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This is a multipart message in MIME format. --=_alternative 002C79EAC1256BA4_ Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="iso-8859-1" Hello, I'm displaying a cloud through a 3D display: something like ( index -> (x,y,z,color) ) in Visad notation. When you have more than 20000 vertices displayed , operations like=20 rescaling an axis are very slow. To deal with this issue, I had the idea=20 to mask some vertices. For example, with 50000 vertices, I would=20 temporarily (during the rescaling operation) display only 1 out of 4=20 vertices. Does someone know an efficient way to do that, i.e. without=20 removing the reference data, and creating a new one with only 12500=20 vertices ? Thanks by advance. Renaud DA=CFAN --=_alternative 002C79EAC1256BA4_ Content-Transfer-Encoding: quoted-printable
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