I wonder if this is because of the multiple celldata -> point data conversions. Do you have an example dataset you can share?
On Sun, Mar 28, 2010 at 1:45 AM, Peter Brady <[email protected]> wrote: > Hello list, > > I have a 3D dataset with a Temperature field. My goal is to insert a sphere > source and determine the tangential temperature gradient on the surface of > the sphere at various zenith angles. The data is output from the code as > cell data. Here is the way I'm doing this (through pvpython) > > 1. Apply CellDataToPointData > 2. Apply ComputeDerivatives (to get the 'Scalar Gradient') > 3. Apply another CellDataToPointData (to turn the derivatives into point > data) > 4. Resample the data from step 3 with my sphere source. > 5. Use a programmable filter to combine the xyz derivatives appropriately. > > The data is reasonable but it's fairly choppy. When I look at dT/dx, dT/dy, > and dT/dz (before I project them onto the sphere surface), and plot them at > a particular zenith angle around the azimuth of the drop, dTdx and dTdy are > very smooth but dT/dz is fairly choppy (especially above the equator of the > drop). If I expand my sphere to a place where there's not a lot going on > dT/dz seems to calm down. Is there a way to smooth dT/dz in the location of > interest or should I try to write my own derivatives filter to make them > smoother? Any thoughts? > > Thanks, > Peter. > > _______________________________________________ > 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
