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/* 測地系変換 */

function convertLatLng(params){
	var x = params.x / 60 / 60;
	var y = params.y / 60 / 60;
	y = y - y * 0.00010695 + x * 0.000017464 + 0.0046017;
	x = x - y * 0.000046038 - x * 0.000083043 + 0.010040;
	return {
		lat: y,
		lng: x
	};
}