[mapserver-users] Tilemode Projection Problem

Dan Little danlittle at yahoo.com
Thu Jan 7 09:30:06 EST 2010


It's in the "share/proj" directory... but that will depend on where proj is installed... could be /usr /usr/local /opt /opt/local ... or if you're me ... /opt/mapserver/ (primarily because I'm anal and isolate the crap out of things).

>
>From: Ian Dees <ian.dees at gmail.com>
>To: "Fawcett, David (MPCA)" <David.Fawcett at state.mn.us>
>Cc: "mapserver-users at lists.osgeo.org" <mapserver-users at lists.osgeo.org>
>Sent: Thu, January 7, 2010 8:22:12 AM
>Subject: Re: [mapserver-users] Tilemode Projection Problem
>
>>After getting all the projection sections into my .map file without any correctly-drawn tiles, I've given up on tilemode for now and am trying out tilecache with MapServer's WMS. However, it appears that EPSG:900913 is not known in my system. On a Linux install, where is the list of projections/WKT?
>
>I've tried using upper and lower-case namespace (epsg and EPSG) to no avail.
>
>I get the following error through tilecache when it attempts to hit my WMS:
>
><ServiceExceptionReport version="1.1.1">
>
><ServiceException code="InvalidSRS">
>msWMSLoadGetMapParams(): WMS server error. Invalid SRS given : SRS must be valid for all requested layers.
>
></ServiceException>
></ServiceExceptionReport>
>URL it tries:
>http://209.98.160.119:8080/cgi-bin/mapserv?map=/var/www/map/map.map&layers=states&styles=&service=WMS&width=256&format=image%2Fpng&request=GetMap&height=256&srs=EPSG%3A900913&version=1.1.1&bbox=-20037508.34%2C-20037508.34%2C20037508.3384%2C20037508.3384
>
>
>On Wed, Jan 6, 2010 at 2:56 PM, Ian Dees <ian.dees at gmail.com> wrote:
>
>I tried this and am still not getting anything from my TIFFs. I switched over to using the statesp020.shp data (which is epsg:4326, right?) and am getting very oddly-garbled tiles:
>>
>>http://209.98.160.119:8080/map.html
>>
>>
>>On Wed, Jan 6, 2010 at 2:41 PM, Fawcett, David (MPCA) <David.Fawcett at state.mn.us> wrote:
>>
>>>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>>>>
>>>>>>
>>>Ian, 
>>> 
>>>I haven’t used tilemode, but my assumption is that the map
>>>projection block is used to define what the output projection for your tile is
>>>(like in the other MapServer modes).  
>>> 
>>>Try setting map projection to epsg:3785 or using the proj4 text:
>>> 
>>>+proj=merc
>>>+lon_0=0 +k=1 +x_0=0 +y_0=0 +a=6378137 +b=6378137 +towgs84=0,0,0,0,0,0,0
>>>+units=m +no_defs 
>>> 
>>>If tilemode requires a map extent, it should be expressed in
>>>units of the output projection.
>>> 
>>>David.
>>> 
>>>>>>
>>>From:mapserver-users-bounces at lists.osgeo.org >>>[mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Ian Dees
>>>Sent: Wednesday, January 06, 2010 2:24 PM
>>>To: mapserver-users at lists.osgeo.org
>>>Subject: [mapserver-users] Tilemode Projection Problem
>>>>>>
>>> 
>>>Hi everyone,
>>>
>>>>>>I've spent the better part of today scouring the internet for documentation and
>>>help on the tile mode present in mapserver, but I couldn't find an answer to my
>>>problem, so please forgive me if I'm missing some obvious documentation some
>>>where...
>>>
>>>>>>I am attempting to show some GeoTIFFs (from here: ftp://geoftp.ibge.gov.br/mapas/ortofoto/).
>>>My research says they're in epsg:31984.
>>>
>>>>>>I'm trying to use MapServer's tile mode to display them on a Google Map API
>>>instance, but can't seem to get any of the images to show up.
>>>
>>>>>>Also, why am I required to give a PROJECTION statement as a child to the MAP
>>>statement (what I assume is the "viewing projection") if the tile mode
>>>is just going to reproject to spherical mercator?
>>>
>>>>>>My .map file is below.
>>>
>>>>>>Thanks!
>>>
>>>>>>MAP
>>>>>>        NAME GMAP_TILE
>>>>>>        STATUS ON
>>>
>>>>>>        PROJECTION
>>>"init=epsg:31984" END
>>>
>>>>>>        IMAGECOLOR 192 192 192
>>>>>>        IMAGEQUALITY 95
>>>>>>        IMAGETYPE png
>>>
>>>>>>        OUTPUTFORMAT
>>>>>>               
>>>NAME png
>>>>>>               
>>>DRIVER 'GD/PNG'
>>>>>>               
>>>TRANSPARENT ON
>>>>>>        END
>>>
>>>>>>        LAYER  
>>>>>>               
>>>NAME brazil
>>>>>>               
>>>TYPE raster
>>>>>>               
>>>DATA "/var/www/map/2414-1-SO.tif"
>>>>>>               
>>>STATUS ON
>>>>>>               
>>>PROJECTION "init=epsg:31984" END
>>>>>>        END
>>>>>>END
>>
>


      
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