[OpenLayers-Users] custom getFeatureInfo control / problem with layer pixels

[Gery .]

I've recently tested the openlayers.control.getfeature to do something related to your question but sorry to say this, I didn't understand what you're trying to do.

Sent from my iBath

On Feb 14, 2013, at 19:12, "negroscuro" <mario.nunez at atosresearch.eu> wrote:

Hello,
I am trying to do a customized getFeatureInfo, so in order to do the request
to the WMS I need to know the I and J defined in the OGC WMS 1.3.0
specification, I mean to do the getFeatureInfo request i need a I and J,
being those I and J pixels of the layer.

If I am not wrong, when I implemented a control to handle the click on map
event, I get a X and Y pixels but those pixels I guess that dont match the
layers ones because that x and y from the event are based in the viewport
extension and not in a concrete layer extension so my question here is how
to get the choosen layer X and Y when I click on it or just get some null
value to know that I am clicking outside my concrete layer.

I know which layer is selected but I dont know how to convert the vieport x
and y clicked in that layer's X and Y pixels.

Do I explained myself clearly enough?
Sorry for my english.
Thank you in advance for helping
Cheers.



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