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Hello, I cannot find the SIGNUM function, which returns the sign of its input (integer or double, scalar or vector, etc.). At https://comp.lang.idl-pvwave.narkive.com/jEV4l1KY/sign-function-signof-num-or-array-of-num, there are some versions provided, including the (expensive but robust?) following:
SIGNUM
GDL> x = [ -2e4, 5, 0, 1d/0, -1d/0, 0d/0 ] GDL> print, (x GT 0) -1* (x LT 0) -1 1 0 1 -1 0
Apparently, the SIGNUM function was introduced in IDL 8.3 (https://www.nv5geospatialsoftware.com/docs/SIGNUM.html). Maybe it could be a worthwhile addition at some point. Thank you!
IDL 8.3
The text was updated successfully, but these errors were encountered:
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Hello, I cannot find the
SIGNUMfunction, which returns the sign of its input (integer or double, scalar or vector, etc.). At https://comp.lang.idl-pvwave.narkive.com/jEV4l1KY/sign-function-signof-num-or-array-of-num, there are some versions provided, including the (expensive but robust?) following:Apparently, the
SIGNUMfunction was introduced inIDL 8.3(https://www.nv5geospatialsoftware.com/docs/SIGNUM.html). Maybe it could be a worthwhile addition at some point. Thank you!The text was updated successfully, but these errors were encountered: