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 | ## 9.3: List of all Gri commands Commands are listed below in the order in which they are defined in the ``gri.cmd`' file (see Invoking Gri). What you see here is similar to, but not identical to, the text of the online help. Gri usually accepts both American and English spellings (As an example of spelling latitude, Gri accepts ``grey`' anywhere the manual says ``gray`', and ``colour`' for ``color`'.) Assert: Assert something to be true (for debugging) Cd: Change directory Close: Close a file Convert: Convert various data types Create: Create columns from specified function Debug: Set to debugging mode Delete: Delete various data structures Differentiate: Differentiate things Draw: Draw various things End Group: End a group Expecting: Make Gri warn of incompatibilites Filter: Filter (smooth) various data structures Flip: Flip or transpose grid or image Get Env: Get a unix environment variable Group: Start a group of drawn objects Heal: Interpolate across missing values Help: Give on-line help If: If and if/else statements Ignore: Ignore some of data recently read in Input: Input PostScript file into output file Insert: Run another command file Interpolate: Interpolate grid data to new x/y grid List: List source of a gri command Ls: List files in current directory Mask: Mask the image New: Get space for new variable or synonym Newpage: Start a new page New Postscript File: Start a new PostScript file Open: Open a data file Postscript: Insert a line into the PostScript file Pwd: Print working directory Query: Get user input Quit: Exit from gri Read: Read something Regress: Do linear regressions on columnar data Reorder: Reorder columns Rescale: Re-determine scales for x/y axes Resize: Resize plot width/height for maps Return: Return early from command or insert file Rewind: Rewind data file to beginning Rpnfunction: Define an rpn function Set: Set various preference flags, etc Show: Show values of various things Skip: Skip some lines in data file Sleep: Sleep for a while Smooth: Smooth data Source: Run another command file Sprintf: Print variable values into a synonym State: Save or restore the graphics state Superuser: Enable some programmers debugging commands System: Performing system commands within gri Unlink: Delete file While: Loop over some code while a condition is true Write: Write data to a file