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你好我會改變地圖中的標記，我使用rails，並且我爲這個標記寫了這個javascript函數，所以如果我用url更改標記：「icona.png」其中icona.png其中icona.png位於同一個文件夾中資源促銷沒有在地圖上顯示我的標記。爲什麼？如何改變默認市場還有另一種方法？Rails如何更改Google地圖標記？
function setMarkers(map, locations) {
// Add markers to the map
// Marker sizes are expressed as a Size of X,Y
// where the origin of the image (0,0) is located
// in the top left of the image.
// Origins, anchor positions and coordinates of the marker
// increase in the X direction to the right and in
// the Y direction down.
var image = {
url: "icona.png",
// This marker is 20 pixels wide by 32 pixels tall.
size: new google.maps.Size(20, 32),
// The origin for this image is 0,0.
origin: new google.maps.Point(0,0),
// The anchor for this image is the base of the flagpole at 0,32.
anchor: new google.maps.Point(0, 32)
};
var shadow = {
url: "icona.png",
// The shadow image is larger in the horizontal dimension
// while the position and offset are the same as for the main image.
size: new google.maps.Size(37, 32),
origin: new google.maps.Point(0,0),
anchor: new google.maps.Point(0, 32)
};
// Shapes define the clickable region of the icon.
// The type defines an HTML <area> element 'poly' which
// traces out a polygon as a series of X,Y points. The final
// coordinate closes the poly by connecting to the first
// coordinate.
var shape = {
coord: [1, 1, 1, 20, 18, 20, 18 , 1],
type: 'poly'
};