[OpenLayers-Dev] Load a VectorLayer from more than one URL (load several xml files to just one layer)

[Ander Pijoan]

Hi all

I am using OpenLayers to display some data downloaded from the Overpass
API. Unfortunately some times the amount of data I ask for is quite big so
the Overpass API gets the timeout and I don't receive the answer.

So my idea is to chop the query to Overpass API into some pieces, and load
its results in the same layer.

Currently I am downloading the data like this:

 var layer = new OpenLayers.Layer.Vector(Name, {
                  projection: map.displayProjection,
                  strategies: [new OpenLayers.Strategy.Fixed()],
                  protocol: new OpenLayers.Protocol.HTTP({
                     url: *query*,
                     format: new OpenLayers.Format.OSM()
                  }),
                  renderers: ["Canvas", "SVG", "VML"]
              });

I saw that there is some TODOs about making OpenLayers able to download
some WMS layers at a time by inserting a URL array in 'url' parameter.

Is there some good way to do this with the actual code? Something like :

var layer = new OpenLayers.Layer.Vector(Name, {
                  projection: map.displayProjection,
                  strategies: [new OpenLayers.Strategy.Fixed()],
                  protocol: new OpenLayers.Protocol.HTTP({
                     url:* [query1, query2, query3, query4]*,
                     format: new OpenLayers.Format.OSM()
                  }),
                  renderers: ["Canvas", "SVG", "VML"]
              });

Which would be the better way to download all this files into just one
layer?

Thank you very much.

-- 
Ander Pijoan Lamas
Research Assistant, Deustotech
Computer Science Engineer
University of Deusto

E-mail: ander.pijoan at deusto.es
Phone: +34 664471228
in: http://www.linkedin.com/profile/view?id=162888312
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/openlayers-dev/attachments/20130424/1a9093ca/attachment.html>