Err, I thought I had it working. I just realized that the data I see in my
Javascript editor is pixel positioning not lat/long:
<path id="OpenLayers.Geometry.Polygon_239" d=" M
272.2026427256986,175.77014412882204 270.3901427256986,175.83264412882204
269.0776427256986,176.33264412882204 268.3901427256986,177.52014412882204
268.2651427256986,178.89514412882204 268.7651427256986,179.83264412882204
270.6401427256986,180.20764412882204 272.5776427256986,180.45764412882204
274.5151427256986,179.52014412882204 275.8276427256986,179.20764412882204
275.8276427256986,177.58264412882204 274.2651427256986,176.52014412882204
273.7026427256986,176.14514412882204 272.2026427256986,175.77014412882204 z"
fill-rule="evenodd" fill="#ee9900" fill-opacity="0.4" stroke="#ee9900"
stroke-opacity="1" stroke-width="1" stroke-linecap="round"
stroke-linejoin="round" stroke-dasharray="none" pointer-events="visiblePainted"
cursor="inherit"></path>
Could you please provide a code snippet whereby I could get the appropriate
lat/long vertices for a polygon I just drew? I was trying variations on "p=new
OpenLayers.Geometry.Polygon(document.getElementById("OpenLayers.Geometry.Polygon_239").getAttribute('d'))"
But now I see I'm way off!
Thanks much,
David
On Jul 7, 2010, at 6:34 PM, Lime, Steve D (DNR) wrote:
> Take a look at FeatureServer (or perhaps the WFS-T support in GeoServer or
> Tiny WFS). Such tools would facilitate the writing of geometries
> to a data store (e.g. PostGIS) that MapServer could read from. Of course you
> could write your own tool to do that. We've used rails and serialized
> geometries to/from OpenLayers as WKT easy enough.
>
> Steve
> ________________________________________
> From: [email protected]
> [[email protected]] On Behalf Of David Jantzen
> [[email protected]]
> Sent: Wednesday, July 07, 2010 6:13 PM
> To: [email protected]
> Subject: Re: [mapserver-users] Allowing users to draw polygons on MapServer
> maps
>
> Hmm, this looks close to what I want:
>
> http://openlayers.org/dev/examples/draw-feature.html
>
> Any idea how I would export the polygons to a shapefile/database? What about
> loading them from a previous session?
>
> Thanks,
> David
>
> On Jul 7, 2010, at 2:50 PM, <[email protected]>
> <[email protected]> wrote:
>
>>
>> On Jul 7, 2010, at 5:19 PM, ext David Jantzen wrote:
>>
>>> Hi All,
>>>
>>> I've never used MapServer before, so this is definitely a newbie question.
>>> I've read a bunch of the documentation and FAQ, but I haven't yet found a
>>> clear answer to this question:
>>>
>>> Can I use MapServer to host a map, on which my clients can draw polygons
>>> and export them as shapefiles or into a database? If not, is there another
>>> (open source) product that can?
>>>
>>> Seems like one of the scripting toolkits could do this, but not without
>>> significant custom front end work.
>>
>> I think this is approximately accurate. Personally, I would probably use
>> GeoDjango/OpenLayers for this kind of task.
>>
>> Regards,
>> --
>> Christopher Schmidt
>> Nokia
>>
>
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> mapserver-users mailing list
> [email protected]
> http://lists.osgeo.org/mailman/listinfo/mapserver-users
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