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annotated text without using graphics device in IDL? [message #35061]

Wed, 07 May 2003 10:22

Howard Taylor
Messages: 3
Registered: May 2003

Junior Member

I'd like to annotate an image without having to first draw the text on the
active graphics display and then read the image back. This undesirable
method might look like:

a=indgen(256,256)
tv,a
xyouts,100,100,'this text',/device
b=tvrd()

Instead, I'd like an approach that doesnt rely on the graphics device at
all. It might be called in this way:

a=findgen(256,256)
b = imgtext( a, 100,100,'this text' )

As a result, b is an image whose contents have been altered to include the
text.

Anybody seen this sort of thing for IDL?

Thanks,
Howard

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