javascript 传单：更新地图

Leaflet: update map

提问by Eleanore

Here is my function that I use to draw a Leaflet map in my website:

这是我用来在我的网站上绘制传单地图的函数：

function drawTweetMap(points) {
    if (tweetMap != null)
        tweetMap.remove();  

    var london = [51.505, -0.09];
    tweetMap = L.map('tweetMap').setView(london, 5);

    var cloudmadeUrl = 'http://{s}.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.jpg';
    var subDomains = ['otile1','otile2','otile3','otile4'];
    var cloudmadeAttrib = 'Data, imagery and map information provided by <a href="http://open.mapquest.co.uk" target="_blank">MapQuest</a>, <a href="http://www.openstreetmap.org/" target="_blank">OpenStreetMap</a> and contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/" target="_blank">CC-BY-SA</a>';
    L.tileLayer(cloudmadeUrl, 
                  {attribution: cloudmadeAttrib, 
                   maxZoom: 18,
                   subdomains: subDomains})
    .addTo(tweetMap);

    var markers = L.markerClusterGroup();
    var points_rand = L.geoJson(points, {onEachFeature: onEachFeature});
    markers.addLayer(points_rand);
    tweetMap.addLayer(markers);
    tweetMap.fitBounds(markers.getBounds());
}

This function is called periodically:

此函数会定期调用：

mapWatch = setInterval(function() {
    retrieveCurrentTweetPositions()},
numMinutes*60*1000);

in this function:

在这个函数中：

function retrieveCurrentTweetPositions() {
    var points = retrieveCurrentPositions();
    var mapInput = translatePointsInMapFormat(points);
    drawTweetMap(mapInput);
}

Unfortunately, if the map is drawn in this way, the result is the following:

不幸的是，如果以这种方式绘制地图，结果如下：

In other questions I found that it is possible to invalidate the size of the map to fix this problem, so it was suggested to call on startup this function:

在其他问题中我发现可以使地图的大小无效来解决这个问题，所以建议在启动时调用这个函数：

function updateTweetMapPosition() { 
    setTimeout(function(){
        tweetMap.invalidateSize(true);}
    ,500)
}

I did so, and this solves the problem during the first map drawing. However, when I try to redraw the map for a second time, the result is as follows:

我这样做了，这解决了第一次绘制地图时的问题。但是，当我尝试第二次重绘地图时，结果如下：

Has anyone experienced this problem? How can I redraw the map with a full loading of its content?

有没有人遇到过这个问题？如何重新绘制地图并加载其内容？

Thanks.

谢谢。

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EDIT

编辑

Here is the jsFiddle: http://jsfiddle.net/qzpwvqzk/

这是 jsFiddle：http: //jsfiddle.net/qzpwvqzk/

回答by Brett DeWoody

Take a look at the redraw()method.

看一下redraw()方法。