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Re: two surfaces on same plot? [message #13191]

Mon, 26 October 1998 00:00

Struan Gray
Messages: 178
Registered: December 1995

Senior Member

Paul Woodford, woodford@essexcorp.com writes:

> I am reading Struan Gray's tutorial

I liked this bit so much I thought I'd leave it in :-)

> Is it not possible to plot them both unless
> you are using the z buffer?

You need the z-buffer to work out which parts of the first surface
are behind the second and vice versa. If you want the surfaces to
intersect properly then in IDL 4.x you have to use the z-buffer and
then copy the final image to the screen device. In IDL 5.x you can
use object graphics where the z-buffer is built in and you don't have
to manipulate it explicitly.

Struan

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Re: two surfaces on same plot?

By: Struan Gray on Mon, 26 October 1998 00:00

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