| # GRASS Help System

## MACRO DEVELOPMENT

GRASS has often been referred to as a "tool chest" of commands. In this scenario, the user supplies the data and the notion of which functions to perform (i.e., a model), while GRASS supplies the commands (functions) necessary to run the model.

Programming Tools

The GRASS commands listed below are actually UNIX shell scripts running a series of GRASS commands. They exist both to perform a specific function and to exhibit how such macros can be constructed. All (but r.average) are stored under the directory "$GISBASE/scripts". User sites are encouraged to examine these shell scripts and to develop their own macros based on these examples.

- 3d.view.sh - shade.rel.sh
- blend.sh - show.color.sh
- bug.report.sh - show.fonts.sh
- dcorrelate.sh - slide.show.sh
- grass.logo.sh - split.sh
- hsv.rgb.sh - start.man.sh
- old.cmd.sh - Gen.Maps
- r.average - Gen.tractmap
- rgb.hsv.sh

For more information on a specific command, select a command and press ESC.

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Automatically created on: Sat Oct 15 07:07:27 2005