Hi, We have now pushed the fix/Fieldconvert branch into master. This update has added C0Projection (perform a C0 projection) and interpfield (interpolate one field to another) options to the master branch. I have put some preliminary instructions on how to use these options under the page: https://www.nektar.info/wiki/3.4.1/UserGuide/Tutorial/FieldConvertInterpPoin... which allow one to interpolate a set of points. There is also the ability to add fields in this branch. Once I have tested this option I will update the Wiki with some instructions. Cheers, Spencer. I now have a feature/FieldConvert Spencer Sherwin Professor of Computational Fluid Mechanics, Department of Aeronautics, Imperial College London South Kensington Campus London SW7 2AZ s.sherwin@imperial.ac.uk +44 (0) 20 759 45052