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Hi Stu, You'll need multiple RealTypes all with the same values, such as ((x, y, z) -> (value, value_copy1, value_copy2, ...)). Doesn't need more memory though, if you use the same array and copy = false in setSamples(). That is: float[] vals = ... float[][] values = {vals, vals, vals, ...}; Cheers, Bill p.s. I hope you appreciate this reply was typed on a French keyboard. ---------------------------------------------------------- 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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