iconv - control correct the directional problem of incompatibility between C and Fortran array structures. Without conversion the Fortran grid is transposed in horizontal direction so the physical domain directions are not related to the appropriate velocity components.

iconv=0 no conversion
iconv=1 conversion clockwise
iconv=-1 conversion counter clockwise (DEFAULT).

idiv5d - allows to reduce the size of the output array, each idiv point of the model array is saved in Vis5D output (DEFAULT idiv5d=1). This option is not active in this Vis5D output version.

iuvsf - option to switch names between U and V velocity components (DEFAULT iuvsf=0).

nd1, nd2 grid dimension in X direction which are used to bound sub domain which is then saved to Vis5d output. This option reduces the size of the output and allows to save only the part of the domain which is interesting for visualization. DEFAULT: nd1=1, nd2=n

md1, md2 same as above but in Y direction (DEFAULT: md1=1, md2=m)

ld1, ld2 same as above but in Z direction (DEFAULT: ld1=1, ld2=L)

nd, md, ld - automatically computed sizes of the Vis5D grid in X, Y, Z directions.