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Re: Over-plotting problem... [message #9308]

Wed, 25 June 1997 00:00

Mike Schienle
Messages: 37
Registered: May 1997

Member

Gregory Grason wrote:
>
> Specifically what is a user symbol and why would I need one to
> over-plot? I've never encountered this error before:
>
> % OPLOT: No user symbol defined.

If you specify PSym=8, !P.PSym=8 (or -8 for either) or use the UserSym
procedure, you have the ability to specify your own symbol as opposed to
a built-in IDL symbol. Some of the IDL symbols are point, plus, X,
square, diamond, etc. If you don't like those, or want, perhaps, a
circle, you would specify a user symbol. The online help for UserSym
contains some info on how to specify and use your own symbols.

--
Mike Schienle Hughes STX - EROS Data Center, Sioux Falls, SD
Work: schienle@edcsgw13.cr.usgs.gov Home: mgs@sd.cybernex.net

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