[postgis-users] OSM2pgsql, OpenStreetMap, MapServer, EPSG:900913, OpenLayers: issue
roshni.spain
roshni.aruna at gmail.com
Sat May 8 02:49:34 PDT 2010
Hi Ben Madin,
Thanks for your reply but i am still stuk with the same problem. I have set
the 900913 projection in the epsg file on mapserver, with no success. The
other option was to put the projection directly in the mapfile, but the
result was the same
This is the map server log result (debug level 5).
[Sat May 08 11:43:19 2010].333000 CGI Request 1 on process 6960
[Sat May 08 11:43:19 2010].477000 msDrawMap(): Layer 0 (planet_osm_line),
0.072s
[Sat May 08 11:43:19 2010].477000 msDrawMap(): Drawing Label Cache, 0.000s
[Sat May 08 11:43:19 2010].477000 msDrawMap() total time: 0.073s
[Sat May 08 11:43:19 2010].483000 msSaveImage() total time: 0.006s
[Sat May 08 11:43:19 2010].483000 mapserv request processing time (msLoadMap
not incl.): 0.150s
[Sat May 08 11:43:19 2010].483000 msFreeMap(): freeing map at 01B27910.
I have as well tried to copy and paste the url of the image, and it does not
show, so the problem is not about OpenLayers.
I have been stuck since days with this and i really dont know what to do :(
Ben Madin-3 wrote:
>
> I think you need to ask this on the MapServer List - MapServer doesn't use
> the postgis spatial_ref_sys table for it's projections, but the proj epsg
> library files, so you need to put the definition in there - I googled "
> MapServer Spherical Mercator Projection 900913 " to find out how to do
> this.
>
> alternatively, you could just put the projection directly into the mapfile
> - look at http://spatialreference.org/ref/sr-org/6/
>
> and click on MapServer mapfile
>
> PROJECTION
> "proj=merc"
> "a=6378137"
> "b=6378137"
> "lat_ts=0.0"
> "lon_0=0.0"
> "x_0=0.0"
> "y_0=0"
> "k=1.0"
> "units=m"
> "nadgrids=@null"
> "wktext"
> "no_defs"
> END
>
> good luck.
>
> cheers
>
> Ben
>
> On 06/05/2010, at 21:10 , roshni.spain wrote:
>
>>
>> Hi, I have more or less the same problem than you. I am rendering OSM
>> data
>> (imported to PostGIS with osm2pgsql) and i need to view the map with
>> OpenLayers on MapServer.
>>
>> I am more or less on the same point than you, because when i changed on
>> the
>> map file all the projection info to "init=epsg:900913", the map goes
>> blank.
>> It comes empty with no information. Plus, the mapserver does not return
>> any
>> error in the log, and i really have no clue what i can do to fix this.
>>
>> My OSM data table (planet_osm_line) is on epsg:900913 and this is what i
>> need to show on the map, but with no success. I have tried many options
>> but
>> i can never go further than this.
>> Any clue??
>> Thank you
>>
>>
>> ibrahim saricicek wrote:
>>>
>>> Hi;
>>>
>>> 1) is your osm data table in Epsg:4326 projection?
>>> if so use; "init=epsg:4326" for each layer..
>>> 2) 'grey empty image'?? so you can get map from mapserver?
>>> right click on a tile and copy image location. Try the copied url, is
>>> there
>>> an error?
>>>
>>> Regards..
>>>
>>>
>>> On Tue, Mar 16, 2010 at 12:20 PM, Mulone1 <mulone at rome.com> wrote:
>>>
>>>>
>>>> (apologies for cross-posting)
>>>>
>>>> Hi everybody,
>>>> I'm trying to render openstreetmap data on a WMS on MapServer.
>>>> The system used to work with epsg:4326 but in our project we need a
>>>> GoogleMaps like projection and we chose epsg:900913.
>>>>
>>>> These are the steps I followed to reimport everything for the new
>>>> projection:
>>>>
>>>> 1) download osm xml file from Cloudmade (e.g. Italy.osm.bz2)
>>>> 2) Run 900913.sql on my PostGIS
>>>> 3) import that file into PostGIS with command:
>>>>
>>>> ./osm2pgsql -U userid -W -H host -d maps -p myprefix -S default.style
>>>> -c
>>>> -m
>>>> italy.osm.bz2
>>>>
>>>> 4) At this point everything seems ok. The geometry columns have 900913
>>>> as
>>>> SRID.
>>>> 5) update MapFile with:
>>>>
>>>> WEB
>>>> METADATA
>>>> wms_srs "epsg:900913"
>>>> ...
>>>>
>>>> PROJECTION
>>>> "init=epsg:900913"
>>>> END
>>>>
>>>> Then in each layer I put:
>>>>
>>>> PROJECTION "init=epsg:900913" END
>>>>
>>>> and all of the queries have: using srid=900913
>>>>
>>>> 6) load the wms layer into OpenLayers
>>>> with
>>>>
>>>> var wms = new OpenLayers.Layer.WMS("OpenStreetMap", mainurl, {
>>>> ...
>>>> units : 'm',
>>>> projection:new OpenLayers.Projection("EPSG:900913"),
>>>> ...
>>>>
>>>>
>>>>
>>>> Unfortunately all I get is a grey empty image. Looking at the map
>>>> server
>>>> log
>>>> I noticed that it's full of:
>>>>
>>>> [Mon Mar 15 17:49:44 2010].517000 msPostGISLayerWhichShapes query
>>>> status:
>>>> 2
>>>> [Mon Mar 15 17:49:44 2010].517000 msPostGISLayerWhichShapes got 0
>>>> records
>>>> in
>>>> result.
>>>> [Mon Mar 15 17:49:44 2010].517000 msPostGISLayerNextShape called.
>>>>
>>>>
>>>> With the other projection I was getting the records.
>>>>
>>>> Do you have any idea about what could be wrong in my set up? I tried to
>>>> debug it in several ways but I couldn't find anything wrong.
>>>>
>>>> Cheers,
>>>> Mulone
>>>> --
>>>> View this message in context:
>>>> http://old.nabble.com/OSM2pgsql%2C-OpenStreetMap%2C-MapServer%2C-EPSG%3A900913%2C-OpenLayers%3A-issue-tp27915684p27915684.html
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>>>>
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