[OpenLayers-Users] Trying to draw a box on a map, and get the coordinates back.

[Jtrsmith]

thank you that works.
is it possible to get the vertices in a geojson coordinate format? 

i.e.
[-277, 359], [-277, 407], [-238, 407], [-238, 359], [-277, 359]

instead of
POINT(-277 359),POINT(-277 407),POINT(-238 407),POINT(-238 359)
 
thanks again

John



Arnd Wippermann wrote:
> 
> Hi,
> 
> That should it be. 
> 
> function findcoords (event) {
>      var vertices = event.feature.geometry.getVertices();
>      alert('ID:' + vertices); 
> } 
> 
> Arnd
> 
> -----Ursprüngliche Nachricht-----
> Von: users-bounces at openlayers.org [mailto:users-bounces at openlayers.org] Im
> Auftrag von Jtrsmith
> Gesendet: Donnerstag, 7. Januar 2010 17:27
> An: users at openlayers.org
> Betreff: Re: [OpenLayers-Users] Trying to draw a box on a map, and get the
> coordinates back.
> 
> 
> i am not sure i explained what i was looking for correctly. here is an
> example.
> 
> vectors.events.register('featureadded', vectors, findcoords); function
> findcoords (feature) {
>      var vertices = feature.geometry.getVertices();
>      document.getElementById('output').value = 'ID:' + vertices; }
> 
> the event does actually trigger, however, feature.geometry.getVertices()
> does not work.
> 
> i am using geojson to display other polygons on the map, and would like
> the
> variable vertices to get the coordinates of the polygon vertices so that i
> can add a new polygon to the map and save the coordinates in a database.
> 
> John
> 
> 
> micklesh wrote:
>> 
>> Hi, John.
>> if i understood your requirements, there is an example in the docs 
>> http://dev.openlayers.org/docs/files/OpenLayers/Control-js.html
>> 
>> regards, michael.
>> 
>> 2010/1/4 John Smith <jtrsmith at gmail.com>
>> 
>>> i just saw this post and was wondering if the solution was ever 
>>> found. i am basically trying to do the same thing. I need to draw a 
>>> box around an area of my map and show the coordinates in a form 
>>> field, so i can post the coordinates and a description to my 
>>> database.
>>>
>>> _______________________________________________
>>> Users mailing list
>>> Users at openlayers.org
>>> http://openlayers.org/mailman/listinfo/users
>>>
>>>
>> 
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>> 
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