如何使用多个GeoMaps
如果我只有一个映射,一切都可以。如果我尝试添加另一个,而不再次加载geomap可视化,则该映射不会加载,如果我尝试加载它们,则会出现错误:Uncaught TypeError: Object #<Object> has no method 'Load'
两个映射的函数名称相同,如果我更改第二个映射的功能名称,则我必须更改回调
google.setOnLoadCallback(drawMap);
但是,如果我这样做,我会收到上面发布的错误。。。。
更多代码:
//first map
<script type="text/javascript">
google.load("visualization", "1", {"packages": ["geomap"]});
google.setOnLoadCallback(drawMap);
function drawMap() {
var data = new google.visualization.DataTable();
data.addRows(16);
data.addColumn("string", "City");
data.addColumn("number", "Numar anunturi");
data.setValue(1, 0, 'Ilfov');
data.setValue(1, 1, 6);
var options = {width: 800,height:400};
options["region"] = "RO";
options["colors"] = [0xFF8747, 0xFFB581, 0xc06000]; //orange colors
options["dataMode"] = "markers";
var container = document.getElementById("map_chart_div");
var geomap = new google.visualization.GeoMap(container);
geomap.draw(data, options);
}
</script>
//second map
<script type="text/javascript">
function drawMap() {
var data = new google.visualization.DataTable();
data.addRows(16);
data.addColumn("string", "City");
data.addColumn("string", "pret/mp:");
data.setValue(0, 0, 'Ilfov');
data.setValue(0, 1, '50.44');
var options = {width: 800,height:400};
options["region"] = "RO";
options["colors"] = [0xFF8747, 0xFFB581, 0xc06000]; //orange colors
options["dataMode"] = "markers";
var container = document.getElementById("map_pret_div");
var geomap = new google.visualization.GeoMap(container);
geomap.draw(data, options);
}
</script>
我如下修改了您的代码,现在它似乎可以工作了,尽管您必须耐心等待第二个映射的加载。在启动第二张地图之前,我正在听第一张地图上的drawingDone事件。我的理论是,这种交错防止了这两个地图在可视化API内部踩到彼此的数据结构。但即使我对原因的看法是错误的,这至少是有效的。
我的零钱需要整理一下。很抱歉。我有点赶时间,但我想在跑去做其他事情之前把工作代码给你。
<script type="text/javascript">
google.load("visualization", "1", {"packages": ["geomap"],"callback": "drawMaps"});
function drawMaps() {
drawMap1();
}
function drawMap1() {
var data = new google.visualization.DataTable();
data.addRows(16);
data.addColumn("string", "City");
data.addColumn("number", "Numar anunturi");
data.setValue(1, 0, 'Ilfov');
data.setValue(1, 1, 6);
var options = {width: 800,height:400};
options["region"] = "RO";
options["colors"] = [0xFF8747, 0xFFB581, 0xc06000]; //orange colors
options["dataMode"] = "markers";
var container = document.getElementById("map_chart_div");
var geomap = new google.visualization.GeoMap(container);
geomap.draw(data, options);
google.visualization.events.addListener(geomap, 'drawingDone', drawMap2);
}
function drawMap2() {
var data = new google.visualization.DataTable();
data.addRows(16);
data.addColumn("string", "City");
data.addColumn("string", "pret/mp:");
data.setValue(0, 0, 'Ilfov');
data.setValue(0, 1, '50.44');
var options = {width: 800,height:400};
options["region"] = "RO";
options["colors"] = [0xFF8747, 0xFFB581, 0xc06000]; //orange colors
options["dataMode"] = "markers";
var container = document.getElementById("map_pret_div");
var geomap2 = new google.visualization.GeoMap(container);
geomap2.draw(data, options);
}
</script>