// Fetch a projection parameter value
func (sr SpatialReference) ProjectionParameter(name string, defaultValue float64) (float64, error) {
cName := C.CString(name)
defer C.free(unsafe.Pointer(cName))
var cErr C.OGRErr
value := C.OSRGetProjParm(sr.cval, cName, C.double(defaultValue), &cErr)
return float64(value), cErr.Err()
}
// Fetch a normalized projection parameter value
func (sr SpatialReference) NormalizedProjectionParameter(
name string, defaultValue float64,
) (float64, error) {
cName := C.CString(name)
defer C.free(unsafe.Pointer(cName))
var err C.OGRErr
value := C.OSRGetProjParm(sr.cval, cName, C.double(defaultValue), &err)
if err != 0 {
return float64(value), error(err)
}
return float64(value), nil
}