Naver, Daum, Google Open API
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cyber
http://www.subkorea.com/api/google/MapsAPI/map-distance.html 두개소간의 거리 Km로 - xml : 좌표와 거리간 관계?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Google Maps</title>
<script src="http://maps.google.com/maps?file=api&v=2&key=abc...xyz" type="text/javascript"></script>
</head>
<body onunload="GUnload()">
<div id="map" style="width: 550px; height: 450px"></div>
<div id="info"></div>
<a href="dist.htm">Back to the tutorial page</a>
<noscript><b>JavaScript must be enabled in order for you to use Google Maps.</b>
However, it seems JavaScript is either disabled or not supported by your browser.
To view Google Maps, enable JavaScript by changing your browser options, and then
try again.
</noscript>
<script type="text/javascript">
//<![CDATA[
if (GBrowserIsCompatible()) {
var gmarkers = [];
var i = 0;
function createMarker(point,name,html) {
var marker = new GMarker(point);
GEvent.addListener(marker, "click", function() {
marker.openInfoWindowHtml(html);
});
gmarkers[i] = marker;
gmarkers[i].label = name;
i++;
return marker;
}
var degreesPerRadian = 180.0 / Math.PI;
var radiansPerDegree = Math.PI / 180.0;
// Returns the bearing in degrees between two points.
// North = 0, East = 90, South = 180, West = 270.
function bearing( from, to ) {
// See T. Vincenty, Survey Review, 23, No 176, p 88-93,1975.
// Convert to radians.
var lat1 = from.latRadians();
var lon1 = from.lngRadians();
var lat2 = to.latRadians();
var lon2 = to.lngRadians();
// Compute the angle.
var angle = - Math.atan2( Math.sin( lon1 - lon2 ) * Math.cos( lat2 ), Math.cos( lat1 ) * Math.sin( lat2 ) - Math.sin( lat1 ) * Math.cos( lat2 ) * Math.cos( lon1 - lon2 ) );
if ( angle < 0.0 )
angle += Math.PI * 2.0;
// And convert result to degrees.
angle = angle * degreesPerRadian;
angle = angle.toFixed(1);
return angle;
}
// create the map
var map = new GMap2(document.getElementById("map"));
map.addControl(new GLargeMapControl());
map.addControl(new GMapTypeControl());
map.addControl(new GScaleControl());
map.setCenter(new GLatLng(43.907787,-79.359741), 9);
// Read the data
var request = GXmlHttp.create();
request.open("GET", "example.xml", true);
request.onreadystatechange = function() {
if (request.readyState == 4) {
var xmlDoc = GXml.parse(request.responseText);
var markers = xmlDoc.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var lat = parseFloat(markers[i].getAttribute("lat"));
var lng = parseFloat(markers[i].getAttribute("lng"));
var point = new GLatLng(lat,lng);
var html = markers[i].getAttribute("html");
var label = markers[i].getAttribute("label");
var marker = createMarker(point,label,html);
map.addOverlay(marker);
}
var info_html="Straight line distances<br>";
for (var i = 0; i<markers.length; i++) {
for (var j=0; j<markers.length; j++) {
if (i != j) {
var d=gmarkers[i].getPoint().distanceFrom(gmarkers[j].getPoint())/1000;
var html = "<b>From "+gmarkers[i].label+ " To "+gmarkers[j].label;
html += "</b> "+ d.toFixed(5) +" kilometres ";
html += " Bearing: "+bearing(gmarkers[i].getPoint(),gmarkers[j].getPoint())+" degrees<br>";
info_html += html;
}
}
}
// put the assembled results into the info div
document.getElementById("info").innerHTML = info_html;
}
}
request.send(null);
}
else {
alert("Sorry, the Google Maps API is not compatible with this browser");
}
// This Javascript is based on code provided by the
// Blackpool Community Church Javascript Team
// http://www.commchurch.freeserve.co.uk/
// http://econym.googlepages.com/index.htm
//]]>
</script>
</body>
</html>
http://subkorea.com/xe/84581
(*.225.54.140)
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