| pe_vtmethod_forward | |
Retrieves the forward function to transform between vertical coordinate systems
PE_VTMETHFUNC pe_vtmethod_forward (PE_VTMETHOD vtmethod);
| vtmethod | The vertical transformation method object |
Pe_vtmethod_forward returns the function to transform between vertical coordinate systems in the forward direction. Transformations are defined in a particular direction. It is often possible to reverse or inverse the transformation.
On success, returns the vertical transformation method forward transformation; on failure, returns a null pointer.
PE_VTMETHOD egm96bilinear =
pe_vtmethod_new("EGM96_bilinear", &egm96_f,
&egm96_i);
PE_VTMETHFUNC fwd =pe_vtmethod_forward(egm96bilinear);