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Re: Creating a GIF file from a graphics window in IDL

Michael W Asten wrote:
> Liam Gumley wrote:
> > <ykadkh1@uic.edu> wrote in message news:394EA050.1C70A2DB@uic.edu...
> > > I was wondering if anyone knows how to write a GIF or JPEG file in IDL
> > > using the image that appears in a window. Otherwise, it would also be
> > > helpful If there was a way to create an array from the window's
> > > contents. Thank you.
> >
> > http://cimss.ssec.wisc.edu/~gumley/imagetools.html
> Or (with less sophisication) use the native idl commands
> write_gif,filename.gif,tvrd()
> write_jpeg,filename.jpg,tvrd()
> I regularly use these from the idl command line (or within a program) to
> grab an image and then insert the resulting "picture file"  into a WORD
> report or powerpoint presentation.

WRITE_GIF in combination with TVRD will only work reliably in 8-bit
display mode, while WRITE_JPEG in combination with TVRD will only work
reliably in 24-bit display mode. This is why I wrote SAVEIMAGE: it works
reliably in either 8-bit or 24-bit mode.