OpenLayers、地图服务器和瓷砖缓存

发布于 2024-08-17 21:53:17 字数 1180 浏览 6 评论 0原文

我想提高使用 OpenLayers、Google 地图和 Google Maps 显示专题地图的应用程序的性能。带有 TileCache 的 MapServer (http://tilecache.org)。因此，我按照安装说明成功安装了TileCache。

在我的应用程序中，我使用以下代码在底图顶部嵌入一个新图层，到目前为止效果良好：

var wms_layer = new OpenLayers.Layer.WMS("WMS layer","localhost/cgi-bin/mapserv"
        {
        map: [path_to_my_mapfile],
        layers: [list of layers],
        transparent:true
       }); 
my_map.addLayer(wms_layer);

文档基本上说传递给 OpenLayers.Layer.WMS 构造函数的 URL 必须指向 TileCache 脚本，即tilecache.cgi 或tilecache.py。

var wms_layer = new OpenLayers.Layer.WMS("WMS layer","localhost/cgi-bin/tilecache/tilecache.cgi"
           {
           map: [path_to_my_mapfile],
           layers: [list of layers],
           transparent:true
          });
my_map.addLayer(wms_layer);

不幸的是它不起作用，这意味着当我切换网址时我看不到地图。知道可能出什么问题吗？也许这是我在tilecache.cfg中错过的配置设置，但我无法弄清楚正确的设置是什么。

有人对这个问题有一些经验吗？

原文

I would like to improve the performance of my application that displays thematic maps using OpenLayers, Google Maps & MapServer with TileCache (http://tilecache.org). Therefore I followed the installation instructions and installed TileCache successfully.

Within my application I have the following code to embed a new layer on top of my basemap that works fine so far:

var wms_layer = new OpenLayers.Layer.WMS("WMS layer","localhost/cgi-bin/mapserv"
        {
        map: [path_to_my_mapfile],
        layers: [list of layers],
        transparent:true
       }); 
my_map.addLayer(wms_layer);

The documentation basically says that the URL passed to the OpenLayers.Layer.WMS constructor must point to the TileCache script, i.e. tilecache.cgi or tilecache.py.

var wms_layer = new OpenLayers.Layer.WMS("WMS layer","localhost/cgi-bin/tilecache/tilecache.cgi"
           {
           map: [path_to_my_mapfile],
           layers: [list of layers],
           transparent:true
          });
my_map.addLayer(wms_layer);

Unfortunately it does not work, meaning that I can see no maps when I switch the url. Any idea what could be wrong? Maybe it is a configuration setting I missed in tilecache.cfg but I could not figure out what the right settings are.

Does anybody have some experiences with this issue?

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