Re: [Qgis-developer] Getting center of layer in lat/long

Wed, 10 Sep 2014 04:06:07 -0700 

On 09/09/2014 05:36 AM, Mark Coletti wrote:

        layerCenter = layer.extent().center()
if layer.crs().geographicFlag() : # if already lat/long, do nothing 
            return layerCenter
        else :
sourceCRC = layer.crs() # get the coordinate reference system being used 
            # 4326 is WGS 84
coordinateTransform = QgsCoordinateTransform(sourceCRC.toWkt(), QgsCoordinateReferenceSystem(4326).toWkt()) 
            return coordinateTransform.transform(layerCenter)
If you want to be rigorous, there are different lat/long coordinate system, it is not only WGS84. The difference will be small of course, but I do not see the point of specifically testing for this case while it does not add anything. 

Regards,

Leyan
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