Hi Rodrigo, Thanks for this hint. I'll take a look at it as well. Regards Jan Am 24.07.2015 2:59 nachm. schrieb Rodrigo Moura <r.moura13@imperial.ac.uk>: Hello Jan, Yes I agree with Spencer that probably the easiest thing would be to use the FieldConvert utility - please see the user manual. You can use a simple command like the following to probe the solution at a given list of points. ./FieldConvert -m interppoints:fromxml=cube.xml:fromfld=cube_t0.fld points.pts field_t0.dat I am sending attached an example for the list of points which should be in a given structure (check the attached points.pts file). You need the XML, the FLD and the PTS file to get a DAT file. Kind regards, Rodrigo .