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is_coordsys - Function



Package general
Module images


Is this variable a Coordsys tool ?


Synopsis
is_coordsys(thing)


Arguments

thing in Variable to test
    Allowed: Glish variable
    Default: None



Returns
T or F


Description

Determine if this variable is a Coordsys tool. This is very useful in scripts; for robustness, you check that the tool is a Coordsys tool before you start applying Coordsys tool functions.



Example
cs := coordsys();
is_coordsys(cs)
T
cs2 := 'doggies'
is_coordsys(cs2)
F





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