[OpenLayers-Users] Looking for Example interface for auto-re-centering of view (from URL call)

[James Morley]

Hi, I hacked together something along these lines here -
http://www.whatsthatpicture.com/flickr/commons-map.php?lon=99796.004965972&lat=6945659.600239&zoom=4

Sorry, the code needs a good clean up but you'll see there's a
function getParameterByName(name) which makes all the url parameters
available (much like Arnd's example) e.g. setting lon = urlparams.lon
or setting default values if none are present in the url.

These are then used in map.setCenter(new OpenLayers.LonLat(lon,lat), zoom);

When a user moves around the map it also updates the url using
window.history.pushState so you get permalinks for specific views.


On Wed, Oct 24, 2012 at 10:17 PM, Arnd Wippermann
<arnd.wippermann at web.de> wrote:
>
> You can use
>
> /**
>  * Function: getParameters
>  * Parse the parameters from a URL or from the current page itself into a
>  *     JavaScript Object. Note that parameter values with commas are
> separated
>  *     out into an Array.
>  *
>  * Parameters:
>  * url - {String} Optional url used to extract the query string.
>  *                If url is null or is not supplied, query string is taken
>  *                from the page location.
>  *
>  * Returns:
>  * {Object} An object of key/value pairs from the query string.
>  */
> OpenLayers.Util.getParameters = function(url) {
>
> to parse the url and use the parameters to do something like Curtis
> suggested.
>
> Arnd
>
>
> ________________________________
>
> Von: openlayers-users-bounces at lists.osgeo.org
> [mailto:openlayers-users-bounces at lists.osgeo.org] Im Auftrag von Basques,
> Bob (CI-StPaul)
> Gesendet: Mittwoch, 24. Oktober 2012 21:47
> An: openlayers-users at lists.osgeo.org
> Betreff: [OpenLayers-Users] Looking for Example interface for
> auto-re-centering of view (from URL call)
>
>
> All,
>
> Anyone know of a demo that Auto-recenters view from a URL call.  Want to
> zoom to a point on a map, and recenter the view based on a URL.
>
> The idea is to stay tuned to a tracking GPS in a Fleet asset, and basically
> follow along as they move.
>
> Thanks
>
> Bobb
>
> _______________________________________________
> Users mailing list
> Users at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/openlayers-users



-- 
---
James Morley
www.jamesmorley.net / @jamesinealing
www.whatsthatpicture.com / @PhotosOfThePast
www.apennypermile.com