| Re: undefined keyword variables [message #17671 is a reply to message #17531] |
Wed, 03 November 1999 00:00  |
m218003
Messages: 56
Registered: August 1999
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Member |
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In article <MPG.1287a145f4a5803998992d@news.frii.com>,
davidf@dfanning.com (David Fanning) writes:
>
> I think it is not only feasible, but required, that you
> provide default values for *any* variable you plan
> to use in the code. Certainly if I were planning to
> use the POSITION keyword I would have something like this:
>
> IF N_Elements(thePosition) EQ 0 THEN thePosition=!P.Position
> ...
> Plot, data, Position=thePosition
>
Hi David,
here is one for you. I just checked out the code for MAP_SET, and
here's what I found:
if keyword_set(position) then $
...
Seems like you should give one of your famous courses over there ;-)
Cheers,
Martin
--
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