Hi, I just submitted a bug on this: http://paraview.org/Bug/view.php?id=12944
But I'm wondering if there's a way to work around it. The problem is that I'm trying to modify the coordinates insitu using the displacement, but that ends up deleting the cell data. Is there any way to merge the cell data from one data source into the another? Something like this: InputData = InputData() #get the input data from coprocessing Calculator = Calculator () #removes the cell data Merged = CopyCellDataFromAtoB (InputData, Calculator) #copies the cell data from InputData, but uses modified mesh from Calculator Thanks, Nathan. _______________________________________________ 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