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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi Cicero, > I´m using VisAD to visualize radar and lightling data. Now I've inserted > also a GIF image on the background by visad.data.gif.GIFForm. The image > is apearing behind all the other data, as it shoud. > > The problem is that I could not make the undefined radar data invisible > (alpha =0). I´m using a Integer2DSet and setting the points outside the > radar range to Float.NaN but these points apear on the display´s > background color. > > I also tried to map to RGBA instead of RGB but didn´t worked either. Transparency works in a number of our examples, so I don't know enough to know what your problem is. Unless you are using DisplayImplJ2D, which does not support transparency. Good luck, Bill ---------------------------------------------------------- Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI 53706 hibbard@xxxxxxxxxxxxxxxxx 608-263-4427 fax: 608-263-6738 http://www.ssec.wisc.edu/~billh/vis.html
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