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Probs w/ keyword_set [message #2511]

Tue, 02 August 1994 13:39

tai
Messages: 14
Registered: June 1994

Junior Member

This is probably old news, but in IDL 3.6 (and I think in 3.51), I
realized early on that you run into problems by setting a keyword
parameter to 0 and running it through keyword_set. I.e. keyword_set
believes the parameter is unset:

pro test, Key = Key
if (keyword_set(Key)) then print, 'Set' $
else print, 'Unset'
end
test, Key = 0

Solution: use n_elements instead of keyword_set. I found this out
from reading through some procedures from the JHUAPL library.

Alan

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