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Topic: Questions on displaying plots overlaid on an image
Replies: 1   Last Post: Mar 5, 1997 2:54 PM

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Nandita Mukhopadhyay

Posts: 16
Registered: 12/7/04
Questions on displaying plots overlaid on an image
Posted: Mar 5, 1997 7:54 AM
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Hi everybody,

Here is what I am trying to do: I have an image (which is usually
of one colour e.g shades of red), and I also have plots that I am
displaying on top of the image. Everytime I redraw the plots, the
image also gets redisplayed, which is extremely annoying since it
takes a while.

To avoid redisplaying the image, I tried using various erasemodes for
the plots, and here are the results:

1) Using erasemode 'xor': the plots are always BLACK, no matter what
colour I try to set them to.

2) Using erasemode 'background': whenever I try to display a smaller
area of the image by changing the axis, using axis([...]), the plots
are also drawn outside the axis area.

Can anyone suggest a way to display plots in any colour I want,
without redisplaying the image, while confining the plots to inside
the axis?

I would greatly appreciate any help.



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