Threshold requires scalars to threshold within, and tiff has RGBA data in it which ParaView thinks of as a vector (for the most part). You could use the calculator to compute a magnitude of that or pull out individual components and then the threshold filter will be available. Alternatively, in 3.10.2 you can turn on the auto convert properties preference and ParaView will do something similar for you.
The warp isn't available for the same reason and another. Besides lacking scalars to warp on, tiff files are read in as regularly structured image data, in which the point locations are not allowed to move around (if they were it wouldn't be regularly structured). So you also got to convert to an unstructured type to make it possible to move the points, after which the warp filter will be available. The tetrahedralize filter will do that for you, and the threshold filter does that for you as a side effect too. David E DeMarle Kitware, Inc. R&D Engineer 28 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-371-3971 x109 On Wed, Jul 27, 2011 at 10:39 PM, Jason Haraldsen <[email protected]> wrote: > I am trying to use warp by scalar and threshold filters on tiff and png > files. However, they are grayed out and not usable. Does anyone know if > there are specific inputs need? I got it to work with a different png file, > but others do not work. > > Any help is greatly appreciated. > > J > _______________________________________________ > 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 > > _______________________________________________ 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
