Fieldconvert allows for a sub-range of the mesh (computational domain) by using an xml input
option and either convert or manipulate the Nektar++ output binary files. Taking as an
example the conversion of the Nektar++ binary files (.chk or .fld) shown before and wanting
to convert just the 2D sub-range defined by -2 ≤ x ≤ 3, -1 ≤ y ≤ 2 the additional flag -r can
be used as follows:
Paraview or VisIt (.vtu format)
FieldConvert test.xml:xml:range=’’-2,3,-1,2’’ test.fld test.vtu
Tecplot (.dat format)
FieldConvert test.xml:xml:range=’’2,3,-1,2’’ test.fld test.dat
where the range information defines the range option of xml input module, the two first
numbers define the range in x direction and the the third and fourth number specify the y
range. A sub-range of a 3D domain can also be specified. For doing so, a third set of numbers
has to be provided to define the z range.