So here is an idea for a lightweight GRASS CLI to run from a system
terminal
1) a Python script that will set the display variables and launch an
image viewer with autorefresh as Glynn has mentioned. It would use the
Python "input" function to allow for the user to type multiple d.rast
and d.vect commands.
2) a script named g.zoom. This script runs g.region and will reset the
computational (and display) region by a positive or negative
percentage around the center point or optionally around a point whose
coordinates the user inputs
3) a script named g.pan. This script runs g.region to shift the
computational (and display) region by a percent or by a unit value in
some cardinal direction
Michael
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