func Meta(fname string, size int64) (sw *LatLng, squareSize int, err error) {
	if size == 12967201*2 {
		// 1 arcsecond
		squareSize = 3601
	} else if size == 1442401*2 {
		// 3 arcseconds
		squareSize = 1201
	} else {
		return sw, squareSize, fmt.Errorf("hgt file cannot identified (only 1 arcsecond and 3 arcsecond supported, file size = %d)", size)
	}
	sw, err = southWest(fname)
	return sw, squareSize, err
}
// Meta reads meta information of SRTM file
Meta reads meta information of SRTM file
// Meta reads meta information of SRTM file
func Meta(fname string, size int64) (sw *LatLng, squareSize int, err error) {
	if size == 12967201*2 {
		squareSize = 3601
	} else if size == 1442401*2 {
		squareSize = 1201
	} else {
		return sw, squareSize, fmt.Errorf("hgt file cannot identified (only 1 arcsecond and 3 arcsecond supported, file size = %d)", size)
	}
	sw, err = southWest(fname)
	return sw, squareSize, err
}
func Meta ( fname string , size int64 ) ( sw * LatLng , squareSize int , err error ) { if size == 12967201 * 2 { squareSize = 3601 } else if size == 1442401 * 2 { squareSize = 1201 } else { return sw , squareSize , fmt . Errorf ( " " , size ) } sw , err = southWest ( fname ) return sw , squareSize , err }
Meta reads meta information of SRTM file
Meta reads meta information of SRTM file
// 1 arcsecond // 3 arcseconds