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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
 		index.html#Top Environment.html#Environment Gri: extra programs that work with Gri Gri: Using System Tools With Gri index.html#Top Gri: Using System Tools With Gri

11.1: Extra things provided with Gri

11.1.1: `gri_merge' -- combine PostScript files

Merge separate PostScript files, created by Gri, into one page. To learn how it works, type `gri_merge -h' at the system prompt, to see: 


PURPOSE: Strings Gri PostScript files together.


BUGS:    With old versions, of gri, make sure to match each `set clip
 postscript on' with a `set clip postscript off'.


USAGE (style 1):
    gri_merge [OPTIONS] CxR a.ps b.ps ... > merged_file.ps
 Merges the files onto one page, in 'C' columns and 'R' rows.  The C*R
 files are given in the order of words on a page.  The page is
 presumed to be 8.5x11 in size, as are all the input files, and the
 input files are sized to fit, and kept in natural scale.


USAGE (style 2):
    gri_merge [OPTIONS] xcm ycm enlarge a.ps [b.ps ...] > merged_file.ps
 Where `enlarge' is a scale factor applied after offsetting `xcm' to
 the right and `ycm' upward.


EXAMPLE (style 2):
 The following
   gri_merge  2 12 .5 a.ps \
            12 12 .5 b.ps \
             2  2 .5 c.ps \
            12  2 .5 d.ps > all.ps
 produces 4 panels from gri plots done using margins and sizes
 as specified in the following lines in a gri commandfile
   set x margin 2
   set x size 15
   set y margin 2
   set y size 15
 The OPTIONS, available if your 'perl' has 'getopts' library, are:
   -u graylevel -- set graylevel for underlay beneath panels, by default 0.75.
                   Values range from 0 (black) to 1 (white), although a value
                   of precisely 1 means do NOT draw underlay.
   -b graylevel -- Set value for background under individual panels, again 0 
                   for black to 1 for white, with 1 meaning no drawing.
   -h           -- Print this help message and quit.

11.1.2: `gri_unpage' -- split pages into files

Given a multipage PostScript file, `gri_unpage' creates several new PostScript files, one for each page. To learn how it works, type `gri_unpage -h' at the system prompt, to see: 


PURPOSE: Chop multipage Gri PostScript file into one file per page.
USAGE:   gri_unpage name.ps -- create files name-1.ps, name-2.ps, etc, one
                               for each page of name.ps.
         gri_unpage -h      -- print this help message


BUGS:    1. Bounding box is always 8.5x11 inches.
         2. Assumes that all Gri fonts are used even if they aren't.

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