Using the maximum value of any scalar field as the threshold for an isosurface will always give a null object. In fact, the smallest isosurface you could ever construct is a single triangle, intersecting 3 edges connecting one vertex greater than your threshold, and three other vertices below your threshold.
this is the second case in this figure: http://en.wikipedia.org/wiki/File:MarchingCubes.svg you should rethink your strategy of using the maximum value as input threshold. That being said, there is a much faster way to get the range (the min and maximum) of a scalar field from within the Pogrammable Filter. Simply use GetRange() max = temperature.GetRange()[1] ----------------- Jean M. Favre Swiss National Supercomputing Center _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
