Scripting in Python and defining options and flags in the header, as
usual using the '#%' markers in the beginning of the line and following
g.parser's manual. What if there is need to override an option if
another one is given?
For example, an option considered as required may be the "mean target
altitude" for i.atcorr's parameter file. What if an elevation map is
given, which renders the previous option not-required?
What is the common practice for this? Define both options as optional
and do the necessary checks inside the script? Or, is there a way to
override options if another option is given in the definition-header?
Thanks, Nikos
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