Hi Coup, You could try digging through the YQL library or another web-based service like tinygeocoder to get the coordinates client-side. Not sure if this helps.
On Thu, Jun 16, 2011 at 1:02 PM, Coup Coup <[email protected]> wrote: > Hi, > I am using OpenLayers client side with a postGIS backend and have a map of > county and zip layers that are hidden (each layer has one feature). > I want to show them when the user requests them in a form GUI. > > To do this I need to : > A) Obtain the centroid of the zip inputted from the features' geometry of > the corresponding layer. > B) Loop through the layers and perform a distance query on the centroid as > compared to each layer's geometry to determine if it resides within x miles. > C) Show the layer when the distance query returns true. > > I know how to toggle layer visibility (C). And I know how to access > individual layers. I could use Ajax to perform the distance queries in > POSTGIS, but would like to know how to do it client side so I can gauge > performance (and gain more knowledge working with OpenLayers). > > Can anyone provide any insight or examples specifically in referencing > geometries from layers and performing distance queries on them? > > _______________________________________________ > Users mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-users > >
_______________________________________________ Users mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/openlayers-users
