Hi,
thanks. It is so simple and works.
I have worked with documentation for OpenLayers-2.10 and there was no
function refresh() for vector layers available.
http://dev.openlayers.org/releases/OpenLayers-2.10/doc/apidocs/files/OpenLayers/Layer/Vector-js.html
Also not here:
http://dev.openlayers.org/apidocs/files/OpenLayers/Layer/Vector-js.html
But I found the refresh function now in the developer/internal library
documentation:
http://dev.openlayers.org/docs/files/OpenLayers/Layer/Vector-js.html
That means the function refresh() could changed or removed from API in
future?
Regards,
Hareck.
-----Ursprüngliche Nachricht-----
From: Andreas Hocevar
Sent: Friday, January 14, 2011 2:56 PM
To: har.eck
Cc: [email protected]
Subject: Re: [OpenLayers-Users] Changing URL in vector layer
Hi,
all you have to do is:
myVectorLayer.refresh({url: newUrl});
This is how it works:
1) Layer.Vector::refresh triggers the refresh event
2) Strategy.Fixed listens to the refresh event, and calls
Strategy.Fixed::load
3) Strategy.Fixed::load calls Protocol.HTTP::read with the options passed to
Layer.Vector::refresh, and url is a recognized option for
Protocol.HTTP::read
Regards,
Andreas.
On Jan 14, 2011, at 08:52 , har.eck wrote:
Hi all,
I add a vector layer with GPX file to my map. Now I will change the url of
GPX file in vector layer. There is no special function for this. For GML
layer it is possible to call setUrl(). This isn’t possible for vector
layers, so I do this:
function setNewUrl(){
myVectorLayer.setVisibility(false);
myVectorLayer.destroyFeatures();
myVectorLayer.protocol.url = newUrl;
myVectorLayer.protocol.options.url = newUrl;
myVectorLayer.drawn = false;
myVectorLayer.setVisibility(true);
}
My vector layer:
var myVectorLayer, map;
myVectorLayer = new OpenLayers.Layer.Vector(
myLayerName,
{
protocol: new OpenLayers.Protocol.HTTP({
url: myUrl,
format: new OpenLayers.Format.GPX()
}),
strategies: [new OpenLayers.Strategy.Fixed()],
displayInLayerSwitcher: false,
style: {strokeColor: "blue", strokeWidth: 4, strokeOpacity: 0.5},
projection: new OpenLayers.Projection("EPSG:4326")
}
);
myVectorLayer.setVisibility(true);
map.addLayer(myVectorLayer);
}
My function setNewUrl() doesn’t work.
I can’t find the correct solution in openLayers sources.
Which function reads the file after changing url? What is here wrong?
Thanks Hareck
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Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.
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