# Concept index

Chapters: 1: Introduction 2: Simple example 3: Invocation 4: Finer Control 5: X-Y Plots 6: Contour Plots 7: Image Plots 8: Examples 9: Gri Commands 10: Programming 11: Environment 12: Emacs Mode 13: History 14: Installation 15: Gri Bugs 16: Test Suite 17: Gri in Press 18: Acknowledgments 19: License Indices: Concepts Commands Variables | ! rpn operator ... see Unary Operators & rpn operator ... see Binary Operators & syntax, how it is parsed ... see Implementation of Ampersand Syntax * rpn operator ... see Binary Operators + rpn operator ... see Binary Operators - rpn operator ... see Binary Operators -batch command-line option ... see Invoking Gri -chatty command-line option ... see Invoking Gri -creator command-line option ... see Invoking Gri -debug command-line option ... see Invoking Gri -directory command-line option ... see Invoking Gri -directory_default command-line option ... see Invoking Gri -help command-line option ... see Invoking Gri -no_bounding_box command-line option ... see Invoking Gri -no_cmd_in_ps ... see Invoking Gri -no_private command-line option ... see Invoking Gri -no_startup_message command-line option ... see Invoking Gri -no_warn_offpage command-line option ... see Invoking Gri -output PS_file_name commandline option ... see Invoking Gri -output SVG_file_name commandline option ... see Invoking Gri -private command-line option ... see Invoking Gri -publication command-line option ... see Invoking Gri -superuser command-line option ... see Invoking Gri -trace command-line option ... see Invoking Gri -version command-line option ... see Invoking Gri -warn_offpage command-line option ... see Invoking Gri -yes command-line option ... see Invoking Gri / rpn operator ... see Binary Operators < comparison operator in rpn expressions ... see Binary Operators < rpn operator ... see Binary Operators <= rpn operator ... see Binary Operators = rpn operator assigns to variables, synonyms, and columns ... see Binary Operators == comparison operator in rpn expressions ... see Binary Operators > comparison operator in rpn expressions ... see Binary Operators >= rpn operator ... see Binary Operators @ rpn operator, for accessing columnar data ... see Binary Operators [] syntax for optional words in commands ... see Invoking Gri [] syntax for selecting words in synonyms ... see Extracting Words From Strings \$() syntax for system commands ... see Using OS Inside Gri \& and \&& notation ... see Determining Calling Information \.return_value., from read columns ... see Read Columns \.return_value., from read grid ... ... see Read Grid \.return_value., from system ... ... see System \.return_value., general ... see Important Builtin Synonyms \.wd. synonym, storing working directory ... see Important Builtin Synonyms \<<, for newline in show commands ... see Show \>>, for horizontal tab in show commands ... see Show \@alias notation ... see Alias Synonyms \\.path_commands. builtin synonym ... see Invoking Gri \\.path_commands. builtin synonym <1> ... see Set Path To \\.path_data. builtin synonym ... see Set Path To | rpn operator ... see Binary Operators ~/.grirc initialization file ... see Resource File abs rpn operator ... see Unary Operators accented characters in text ... see Non-English Text acknowledgments ... see Acknowledgments acos rpn operator ... see Unary Operators acosh rpn operator ... see Unary Operators adding new commands to Gri ... see Adding New Commands adding new commands, complicated example ... see Complicated New Command age rpn operator ... see Unary Operators Alejandro Lopez-Valencia (contributor) ... see Acknowledgments alias synonyms, checking for existence of ... see Unary Operators alias synonyms, with the \@alias notation ... see Alias Synonyms aligning superscripts and subscripts with \! ... see Mathematical Text American Geophysical Union, recommended font size ... see Set Font Size American Geophysical Union, recommended gray levels ... see Set Graylevel American Geophysical Union, recommended image gray levels ... see Images American Geophysical Union, recommended line thickness ... see Set Line Width and rpn operator ... see Binary Operators Andrew Collier (contributor) ... see Acknowledgments annotating lines ... see Legend arc, drawing ... see Draw Arc area rpn operator ... see Manipulation of Columns etc area under curve ... see Manipulation of Columns etc argc rpn operator, yielding number of commandline arguments ... see Solitary Operators argc, RPN operator to access commandline arguments ... see Invoking Gri arguments on command line, accessing with argv rpn operator ... see Unary Operators arguments on commandline, accessing ... see Invoking Gri arguments to new commands, how to alter ... see Changeable Command Arguments argv rpn operator, access commandline arguments ... see Unary Operators argv, RPN operator to access commandline arguments ... see Invoking Gri arrows ... see Set Arrow Type arrows, drawing single ... see Draw Arrow arrows, how to read direction field ... see Read Columns arrows, setting size of heads ... see Set Arrow Size arrows, size of heads stored in ..arrowsize.. ... see Built-in Variables ascent rpn operator ... see Unary Operators asin rpn operator ... see Unary Operators assert command, for debugging ... see Assert assigning to columns, variables and synonyms within RPN expressions ... see Binary Operators atan rpn operator ... see Unary Operators atan rpn operator <1> ... see Unary Operators atof rpn operator ... see Unary Operators awk system tool ... see Awk awk, sample of use ... see Operating System axes, and mathematical operations on columns ... see Axis Scaling axes, automatic drawing of ... see Grayscale Images axes, autoscaling of ... see Axis Scaling axes, displaying information about ... see Show axes, forcing rescaling ... see Rescale axes, guide to choosing length of ... see Length axes, labels for ... see Labels axes, length of ... see Built-in Variables axes, linear ... see Log And Linear axes, location of ... see Position axes, logarithmic ... see Log And Linear axes, range of values on ... see Range axes, scales ... see Simple Example Revisited axes, setting tic size ... see Set Tic Size axis labels, controlling ... see Set X Axis axis sizes, scaled with golden ratio ... see Length Barnes method for gridding data ... see Ungridded Data batch processing ... see Invoking Gri batch processing <1> ... see Built-in Variables beeping on errors ... see Set Beep beginners, simple example ... see Simple Example BeOS unix compilation ... see Beos-install big-endian vs little-endian data, caution ... see Binary Files big-endian vs little-endian data, plans ... see Plans binary data ... see Binary Files binary operators in rpn expressions ... see Binary Operators bounding box ... see Invoking Gri bounding box <1> ... see Invoking Gri bounding box, setting ... see Set Bounding Box Brian May, contributor ... see Acknowledgments bug, resulting in bus error ... see Reporting Bugs bug, resulting in segmentation fault ... see Reporting Bugs bugs in Gri ... see Known Bugs bugs, how to kill them ... see Killing Bugs bugs, how to report ... see Reporting Bugs built-in synonyms, global ... see Important Builtin Synonyms built-in synonyms, local ... see Local Synonyms built-in variables ... see Built-in Variables builtin colors, list of ... see Pen Color builtin synonym \\.path_commands. ... see Invoking Gri builtin synonym \\.path_commands. <1> ... see Set Path To builtin synonym \\.path_data. ... see Set Path To bus error, what to do ... see Reporting Bugs calling OS from within strings ... see Using OS Inside Gri Carl Osterwisch (contributor) ... see Acknowledgments cd command ... see Cd ceil rpn operator ... see Unary Operators changeable arguments, using delete on ... see Using New And Delete changeable arguments, using new on ... see Using New And Delete changes to Gri, protection against ... see Expecting changing directories ... see Cd character variables (synonyms) ... see Synonyms character variables (synonyms) <1> ... see Using Synonyms checking for missing value in rpn expressions ... see Unary Operators Christopher Illies (contributor) ... see Acknowledgments circles, drawing ... see Draw Circle clipping data using set input clip ... see Set Clip clipping data using set input data window ... see Set Input Data Window close command ... see Close closing files ... see Close Clyde Clements (contributor) ... see Acknowledgments cmtopt rpn operator ... see Unary Operators Cody Kirkpatrick (contributor) ... see Acknowledgments colon on commandline ... see Invoking Gri color, displaying names and RGB values of ... see Show color, for text ... see Set Font Color color, symbols ... see Scattergraphs colors, list of ... see Pen Color colors, reading from X11 database ... see Read Colornames colorscale modification ... see Mathematics colorscale of image, reading from file ... see Read Image Colorscale colorscale, drawing ... see Draw Image Palette colorscale, setting for images ... see Set Image Colorscale colour vs Color spelling ... see List Of Gri Commands column dat, assigning within RPN expressions ... see Binary Operators column data, accessing individual values and stats ... see Manipulation of Columns etc column data, statistics ... see Manipulation of Columns etc column data, writing to a file ... see Write Columns column data, x in one file and y in another ... see Read Columns column mathematics ... see Mathematics column, displaying statistics of ... see Show columns, assigning within RPN expressions ... see Binary Operators columns, creating from grid ... see Convert Grid To Columns columns, filtering ... see Filter columns, filtering <1> ... see Smooth columns, reordering ... see Reorder comma-separated values ... see Opening Pipes command arguments, how to alter ... see Changeable Command Arguments command files ... see Invoking Gri command files, path to search for ... see Set Path To command lines, parsing in new Gri commands ... see Local Synonyms command-line interface ... see Plans command-line option -creator ... see Invoking Gri command-line option -warn_offpage ... see Invoking Gri command-line options ... see Invoking Gri command-line, specifying command file ... see Invoking Gri CommandFile command-line option ... see Invoking Gri commandfile, pathname ... see Using OS Inside Gri commandline arguments, accessing ... see Invoking Gri commandline arguments, accessing with argv rpn operator ... see Unary Operators commandline flag colon ... see Invoking Gri commandline option -output PS_file_name ... see Invoking Gri commandline option -output SVG_file_name ... see Invoking Gri commands extending over several lines ... see Long Command Lines commands, complete list of ... see List Of Gri Commands commands, how to add new ones to Gri ... see Adding New Commands comments, # style ... see Linegraphs comments, and system commands ... see System comparison operators in rpn expressions ... see Binary Operators compilation in Macintosh OS X ... see Mac-install compilation under BeOS ... see Beos-install compilation under Linux ... see Msdos-install compilation under MSDOS ... see Msdos-install compilation under OS/2 ... see OS2-install compiling gri ... see Uncompiled Unix compressed files, opening ... see Ascii Files computational cost, of convert columns to grid command ... see Convert Columns To Grid configure script, how to use to compile gri ... see Uncompiled Unix continued lines ... see Long Command Lines contour data, writing to a file ... see Write Contour contouring ... see Draw Contour contouring, clipping out invalid areas ... see Set Grid Missing contouring, interpolating to new grid ... see Interpolate contours ... see Contour Plots contours on images ... see Combination contours, orientation of labels ... see Set Contour Labels contours, pre-gridded data ... see Pre-gridded Data contours, smoothing grid data ... see Smooth contours, spacing of labels on ... see Set Contour Label Position contours, ungridded data ... see Ungridded Data contours, whiting/nowhiting under the labels ... see Set Contour Labels contributor and bug-fixer, Wolfgang Voegeli ... see Acknowledgments contributor, Alejandro Lopez-Valencia ... see Acknowledgments contributor, Andrew Collier ... see Acknowledgments contributor, Brian May ... see Acknowledgments contributor, Carl Osterwisch ... see Acknowledgments contributor, Christopher Illies ... see Acknowledgments contributor, Clyde Clements ... see Acknowledgments contributor, Cody Kirkpatrick ... see Acknowledgments contributor, Dave Brickman ... see Acknowledgments contributor, Dave Hebert ... see Acknowledgments contributor, David A. Holland ... see Acknowledgments contributor, David Trueman ... see Acknowledgments contributor, Ed Nather ... see Acknowledgments contributor, George White ... see Acknowledgments contributor, Ivo Alxneit ... see Acknowledgments contributor, Jeff Whitaker ... see Acknowledgments contributor, Jinyu Sheng ... see Acknowledgments contributor, Karin Bryan ... see Acknowledgments contributor, Kawamura Masao ... see Acknowledgments contributor, Keith Thompson ... see Acknowledgments contributor, Luke Blaikie ... see Acknowledgments contributor, Peter Galbraith ... see Acknowledgments contributor, Pierre Flament ... see Acknowledgments contributor, Richard Andrew Miles Outerbridge ... see Acknowledgments contributor, Roman Neuhauser ... see Acknowledgments contributor, Sara Bennett ... see Acknowledgments contributor, Steve Cayford ... see Acknowledgments contributor, Steve Matheson ... see Acknowledgments contributor, Thomas Larsen ... see Acknowledgments contributor, Tim Powers ... see Acknowledgments contributor, Toru Suzuki ... see Acknowledgments conversion between user and page units ... see Binary Operators conversion, hour-minute-second to decimal hour ... see Opening Pipes conversion, string to number, in rpn expressions ... see Unary Operators convert columns to grid command ... see Convert Columns To Grid convert columns to spline command ... see Convert Columns To Spline convert grid to columns command ... see Convert Grid To Columns convert grid to image command ... see Convert Grid To Image convert image to grid command ... see Convert Image To Grid converting decimal values to hexadecimal strings ... see Unary Operators converting grids to images ... see Reading and Creating Image Data converting hexadecimal strings to decimal values ... see Unary Operators cookbook ... see Examples cos rpn operator ... see Unary Operators cosh rpn operator ... see Unary Operators create columns from function command ... see Create Columns From Function csv data ... see Opening Pipes curves, drawing ... see Draw Curve darwinport ... see Mac-install dashed lines ... see Set Dash data files, opening ... see Open data files, path to search for ... see Set Path To data files, positioning within ... see Skip data files, protecting against movement of ... see Length data files, words in lines ... see Built-in Variables data format ... see Linegraphs data in columns, writing to a file ... see Write Columns data in contours, writing to a file ... see Write Contour data in grid, writing to a file ... see Write Grid data in image, writing to a file ... see Write Image data, clipping using set input clip ... see Set Clip data, clipping using set input data window ... see Set Input Data Window data, comma-separated values ... see Opening Pipes data, csv ... see Opening Pipes data, dealing with odd datasets ... see Handling Data data, from a spreadsheet ... see Opening Pipes data, images ... see Reading and Creating Image Data data, missing values ... see Missing Values data, spreadsheet ... see Opening Pipes data, stored in comma-separated values ... see Opening Pipes date ... see Important Builtin Synonyms Dave Brickman (contributor) ... see Acknowledgments Dave Hebert (contributor) ... see Acknowledgments David A Holland (contributor) ... see Acknowledgments David Trueman (contributor) ... see Acknowledgments day-of-week axis ... see Set X Axis debian ... see Linux debug command ... see Debug debug command-line option ... see Built-in Variables debugger used with Gri ... see Reporting Bugs debugging ... see Debug debugging Gri programs ... see Debugging debugging using superuser flags ... see Superuser debugging, using ..debug.. ... see Built-in Variables debugging, with assert command ... see Assert default values ... see Defaults defining rpn functions ... see Rpnfunction delete command ... see Delete delete, used on changeable arguments ... see Using New And Delete deleting variables, synonyms, scales, etc ... see Delete deprecated commands ... see Deprecated Commands descent rpn operator ... see Unary Operators developer command set environment ... see Set Environment developer command set flag ... see Set Flag differentiate command ... see Differentiate differentiation ... see Differentiate direction field, how to read ... see Read Columns directories, changing ... see Cd directory listing ... see Ls directory structure of Gri installation ... see Unix-install directory, how to find out ... see Pwd directory, stored in synonym \.wd. ... see Important Builtin Synonyms directory_exists rpn operator ... see Unary Operators discussion Group ... see Discussion Group dollar-parenthesis syntax for system commands ... see Using OS Inside Gri draw arrows command ... see Draw Arrows draw axes command ... see Draw Axes draw axes if needed command ... see Draw Axes If Needed draw border box command ... see Draw Border Box draw box command ... see Draw Box draw circle command ... see Draw Circle draw contour command ... see Draw Contour draw curve command ... see Draw Curve draw essay command ... see Draw Essay draw gri logo command ... see Draw Gri Logo draw grid comman ... see Draw Grid draw image comman ... see Draw Image draw image histogram command ... see Draw Image Histogram draw image palette comman ... see Draw Image Palette draw isopycnal command ... see Draw Isopycnal draw isospice command ... see Draw Isospice draw label boxed command ... see Draw Label Boxed draw label command ... see Draw Label draw label for last curve command ... see Draw Label For Last Curve draw label whiteunder command ... see Draw Label Whiteunder draw line command ... see Draw Line From draw line legend command ... see Draw Line Legend draw lines command ... see Draw Lines draw patches command ... see Draw Patches draw polygon command ... see Draw Polygon draw regression line command ... see Draw Regression Line draw symbol at command ... see Draw Symbol At draw symbol command ... see Draw Symbol draw symbol legend command ... see Draw Symbol Legend draw time stamp command ... see Draw Time Stamp draw title command ... see Draw Title draw values command ... see Draw Values draw x axis command ... see Draw X Axis draw x box plot command ... see Draw X Box Plot draw y axis command ... see Draw Y Axis draw y box plot command ... see Draw Y Box Plot draw zero line command ... see Draw Zero Line drawing arcs ... see Draw Arc drawing contours ... see Draw Contour drawing contours of pregridded data ... see Pre-gridded Data drawing contours of ungridded data ... see Ungridded Data drawing curves ... see Draw Curve drawing data lines ... see Linegraphs drawing image plots ... see Example Image drawing labels ... see Draw Label Boxed drawing labels for data curves ... see rpn Examples drawing labels on xy curves ... see Draw Label For Last Curve drawing legends ... see Legend drawing linegraphs ... see Linegraphs drawing patches ... see Draw Patches drawing polygons ... see Draw Polygon drawing satellite images ... see Example Image drawing single symbols ... see Draw Symbol At drawing text strings ... see Draw Label Boxed drawing titles ... see Linegraphs drawing x-y graphs, simple ... see Simple Example dup rpn operator ... see Unary Operators dup rpn stack operator ... see Stack Operators e, base of natural logarithms, in RPN expressions ... see Solitary Operators Ed Nather (contributor) ... see Acknowledgments editing Gri code with Emacs ... see Emacs Mode electric fence, for debugging ... see Debugging at a Glance emacs, editing mode for Gri ... see Emacs Mode email list ... see Discussion Group end group command ... see End Group endian file compatibility, caution ... see Binary Files endian file compatibility, plans ... see Plans environment variables ... see Get Env eof on files ... see Set Ignore Error Eof error messages ... see Error Messages errors, beeping ... see Set Beep example 01, linegraph using data in a separate file ... see Simple Example example 01, linegraph using data in a separate file <1> ... see Simple Example example 01, linegraph using data in a separate file <2> ... see Linegraphs example 03 (controlling scales, etc) ... see Simple Example Revisited example 03, controlling scales, etc ... see Simple Example Revisited example 04 (contouring pregridded data) ... see Pre-gridded Data example 05 - Contouring ungridded data, from figure ... see Ungridded Data example 06, plot IR image of Gulf of Maine ... see Example Image example 07, box plots of mixing efficiency vs density ratio (meddy) ... see Box Plots example 08, plot T=T(x,rho) section of eubex data ... see Contouring example 09, plot dTdrho-rho section ... see Grayscale Images example 10 (image plot with contours) ... see Combination example 10, draw image plot of flushing of dye out of cove ... see Combination example 11, fancy plot ... see Fancy example 12, linegraph with key inside plot ... see Legend example 13, TS diagram, with isopycnals ... see TS Diagram examples of rpn mathematics ... see rpn Mathematics exch rpn operator ... see Binary Operators exch rpn stack operator ... see Stack Operators existence of a synonym, testing ... see Unary Operators existence of a variable, testing ... see Unary Operators existence of an alias synonym, testing ... see Unary Operators exp rpn operator ... see Unary Operators exp10 rpn operator ... see Unary Operators expecting command ... see Expecting exponentiation ... see Mathematics extending Gri by adding new commands ... see Adding New Commands extending Gri by adding new commands, complicated example ... see Complicated New Command fancy plot ... see Fancy FEM mesh plot ... see Finite Element Model Mesh file age, determined with the age rpn operator ... see Unary Operators file permissions, testing with file_exists and directory_exists ... see Unary Operators file, saving results into ... see Write file, selecting between open files ... see Read From file, temporary ... see Using OS Inside Gri filename, temporary ... see Using OS Inside Gri filenames, constructing using the operating system ... see Using Synonyms files, closing ... see Close files, Command-file ... see Invoking Gri files, listing ... see Ls files, positioning within ... see Skip files, testing for eof ... see Set Ignore Error Eof files, ~/.grirc initialization file ... see Resource File file_exists rpn operator ... see Unary Operators filled regions ... see Draw Curve filter command ... see Filter filtering column data ... see Filter filtering image data ... see Filter Finite Element Model mesh ... see Finite Element Model Mesh fink ... see Mac-install first-time usage ... see Simple Example flip command ... see Flip flipping grids and images ... see Flip floor rpn operator ... see Unary Operators font encoding ... see Set Font Encoding font size ... see Set Font Size font, selecting ... see Simple Example Revisited font, setting color of ... see Set Font Color font, setting encoding vector of ... see Set Font Encoding font, size ... see Built-in Variables format for columnar data ... see Linegraphs format, for sprintf command ... see Sprintf formulae, how to plot ... see Formula Plots French accents in text ... see Non-English Text FTP site, cookbook ... see Introduction functions in rpn expressions ... see Rpnfunction functions, how to plot ... see Formula Plots gawk system tool ... see Awk gawk, sample of use ... see System gawk, using to convert files from HMS to decimal ... see Opening Pipes geography, converting hour-minute-second to decimal hour ... see Opening Pipes George White (contributor) ... see Acknowledgments get env command ... see Get Env global built-in synonyms ... see Important Builtin Synonyms global synonyms ... see Important Builtin Synonyms golden ratio, used for axes sizes ... see Length graphics state, saving and restoring ... see State gray level ... see Built-in Variables gray level, example for polygons ... see Polygons gray vs Grey spelling ... see List Of Gri Commands graylevel for lines, example ... see Fancy graylevel, command ... see Set Graylevel graylevel, explanation ... see Pen Color grayscale modification ... see Mathematics grayscale of image, reading from file ... see Read Image Grayscale grayscale, setting for images ... see Set Image Grayscale greek Letters ... see Mathematical Text grep system tool ... see Grep grey vs Gray spelling ... see List Of Gri Commands gri code, editing ... see Emacs Mode gri commands, categories of ... see Overview Of Gri Commands gri commands, complete list of ... see List Of Gri Commands Gri newsgroup ... see Introduction gri version ... see Introduction gri-mode, command name abbreviation ... see Command abbreviations gri-mode, Configuring gri-mode to where gri lives on your system ... see Step 2 gri-mode, editing gri syntax ... see Editing the syntax gri-mode, editing in emacs ... see Emacs Mode gri-mode, enter chunks of code with short-cuts ... see Gri code fragments gri-mode, Extra user configuration of gri-mode ... see Step 4 gri-mode, gri code fragments ... see Gri code fragments gri-mode, gri command names ... see Gri command names gri-mode, handling argv and argc ... see Filename arguments when running gri gri-mode, handling filename command arguments ... see Filename arguments when running gri gri-mode, handling multiple Gri versions ... see Dealing with many Gri versions gri-mode, how it names gri commands ... see Gri command names gri-mode, imenu support ... see Other features gri-mode, Info interface ... see Info interface gri-mode, installing ... see Installing gri-mode.el gri-mode, major commands ... see Major Gri-mode commands gri-mode, Placing gri-mode.el where Emacs can find it. ... see Step 1 gri-mode, possible completions ... see Possible completions gri-mode, screenshots ... see Gri-mode screenshots gri-mode, sysnonym completion ... see Variable completion gri-mode, Telling emacs to load gri-mode ... see Step 3 gri-mode, toolbar ... see Other features gri-mode, user-defined commands ... see User commands gri-mode, variable completion ... see Variable completion gri.cmd, how it is located ... see Invoking Gri grid data - accessing individual values and stats ... see Manipulation of Columns etc grid data - minimum, maximum, mean ... see Manipulation of Columns etc grid data mathematical operations ... see Mathematics grid data, determining geometry from file ... see Pre-gridded Data grid data, displaying ... see Show grid data, smoothing ... see Smooth grid data, write to file ... see Write Grid grid data, writing to a file ... see Write Grid grid mask, displaying ... see Show grid, converting to image ... see Reading and Creating Image Data grid, creating from image ... see Convert Image To Grid grid, deleting ... see Delete grid, flipping ... see Flip grid, interpolating from one to another ... see Interpolate grid, interpolating to given (x,y) value ... see Manipulation of Columns etc grid, missing values ... see Set Grid Missing grid, reading ... see Read Grid gridding data, advice on methods ... see Ungridded Data gri_merge ... see gri_merge gri_unpage ... see gri_unpage group command ... see Group gzipped files, opening ... see Ascii Files Handling errors with set error command ... see Set Error Action handling multiple gri versions ... see Uncompiled Unix hat, drawing hat on top of character ... see Mathematical Text header lines, reading information from ... see Handling Headers header lines, skipping ... see Handling Headers heal command ... see Heal help command ... see Help help, online ... see Online Help hexadecimal, converting to decimal ... see Unary Operators hexadecimal, converting to from decimal ... see Unary Operators hint, color palette range ... see Pen Color hint, contour lines on image palette ... see Draw Image Palette hint, first-time usage ... see Simple Example hint, palette range ... see Draw Image Palette hint, using query to interact with user ... see Hints hints ... see Hints histogram enhancement of image plots ... see Example Image hms format ... see Opening Pipes hour, minute, second data ... see Opening Pipes how to compile gri ... see Uncompiled Unix HP calculators, RPN notation different from ... see Binary Operators HP calculators, RPN notation different from <1> ... see Binary Operators if command ... see If if statements ... see If if statements <1> ... see If Statements ignore command ... see Ignore image colorscale, reading ... see Read Image Colorscale image data, determining geometry from file ... see Pre-gridded Data image data, write to file ... see Write Image image data, writing to a file ... see Write Image image formats, other than 8-bit ... see Plans image grayscale, reading ... see Read Image Grayscale image grayscale/colorscale modification ... see Mathematics image mask data, write to file ... see Write Image image mask, reading ... see Read Image Mask image mathematical operations ... see Mathematics image palette data, write to file ... see Write Image image plot, with contours ... see Combination image plots, general ... see Images image plots, setting colorscale ... see Set Image Colorscale image plots, setting grayscale ... see Set Image Grayscale image, banded ... see Create Image Grayscale image, creating from grid ... see Convert Grid To Image image, data format ... see Reading and Creating Image Data image, displaying histogram of ... see Show image, drawing colorscale palette ... see Draw Image Palette image, drawing palette ... see Draw Image Palette image, flipping ... see Flip image, histogra ... see Draw Image Histogram image, interpolation from grid ... see Convert Grid To Image image, masking ... see Mask image, PostScript output ... see Image PostScript Output images, filtering ... see Filter images, histogram scaling ... see Example Image images, linear scaling ... see Example Image images, reading ... see Read Image incompatibilities, keeping track of ... see Expecting inf rpn operator ... see Binary Operators inf rpn operator, finds smaller of pair ... see Binary Operators initialization commands ... see Resource File input command ... see Input input data window ... see Set Input Data Window insert command ... see Insert installation, debian linux ... see Linux installation, linux redhat/debian ... see Linux installation, redhat linux ... see Linux interaction with user, -y command-line option ... see Invoking Gri interaction with user, query command ... see Query interaction with user, query command <1> ... see User Variables interaction with user, query command <2> ... see Storing User Responses interaction with user, query command <3> ... see If Statements interaction with user, query command <4> ... see Embedded Synonyms interpolate command ... see Interpolate interpolating grid to given (x,y) value ... see Manipulation of Columns etc interpolation, from grid to image ... see Convert Grid To Image ismissing rpn operator ... see Unary Operators ISO latin 1 font encoding ... see Set Font Encoding iso-latin-1 font encoding ... see Non-English Text isopycnals ... see TS Diagram isopycnals <1> ... see Draw Isopycnal Ivo Alxneit (contributor) ... see Acknowledgments Jeff Whitaker (contributor) ... see Acknowledgments Jinyu Sheng (contributor) ... see Acknowledgments Karin Bryan (contributor) ... see Acknowledgments Kawamura Masao (contributor) ... see Acknowledgments Keith Thompson (contributor) ... see Acknowledgments keywords of Gri commands ... see Commands kurtosis, calculating for column data ... see Manipulation of Columns etc labels on contour lines, controlling orientation and white-under ... see Set Contour Labels labels, drawing text anywhere ... see Draw Label Boxed labels, example ... see Fancy labels, for xy curves ... see Draw Label For Last Curve labels, on axes ... see Labels labels, on axes <1> ... see If Statements labels, on contours ... see Set Contour Label Position labels, on data curves ... see rpn Examples landscape orientation of page ... see Set Page larger of two numbers, rpn operator sup ... see Binary Operators latex overline command, emulating ... see Mathematical Text legend for symbol ... see Scattergraphs legends ... see Legend length of axes ... see Built-in Variables length of axes, guide on choosing ... see Length license ... see License line cap ... see Set Line Cap line join ... see Set Line Join line width ... see Set Line Width linear axes ... see Log And Linear linear interpolation ... see Rpnfunction linear regression ... see Regress linear_intercept rpn operator ... see Rpnfunction linear_slope rpn operator ... see Rpnfunction linegraphs ... see Linegraphs lines in data files, parsing ... see Read Line lines, dashed ... see Set Dash lines, gray, command ... see Set Graylevel lines, gray, explanation ... see Pen Color linux compilation ... see Msdos-install LINUX compilation ... see Msdos-install linux distributions ... see Linux list command ... see List little-endian vs big-endian data, caution ... see Binary Files little-endian vs big-endian data, plans ... see Plans ln rpn operator ... see Unary Operators local built-in synonyms ... see Local Synonyms local synonyms ... see Local Synonyms log rpn operator ... see Unary Operators logarithmic axes ... see Log And Linear logarithms ... see Mathematics logical negation, ! rpn operator ... see Unary Operators logical negation, not rpn operator ... see Unary Operators logical operators in rpn expressions ... see Binary Operators logo, how to draw ... see Draw Gri Logo loops ... see While ls command ... see Ls Luke Blaikie (contributor) ... see Acknowledgments macintosh unix compilation ... see Mac-install makefiles, emulating action with the age rpn operator ... see Unary Operators mapping page location units to user units ... see rpn Examples maps, converting hour-minute-second to decimal hour ... see Opening Pipes maps, format of x axis ... see Set X Type maps, format of y axis ... see Set Y Type maps, scales ... see Resize maps, scaling ... see Length margins ... see Built-in Variables mask command ... see Mask mask for image, reading ... see Read Image Mask masking image ... see Mask math on columns, rescaling after ... see Rescale mathematical operators in rpn expressions ... see Binary Operators mathematical Symbols ... see Mathematical Text mathematics, on columns ... see Mathematics mathematics, on grid data ... see Mathematics mathematics, on image grayscale/colorscale ... see Mathematics mathematics, on images ... see Mathematics mathematics, on variables ... see Mathematics mathematics, rpn notation, description ... see rpn Mathematics mathematics, rpn notation, example ... see Built-in Variables mathematics, rpn notation, example <1> ... see rpn Examples mathematics, trigonometric operations ... see rpn Examples maximum, column data ... see Manipulation of Columns etc maximum, grid data ... see Manipulation of Columns etc mean, calculating for column data ... see Manipulation of Columns etc mesh plot for FEM ... see Finite Element Model Mesh minimum, column data ... see Manipulation of Columns etc minimum, grid data ... see Manipulation of Columns etc missing value code ... see Missing Values missing value, checking for in rpn expressions ... see Unary Operators missing values ... see Set Missing Value MSDOS compilation ... see Msdos-install Multi-panel plots ... see Set Panel Multi-panel plots <1> ... see Set Panels multiple datasets in one file ... see Linegraphs multiple gri versions ... see Uncompiled Unix multiple panels ... see Simple Example Revisited multiple panels, example ... see Fancy name, of PostScript file ... see Set Postscript Filename naming convention for synonyms ... see Naming Convention NaN for missing value code ... see Missing Values negation, ! rpn operator ... see Unary Operators negation, not rpn operator ... see Unary Operators netcdf data ... see NetCDF Files netCDF files, opening ... see Open netCDF files, reading attributes, units, etc ... see Read Synonym or Variable netCDF files, reading columns ... see Read Columns netCDF files, reading grid data ... see Read Grid new command ... see New new commands, complicated example ... see Complicated New Command new commands, how they are parsed ... see Parsing new commands, how to add to Gri ... see Adding New Commands new commands, simple example ... see Simple New Command new page command ... see Newpage new postscript file command ... see New Postscript File new, used on changeable arguments ... see Using New And Delete newcommand arguments, how to alter ... see Changeable Command Arguments newcommands, determining calling argument level with \&& ... see Determining Calling Information newcommands, determining calling argument names with \& ... see Determining Calling Information newline, in a show command ... see Show newline, in a system command ... see Naming Convention newline, using \<< in show ... see Show newsgroup ... see Introduction non-English language text ... see Non-English Text not rpn operator ... see Unary Operators no_private, command-line flag ... see Invoking Gri numbers, stored in variables ... see Variables numbers, using underscore to separate thousand parts ... see Version 2.8 oceanographic plots ... see TS Diagram oceanographic plots isopycnals on TS diagram ... see Draw Isopycnal oceanographic plots, iso-spice lines on TS diagrams ... see Draw Isospice oceanographic plots, isopycnals on TS diagrams ... see TS Diagram online help ... see Online Help open command ... see Open opening compressed files ... see Ascii Files opening data files ... see Open opening files through pipes ... see Using OS Inside Gri opening gzipped ... see Ascii Files operating system commands, assigned to synonyms ... see System operating system commands, assigned to synonyms <1> ... see Using Synonyms operating system commands, assigned to synonyms <2> ... see Operating System operating system commands, printing results of ... see System operating system commands, printing results of <1> ... see Operating System operating system, environment variables ... see Get Env operating system, example of using to construct filenames ... see Using Synonyms operating system, filtering datafiles ... see Open operating system, getenv ... see Get Env optional words in commands, [] syntax ... see Invoking Gri options on Gri command-line ... see Invoking Gri or rpn operator ... see Binary Operators orientation of page, landscape ... see Set Page orientation of page, portrait ... see Set Page OS, embedding system output into strings ... see Using OS Inside Gri OS/2 unix compilation ... see OS2-install overbar, drawing line on top of character ... see Mathematical Text overhead projection images, suggested line widths ... see Set Line Width overline, emulating latex command ... see Mathematical Text overview of awk system tool ... see Awk overview of grep system tool ... see Grep overview of gri commands ... see Overview Of Gri Commands overview of perl system tool ... see Perl overview of sed system tool ... see Sed page breaks ... see Newpage page orientation, landscape ... see Set Page page orientation, portrait ... see Set Page page units ... see rpn Examples page units, converting to user units ... see Binary Operators paint regions with color ... see Draw Curve palette for image colorscale, drawing ... see Draw Image Palette parsing headers in data files ... see Read Line parsing of the & syntax ... see Implementation of Ampersand Syntax patches, drawing ... see Draw Patches path, for command files ... see Set Path To path, for data files ... see Set Path To pathname of commandfile ... see Using OS Inside Gri perl system tool ... see Perl perl, use to create probability density function ... see PDF Diagram Peter Galbraith (contributor) ... see Acknowledgments pi, in RPN expressions ... see Solitary Operators Pierre Flament (contributor) ... see Acknowledgments pipes, opening files through them ... see Opening Pipes pipes, opening files through them <1> ... see Using OS Inside Gri plans for future versions ... see Plans polygons, drawing ... see Draw Polygon polygons, filled ... see Polygons pop rpn operator ... see Unary Operators pop rpn stack operator ... see Stack Operators portrait orientation of page ... see Set Page positioning axes ... see Position postscript bounding box ... see Invoking Gri postscript bounding box <1> ... see Invoking Gri postscript command ... see Postscript PostScript file name, specifying ... see Invoking Gri postscript file, write to ... see Postscript postscript filename ... see Set Postscript Filename postscript output, embedded images ... see Image PostScript Output postscript-standard font encoding ... see Set Font Encoding power rpn operator ... see Binary Operators powers, of columns or variables ... see Mathematics private, command-line flag ... see Invoking Gri probability density function diagram ... see PDF Diagram problems and how to cope with them ... see Debugging process, causing Gri to sleep ... see Sleep programming in Gri ... see Programming programming, complete list of Gri commands ... see Commands programming, if statements ... see If Statements programming, parsing command lines ... see Local Synonyms programming, synonyms ... see Synonyms programming, using local built-in synonyms ... see Local Synonyms programming, variables ... see Variables projected images, suggested line widths ... see Set Line Width protecting Gri programs against datafile movement ... see Using OS Inside Gri protection against changes to Gri ... see Expecting pstack rpn stack operator ... see Stack Operators pttocm rpn operator ... see Unary Operators publication quality plots, built-in variable ..publication.. ... see Built-in Variables publication quality, command-line flag ... see Invoking Gri pwd command ... see Pwd query command ... see Query quit command ... see Quit quiting Gri ... see Quit quoting in system commands ... see System rand RPN operator ... see Solitary Operators random numbers, generating in RPN expressions ... see Solitary Operators range of axes ... see Range rapidograph scaling for line width ... see Set Line Width read ... command ... see Read Synonym or Variable read colornames command ... see Read Colornames read columns command ... see Read Columns read command ... see Read Colornames read from command ... see Read From read grid command ... see Read Grid read image colorscale command ... see Read Image Colorscale read image command ... see Read Image read image grayscale command ... see Read Image Grayscale read image greyscale command ... see Read Image Grayscale read image mask command ... see Read Image Mask read line command ... see Read Line read line raw command ... see Read Line reading attributes in NetCDF files ... see Read Synonym or Variable reading columns of data ... see Linegraphs reading data, checks ... see Built-in Variables reading grid data ... see Read Grid reading information from header lines ... see Handling Headers reading synonyms ... see Read Synonym or Variable reading synonyms <1> ... see Read Line reading variables ... see Read Synonym or Variable reading variables <1> ... see Read Line recovering commands from a PostScript file ... see Invoking Gri redhat ... see Linux region painting ... see Draw Curve regress command ... see Regress regression, linear ... see Regress remainder rpn operator ... see Binary Operators removing files with unlink ... see Unlink reorder command ... see Reorder reordering Columns ... see Reorder rescale command ... see Rescale rescaling axes ... see Rescale resize x command ... see Resize resource files ... see Resource File restoring graphics state ... see State return command ... see Return return value, \.return_value. ... see Important Builtin Synonyms rewind command ... see Rewind RGB values of known colors ... see Show Richard Andrew Miles Outerbridge (contributor) ... see Acknowledgments roll_left rpn stack operator ... see Stack Operators roll_right rpn stack operator ... see Stack Operators Roman Neuhauser (contributor) ... see Acknowledgments RPM version of installation package ... see Linux rpn functions ... see Rpnfunction rpn mathematics, examples ... see rpn Mathematics RPN notation, difference from old-series HP calculators ... see Binary Operators RPN notation, difference from old-series HP calculators <1> ... see Binary Operators rpn operator ! ... see Unary Operators rpn operator & ... see Binary Operators rpn operator * ... see Binary Operators rpn operator + ... see Binary Operators rpn operator - ... see Binary Operators rpn operator / ... see Binary Operators rpn operator < ... see Binary Operators rpn operator <= ... see Binary Operators rpn operator = ... see Binary Operators rpn operator == ... see Binary Operators rpn operator > ... see Binary Operators rpn operator >= ... see Binary Operators rpn operator abs ... see Unary Operators rpn operator acos ... see Unary Operators rpn operator acosh ... see Unary Operators rpn operator age ... see Unary Operators rpn operator and ... see Binary Operators rpn operator area ... see Manipulation of Columns etc rpn operator argc, yielding number of commandline arguments ... see Solitary Operators rpn operator ascent ... see Unary Operators rpn operator asin ... see Unary Operators rpn operator atan ... see Unary Operators rpn operator atan <1> ... see Unary Operators rpn operator atof ... see Unary Operators rpn operator ceil ... see Unary Operators rpn operator cmtopt ... see Unary Operators rpn operator cos ... see Unary Operators rpn operator cosh ... see Unary Operators rpn operator descent ... see Unary Operators rpn operator directory_exists ... see Unary Operators rpn operator dup ... see Unary Operators rpn operator exch ... see Binary Operators rpn operator exp ... see Unary Operators rpn operator exp10 ... see Unary Operators rpn operator file_exists ... see Unary Operators rpn operator floor ... see Unary Operators rpn operator inf ... see Binary Operators rpn operator inf, finds smaller of pair ... see Binary Operators rpn operator interpolate ... see Manipulation of Columns etc rpn operator ismissing ... see Unary Operators rpn operator linear_intercept ... see Rpnfunction rpn operator linear_slope ... see Rpnfunction rpn operator ln ... see Unary Operators rpn operator log ... see Unary Operators rpn operator not ... see Unary Operators rpn operator or ... see Binary Operators rpn operator pop ... see Unary Operators rpn operator power ... see Binary Operators rpn operator pttocm ... see Unary Operators RPN operator rand ... see Solitary Operators rpn operator remainder ... see Binary Operators rpn operator sed ... see Binary Operators rpn operator sin ... see Unary Operators rpn operator sinh ... see Unary Operators rpn operator sqrt ... see Unary Operators rpn operator strcat ... see Binary Operators rpn operator strlen ... see Unary Operators RPN operator substr ... see Tertiary Operators rpn operator sup ... see Binary Operators rpn operator sup, finds larger of pair ... see Binary Operators rpn operator system ... see Unary Operators rpn operator tan ... see Unary Operators rpn operator tanh ... see Unary Operators rpn operator width ... see Unary Operators RPN operator wordc ... see Solitary Operators RPN operator wordv ... see Unary Operators rpn operator xcmtouser ... see Unary Operators rpn operator xusertocm ... see Unary Operators rpn operator ycmtouser ... see Unary Operators rpn operator yusertocm ... see Unary Operators rpn operator | ... see Binary Operators rpn stack operator dup ... see Stack Operators rpn stack operator exch ... see Stack Operators rpn stack operator pop ... see Stack Operators rpn stack operator pstack ... see Stack Operators rpn stack operator roll_left ... see Stack Operators rpn stack operator roll_right ... see Stack Operators rpn, conversion of string to number ... see Unary Operators rpn, system calls ... see Unary Operators rpnfunction command ... see Rpnfunction running a commandfile ... see Source Running-Mean Skyline Diagram ... see Running Means Sara Bennett (contributor) ... see Acknowledgments satellite images ... see Example Image save results in a file ... see Write saving graphics state ... see State scalar operations ... see Mathematics scales ... see Simple Example Revisited scales, accessing ... see rpn Examples scales, deleting ... see Delete scaling for maps ... see Length scattergraphs ... see Scattergraphs scientific journals with Gri graphs ... see Gri in the Press screen snapshots, using Gri ... see Gri-mode screenshots sed rpn operator ... see Binary Operators sed system tool ... see Sed segmentation fault, what to do ... see Reporting Bugs set arrow size command ... see Set Arrow Size set arrow type command ... see Set Arrow Type set axes style command ... see Set Axes Style set beep command ... see Set Beep set bounding box command ... see Set Bounding Box set clip command ... see Set Clip set color command ... see Set Color set color name command ... see Set Colorname set colour command ... see Set Color set command ... see Set set contour format command ... see Set Contour Format set contour label for command ... see Set Contour Label For set contour label position command ... see Set Contour Label Position set contour labels command ... see Set Contour Labels set dash command ... see Set Dash set environment command ... see Set Environment set error command ... see Set Error Action set flag command ... see Set Flag set font color command ... see Set Font Color set font colour command ... see Set Font Color set font encoding command ... see Set Font Encoding set font size command ... see Set Font Size set font to command ... see Set Font To set graylevel command ... see Set Graylevel set greylevel command ... see Set Graylevel set grid missing command ... see Set Grid Missing set ignore error eof command ... see Set Ignore Error Eof set ignore initial newline command ... see Set Ignore Initial Newline set image colorscale command ... see Set Image Colorscale set image colourscale command ... see Set Image Colorscale set image grayscale command ... see Set Image Grayscale set image grayscale using histogram command ... see Set Image Grayscale set image greyscale command ... see Set Image Grayscale set image greyscale using histogram command ... see Set Image Grayscale set image missing value color command ... see Set Image Missing Value Color set image missing value colour command ... see Set Image Missing Value Color set image range command ... see Set Image Range set input data separator command ... see Set Input Data Separator set input data window command ... see Set Input Data Window set line cap command ... see Set Line Cap set line join command ... see Set Line Join set line width command ... see Set Line Width set missing value command ... see Set Missing Value set page command ... see Set Page set page size command ... see Set Page Size set panel command ... see Set Panel set panels command ... see Set Panels set path command ... see Set Path To set postscript filename command ... see Set Postscript Filename set symbol size command ... see Set Symbol Size set tic size command ... see Set Tic Size set trace command ... see Set Trace set transparency command ... see Set Transparency set u scale command ... see Set U Scale set v scale command ... see Set V Scale set x axis command ... see Set X Axis set x format command ... see Set X Format set x grid command ... see Set X Grid set x margin command ... see Set X Margin set x name command ... see Set X Name set x size command ... see Set X Size set x type command ... see Set X Type set y axis command ... see Set Y Axis set y format command ... see Set Y Format set y grid command ... see Set Y Grid set y margin command ... see Set Y Margin set y name command ... see Set Y Name set y size command ... see Set Y Size set y type command ... see Set Y Type set z missing command ... see Set Z Missing setting line cap type ... see Set Line Cap setting line join type ... see Set Line Join setting line width ... see Set Line Width setting symbol size ... see Set Symbol Size show command ... see Show show command, how to get a newline ... see Show show command, how to get a tab ... see Show show command, using \<< for newline ... see Show show command, \>> for horizontal tab ... see Show show stopwatch command ... see Show sin rpn operator ... see Unary Operators sinh rpn operator ... see Unary Operators skewness, calculating for column data ... see Manipulation of Columns etc skip command ... see Skip skipping header lines ... see Handling Headers sleep command ... see Sleep sleep, causing Gri to ... see Sleep slides, suggested line widths ... see Set Line Width smaller of two numbers, rpn operator inf ... see Binary Operators smooth command ... see Smooth smooth grid data command ... see Smooth smoothing column data ... see Filter smoothing column data <1> ... see Smooth smoothing grid data ... see Smooth snapshots of computer screen, using Gri ... see Gri-mode screenshots source command, for running another command file ... see Source space in text ... see Mathematical Text specifying the PostScript file name ... see Invoking Gri specifying the SVG file name ... see Invoking Gri spelling of gri commands ... see List Of Gri Commands spice lines, on TS diagram ... see Draw Isospice spline, fitting to (x,y) data ... see Convert Columns To Spline spreadsheet data ... see Opening Pipes sprintf command ... see Sprintf sqrt rpn operator ... see Unary Operators standard deviation, calculating for column data ... see Manipulation of Columns etc standard deviation, column data ... see Manipulation of Columns etc startup commands ... see Resource File startup message ... see Invoking Gri statistics of column data ... see Show statistics, column data ... see Manipulation of Columns etc statistics, performing regression ... see Regress Steve Cayford (contributor) ... see Acknowledgments Steve Matheson (contributor) ... see Acknowledgments stopping Gri ... see Quit stopwatch, for timing things ... see Show strcat rpn operator ... see Binary Operators string, conversion to number in rpn expressions ... see Unary Operators strings, embedding OS output into ... see Using OS Inside Gri strings, storing variable values within ... see Sprintf strlen rpn operator ... see Unary Operators subscripts ... see Mathematical Text substr RPN operator ... see Tertiary Operators substrings, getting with RPN operator substr ... see Tertiary Operators suite of test files ... see Test Suite sup rpn operator ... see Binary Operators sup rpn operator, finds larger of pair ... see Binary Operators superscripts ... see Mathematical Text superscripts and subscripts - how to align using \! ... see Mathematical Text superuser command ... see Superuser superuser flags ... see Superuser SVG file name, specifying ... see Invoking Gri symbol legend ... see Scattergraphs symbol size, stored in ..symbolsize.. ... see Built-in Variables symbols ... see Scattergraphs symbols in color ... see Scattergraphs symbols, drawing single ones ... see Draw Symbol At symbols, setting size ... see Set Symbol Size synonym, and the & syntax ... see Changeable Command Arguments synonyms, aliasing with the \@alias notation ... see Alias Synonyms synonyms, assigning values to ... see Using Synonyms synonyms, assigning within RPN expressions ... see Binary Operators synonyms, built-in, list of ... see Important Builtin Synonyms synonyms, checking for existence of ... see Unary Operators synonyms, constructing using the operating system ... see Using Synonyms synonyms, deleting ... see Delete synonyms, displaying list of ... see Show synonyms, embedding in quoted text strings ... see Embedded Synonyms synonyms, extracting individual words from ... see Using Synonyms synonyms, for storing character strings ... see Synonyms synonyms, for storing output from system commands ... see Using Synonyms synonyms, global ... see Important Builtin Synonyms synonyms, local ... see Local Synonyms synonyms, making local versions ... see New synonyms, multiple copies of ... see New synonyms, naming convention ... see Synonyms synonyms, naming convention <1> ... see Naming Convention synonyms, reading ... see Read Synonym or Variable synonyms, reading <1> ... see Read Line synonyms, storing variable values within ... see Sprintf syntax of Gri commands ... see Commands system calls in rpn expressions ... see Unary Operators system calls, using dollar-parenthesis shell syntax ... see Using OS Inside Gri system command ... see System system command, how to get a newline ... see Naming Convention system command, how to get a tab ... see Naming Convention system commands acting as datafiles ... see Open system commands, assigned to synonyms ... see System system commands, assigned to synonyms <1> ... see Using Synonyms system commands, assigned to synonyms <2> ... see Operating System system commands, example of using to construct filenames ... see Using Synonyms system commands, printing results of ... see System system commands, printing results of <1> ... see Operating System system rpn operator ... see Unary Operators T-S diagram, drawing isopycnals on ... see Draw Isopycnal T-S diagram, drawing spice lines on ... see Draw Isospice T-S diagram, example of drawing ... see TS Diagram tab, in a show command ... see Show tab, in a system command ... see Naming Convention tab, using \>> in show ... see Show tan rpn operator ... see Unary Operators tanh rpn operator ... see Unary Operators temperature-salinity diagram ... see TS Diagram temperature-salinity diagram, drawing isopycnals on ... see Draw Isopycnal temperature-salinity diagram, drawing spice lines on ... see Draw Isospice temporary file allocation ... see Using OS Inside Gri test suite ... see Uncompiled Unix test suite <1> ... see Test Suite testing for end of file ... see Set Ignore Error Eof testing for existence of a synonym ... see Unary Operators testing for existence of a variable ... see Unary Operators testing for existence of an aliased synonym ... see Unary Operators testing for file eof ... see Set Ignore Error Eof text strings, drawing ... see Draw Label Boxed text strings, embedding synonyms within ... see Embedded Synonyms text, color used for ... see Set Font Color text, encoding vector of ... see Set Font Encoding text, Greek letters ... see Mathematical Text text, inserting forward/backward space ... see Mathematical Text text, ISO characters ... see Non-English Text text, mathematical symbols ... see Mathematical Text text, subscripts ... see Mathematical Text text, superscripts ... see Mathematical Text text, thin-spaces within ... see Adjustment Of Character Position the &.variable. notation ... see Changeable Command Arguments the &\synonym notation ... see Changeable Command Arguments thin-space in text ... see Adjustment Of Character Position Thomas Larsen (contributor) ... see Acknowledgments thousand parts, indicating in numbers using underscore ... see Version 2.8 tic size, setting ... see Set Tic Size Tim Powers (contributor) ... see Acknowledgments time ... see Important Builtin Synonyms timing things ... see Show titles, drawing above plot ... see Linegraphs tmpname ... see Using OS Inside Gri Toru Suzuki (contributor) ... see Acknowledgments traceback ... see Show tracing execution, command-line option ... see Invoking Gri tracing execution, using ..trace.. ... see Debugging transforming page location units to user units ... see rpn Examples trigonometric operations in rpn math ... see rpn Examples types of gri commands ... see Overview Of Gri Commands underscore, in numbers ... see Version 2.8 unix environment variables ... see Get Env unix, dollar-parenthesis notation within Gri commands ... see Using OS Inside Gri unlink command ... see Unlink unlink, to remove files ... see Unlink URL, how to open ... see Opening URLs user input to Gri ... see Acknowledgments user interaction, query command ... see Query user units ... see rpn Examples user units, converting to page units ... see Binary Operators user-defined synonyms ... see Using Synonyms user-defined variables ... see User Variables using environment variables for directory names ... see Using OS Inside Gri variables ... see Variables variables, and the & syntax ... see Changeable Command Arguments variables, assigning within RPN expressions ... see Binary Operators variables, built-in ... see Built-in Variables variables, checking for existence of ... see Unary Operators variables, defined by user ... see User Variables variables, deleting ... see Delete variables, displaying list of ... see Show variables, making local versions ... see New variables, multiple copies of ... see New variables, reading ... see Read Synonym or Variable variables, reading <1> ... see Read Line variables, storing values within synonyms (strings) ... see Sprintf vector field, how to read ... see Read Columns version 2.10 ... see Version 2.10 version 2.12 ... see Version 2.12 version numbers ... see Introduction versions, handling multiple ... see Uncompiled Unix while command ... see While width rpn operator ... see Unary Operators Window-pane plots ... see Set Panel Window-pane plots <1> ... see Set Panels Wolfgang Voegeli (contributor and bug fixer) ... see Acknowledgments wordc RPN operator ... see Solitary Operators wordv RPN operator ... see Unary Operators working directory, stored in synonym \.wd. ... see Important Builtin Synonyms write command ... see Write write PostScript commands directly to output file ... see Postscript writing to a file, column data ... see Write Columns writing to a file, contour data ... see Write Contour writing to a file, grid data ... see Write Grid writing to a file, image data ... see Write Image x-y graphs ... see Linegraphs x-y graphs <1> ... see Draw Curve X11 colors, reading ... see Read Colornames xcmtouser rpn operator ... see Unary Operators xusertocm rpn operator ... see Unary Operators ycmtouser rpn operator ... see Unary Operators yusertocm rpn operator ... see Unary Operators