7. API Market
• Foreign
• Yahoo MAP
• Google MAP
• Microsoft Virtual Earth
• Local
• Urmap
• Taiwan MAP
8. Comparable
Microsoft
Yahoo! Map Google Map Urmap Taiwan Map
Virtual Earth
Require API
YES YES NO YES YES
Key?
Display area
World World World Only Taiwan Only Taiwan
range
YES YES
API Document YES YES YES (MSDN)
(in Chinese) (in Chinese)
Search by No
YES YES YES YES
Address (Commercial)
Marker YES YES YES YES YES
11. Geocode
• By REST Web Service
http://local.yahooapis.com/MapsService/V1/geocode?
appid=YD-9G7bey8_JXxQP6rxl.fBFGgCdNjoDMACQA--
&city=peitou
Response:
<?xml version=quot;1.0quot;?>
<ResultSet xmlns:xsi=quot;http://www.w3.org/2001/XMLSchema-instance
xsi:schemaLocation=quot;urn:yahoo:maps http://api.local.yahoo.com/M
GeocodeResponse.xsdquot;>
<Result precision=quot;zipquot;>
<Latitude>25.130590</Latitude>
<Longitude>121.498306</Longitude>
<Address></Address>
<City>Beitou District</City>
<State>Taiwan</State>
<Zip></Zip>
<Country>TW</Country>
</Result>
</ResultSet>
<!-- ws03.ydn.gq1.yahoo.com compressed/chunked Tue May 5 23:50
12. Hello Map
<!DOCTYPE html quot;-//W3C//DTD XHTML 1.0 Strict//ENquot;
quot;http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtdquot;>
<html xmlns=quot;http://www.w3.org/1999/xhtmlquot;>
<head>
<meta http-equiv=quot;content-typequot; content=quot;text/html; charset=utf-8quot;/>
<title>Google Maps JavaScript API Example</title>
<script src=quot;http://maps.google.com/maps?
file=api&v=2&key=abcdefg&sensor=true_or_falsequot;
type=quot;text/javascriptquot;></script>
<script type=quot;text/javascriptquot;>
function initialize() {
if (GBrowserIsCompatible()) {
var map = new GMap2(document.getElementById(quot;map_canvasquot;));
map.setCenter(new GLatLng(25.1225,121.5140), 13);
map.setUIToDefault();
}
}
</script>
</head>
<body onload=quot;initialize()quot; onunload=quot;GUnload()quot;>
<div id=quot;map_canvasquot; style=quot;width: 500px; height: 300pxquot;></div>
</body>
</html>
13. Map Center
setCenter( )
• map.setCenter(new GLatLng(25.1225,121.5140), 15);
14. Map Type
• map.setMapType(G_SATELLITE_MAP);
• G_NORMAL_MAP displays the default road map view
• G_SATELLITE_MAP displays Google Earth satellite images
• G_HYBRID_MAP displays a mixture of normal and satellite views
15. Control
addControl( )
• Position Control GControlPosition()
• G_ANCHOR_TOP_RIGHT or BUTTOM_RIGHT
• G_ANCHOR_TOP_LEFT or BUTTOM_LEFT
• Map Control
• GSmallMapControl()
• GLargeMapControl()
16. Info Window
• map.openInfoWindow(map.getCenter(),document.
createTextNode(quot;Here is Yang-Ming Universityquot;));
17. Marker
map.addOverlay( )
var point = new GLatLng(25.1225, 121.5140);
var marker = new GMarker(point);
map.addOverlay(marker);
