How to export field values on the surface of an object along with coordinates

Export field values on the surface along {x,y,z}

Solution:

Field values on the surface of an object can be exported along with the coordinates using the Fields Calculator as follows:

1. Select the field quantity from the ‘Named Expressions’, for e.g. Mag_E.
   
   
2. Select the surface of the geometry
   
   
3. From the Output stack, choose ‘Value’.
   
   This will create the expression
   
4. From the Output stack, select ‘Write…’ and specify the file name in the pop-up window to save the *.fld file which will contain 4 column data with coordinates followed by the value i.e. {x, y, z, f(x,y,z)}.