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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 ListOfGriCommands.html#ListOfGriCommands Gri: `convert' command Gri: `debug' command index.html#Top Gri: `debug' command

9.3.5: The `create' commands

9.3.5.1: `create columns from function'


`create columns from function'

Plot a function of x which is defined in synonym \function.


ENVIRONMENT
\function = function to plot.
\xmin     = minimum x value
\xmax     = maximum x value
\xinc     = increment in x values
     
EXAMPLE
\function = "cos(x)"
\xmin     = "0"
\xmax     = "2 * 3.14"
\xinc     = "0.1"
create columns from function
draw curve

NOTE: This only works on machines which have the `awk' command available at the commandline. This means most unix machines and some vax machines.

9.3.5.2: `create image grayscale'


`create image grayscale banded .band.'

Make a banded grayscale with in units of .band. pixel values each. Thus, pixel values 0 to (.band. - 1) on the image will map to 0, while values from .band. to (2 * .band. - 1) will map to .band., etc. For example, .band. = 2 gives grayscale = (0 0 2 2 4 4 6 6 ... 252 252 254 254).

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