| pe_geogtran_parameters | |
Retrieves the parameters of a geographic transformation.
void pe_geogtran_parameters (PE_GEOGTRAN geogtran, PE_PARAMETER parameters[PE_PARM_MAX]);
| geogtran | Geographic transformation object |
| parameters | The array of any needed geographic transformation parameters |
Returns the parameters of a geographic transformation. The parameters can include
PE_PARM_DX /* X-axis translation */
PE_PARM_DY /* Y-axis translation */
PE_PARM_DZ /* Z-axis translation */
PE_PARM_RX /* X-axis rotation */
PE_PARM_RY /* Y-axis rotation */
PE_PARM_RZ /* Z-axis rotation */
PE_PARM_DS /* Scale difference */
PE_PARM_XCR /* X coordinate of rotation origin */
PE_PARM_YCR /* Y coordinate of rotation origin */
PE_PARM_ZCR /* Z coordinate of rotation origin */
PE_PARM_ND /* Name of dataset for file-based methods */
You should initialize the elements of the parameter array. See below for an example.
On success, an array of parameters for the geographic transformation. On failure, a null pointer.
PE_PARAMETER gt_par[PE_PARM_MAX];
for (i=0; i<PE_PARM_MAX; i++)
{
gt_par[i] = (PE_PARAMETER)0;
}
pe_geogtran_parameter(agd2wgs, gt_par);