y2blog

1
1
1
200
0

(C) Yahoo Japan Corporation.


1

point
139.31234,35.322153


180.7
218.96511516407
38.265115164067

var addressOfLocation = "";

//==============================================
// reverse geocoding request [ GSI ]
//==============================================
function doGeoReverseGeocodingRequestGSI( lat, lon, callback ){
	
	addressOfLocation = "";
	
	var baseURL = 'http://portal.cyberjapan.jp/GsiJsLibrary/LonLatToLv01.php';
	
	var address = "";
	var url = baseURL;
		url += "?longitude=" + lon + "&latitude=" + lat;

	var parameter = {};
	parameter[ 'request' ] = url;
	
	jQuery( document ).ajaxError( function() {
		console.log(" 'AJAX ERROR' has been occurred. ");
	});

	function getResult( json ) {
		jQuery.proxy( ajaxReadyStateChangeHandler, this )( json, callback );
	}

	// AJAX request [ jQuery ]
	jQuery.ajax({
		type: "GET",
		url: url,
		data: parameter,
		dataType: "json",
		timeout: 30000,
		success: getResult
	});

	function ajaxReadyStateChangeHandler( json, callback ) {
	
		if ( json ) {
			var prefCd   = json.result[0].prefCd ? json.result[0].prefCd : "";
			var prefNm   = json.result[0].prefNm ? json.result[0].prefNm : "";
			var muniCd   = json.result[0].muniCd ? json.result[0].muniCd : "";
			var muniNm   = json.result[0].muniNm ? json.result[0].muniNm : "";
			var muniKana = json.result[0].muniKana ? json.result[0].muniKana : "";
			var conNm    = json.result[0].conNm ? json.result[0].conNm : "";
			var conKana  = json.result[0].conKana ? json.result[0].conKan : "";
			var lv01Nm   = json.result[0].lv01Nm ? json.result[0].lv01Nm : "";
			var lv01Kana = json.result[0].lv01Kana ? json.result[0].lv01Kana : "";
			var lat      = json.result[0].latitude ? json.result[0].latitude : "";
			var lon      = json.result[0].longititude ? json.result[0].longititude : "";
			
			// remove undesired ideographics space (a.k.a. Zenkaku Space) of "muniNm' and "muniKana" fields
			muniNm   = muniNm.replace(/\u3000/g, "");
			muniKana = muniKana.replace(/\u3000/g, "");

			addressOfLocation += prefNm + muniNm + conNm + lv01Nm;
		}

		// initiate callback 
		callback( address );
	}
}

	getAddressResult : function(json)
	{
		if (json.results){
			var address = "";
			var addObj = json.results;
			var addressData = GSI.MUNI_ARRAY[parseInt(addObj.muniCd,10)+""];
			if (addressData) {
				addressData = addressData.split(",");
				var muniNm = (addressData[1]+addressData[3]).replace("　","");
				address += muniNm;
			}
			if (addObj.lv01Nm) address += addObj.lv01Nm;

			$("#address").empty();
			$("#address").append(address ? address : "---");
			this.refreshSize();
		}
	},
	getElevationRusult : function (data, dataSrc)
	{
        var outPutHeight = data + "（" + this.vDemAltSRC + "）";

		$( "#elevation" ).html( outPutHeight );
		this.refreshSize();
	},
	execRefresh : function (lon, lat)
	{
		this.ajaxAddress = $.ajax({
			type: "GET",
			url:CONFIG.SERVERAPI.GETADDR,
			data: {
				"lon" : lon,
				"lat" : lat
			},
			dataType: "json",
			timeout: 30000,
			success: L.Util.bind( this.getAddressResult, this ),
			error : function(){}
		});

function getZuyouName25K( lat, lon ) {

    // obtain 1/25,000 TOPO Map name list of current map area
    var zuyou_name = check_zuyou_list( lon, lat );
    var zlist = "";
    for( var key in zuyou_name ) {
        zlist = zlist + zuyou_name[key][0] + " , ";
    }
    zlist = zlist.substring( 0, zlist.length - 2 );
    
    return( zlist );
}

//==================================================================================================
// calculate JIS X 0410 Mesh Code
//
// Reference : http://www.stat.go.jp/data/mesh/pdf/gaiyo1.pdf
//==================================================================================================
function getMeshcode( lat, lon, order ) {

	var mesh1d = ""; 
	var mesh2d = "";
	var mesh3d = "";

	if ( order < 1 || order > 3 ) return( "" );

	// lat and lon parameter must be decimal degrees
	// ( lat * 60" ) / 40"  => p  remainder => a
	var meshLat1p =  lat * 60.0 / 40.0;
	var meshLat1a =  ( meshLat1p - Math.floor( meshLat1p ) ) * 40.0; // [ minute ]
	meshLat1p = Math.floor( meshLat1p );
	
	var meshLat2q = meshLat1a / 5.0;
	var meshLat2b =  (meshLat2q - Math.floor( meshLat2q ) ) * 5.0; // [ minute ]
	meshLat2q = Math.floor( meshLat2q );

	var meshLat2r = meshLat2b * 60.0 / 30.0;
	var meshLat2c =  (meshLat2r - Math.floor( meshLat2r ) ) * 30; // [ second ]
	meshLat2r = Math.floor( meshLat2r );

	
	var meshLon1u = lon - 100.0;
	var meshLon1f = meshLon1u - Math.floor( meshLon1u ); // [ degree ]
	meshLon1u = Math.floor( meshLon1u );

	var meshLon2v = meshLon1f * 60.0 / 7.5;
	var meshLon2g = (meshLon2v - Math.floor( meshLon2v ) ) * 7.5; // [ minute ]
	meshLon2v = Math.floor( meshLon2v );

	var meshLon2w = meshLon2g * 60.0 / 45.0;
	var meshLon2h = (meshLon2w - Math.floor( meshLon2w ) ) * 45.0; // [ secoond ]
	meshLon2w = Math.floor( meshLon2w );

	mesh1d = String(meshLat1p) + String(meshLon1u);
	mesh2d = mesh1d + String(meshLat2q) + String(meshLon2v);
	mesh3d = mesh2d + String(meshLat2r) + String(meshLon2w);
	
	var  meshcodes = [ "", mesh1d, mesh2d, mesh3d ];
	
	return( meshcodes[ order ] );
	
}

function getDistanceFromLatLons( lat1, lon1, lat2, lon2 ) {
	
	// Hubeny's distance calculation method
	//
	//  Constants : WGS84 
	//  a = 6,378,137.0 m,   b=6,356,752.314245m, a(1 - e^2) = 6,335,439.327 292 46
	//  e2 = 0.00669437999019758
	//
	var a = 6378137.0;
	var b = 6356752.314245;

	// e2 = ( a * a - b * b) / (a * a); 
	var e2 = 0.00669437999019758;

	// mnum = a * (1 - e2);
	var mnum = 6335439.32729246;

	var deltax = dec2rad( lon2 - lon1 );
	var deltay = dec2rad( lat2 - lat1 );
	var midy   = dec2rad( (lat2 + lat1 ) /2 );

	var sin = Math.sin( midy );
	var w = Math.sqrt( 1 - e2 * sin * sin );
		
	var m = mnum / ( w * w * w );
	var n = a / w;
		
	var distance = Math.sqrt( (deltay * m) * (deltay * m) + 
					( deltax * n * Math.cos(midy) ) * ( deltax * n * Math.cos(midy) ) );
		
	return( distance ); // [ m ]
}