// Export coordinate system in PROJ.4 format func (sr SpatialReference) ToProj4() (string, error) { var p *C.char err := C.OSRExportToProj4(sr.cval, &p) if err != 0 { return "", error(err) } proj4 := C.GoString(p) return proj4, nil }
// Export coordinate system in PROJ.4 format func (sr SpatialReference) ToProj4() (string, error) { var p *C.char err := C.OSRExportToProj4(sr.cval, &p).Err() proj4 := C.GoString(p) return proj4, err }