WMS Capabilities: LatLonBoundingBox

[Bart van den Eijnden (OSGIS)]

Hi Arnaud,

the reason is probably that it costs performance to go through the 
projection layer.

For some things, like the simple demo, projection is not necessary (all 
layers are shown unprojected), but for WMS it is necessary.

I think it could be a good idea to have a warning in the WMS 
GetCapabilities response that no projection was defined for the layer.

Best regards,
Bart

Arnaud Diederen wrote:

> Hi Angus,
>
> I'm not using PostGIS layers; this is the Itasca demo for mapserver 
> 4.x, and putting the PROJECTION param fixes it, indeed!
> I wonder why it is not put (uncommented, actually) in the vanilla demo 
> package. Is there a reason?
>
> Thank you very much for the information!
>
> Best regards,
>
>           Arnaud
>
> Angus Dickey wrote:
>
>> I am having a similar problem. Apparently Mapserver will 
>> automatically calculate the bounding box if you define it using epsg 
>> codes in the map file ex:
>>
>> PROJECTION
>>  "init=epsg:4269"
>> END
>>
>> This works for me when I use shapefiles, i.e. it calculates the 
>> correct bounding box in the right coordinates, however all my Postgis 
>> layers end up with a bounding box of:
>>
>> minx="-2.5e+07" miny="-2.5e+07" maxx="2.5e+07" maxy="2.5e+07"
>>
>> Are youusing postgis layers? Does anybody know how to get mapserver 
>> to calculate the correct bounding box for postgis layers?
>>
>> Thanks for any help,
>>
>> ~Angus
>>
>>
>> -----Original Message-----
>> From: Arnaud Diederen [mailto:ad at IONICSOFT.COM] Sent: June 15, 2006 
>> 7:17 AM
>> To: MAPSERVER-USERS at LISTS.UMN.EDU
>> Subject: [UMN_MAPSERVER-USERS] WMS Capabilities: LatLonBoundingBox
>>
>> Hello,
>>
>> I'm absolutely new to mapserver, so I downloaded the demo for the 4.x 
>> version (I'm using Debian GNU/Linux).
>> The demo pages work ok, but when I do a GetCapabilities operation 
>> (http://localhost/cgi-bin/mapserv?service=WMS&version=1.3&map=/var/www/workshop/itasca.map&request=GetCapabilities 
>> - local intranet, sorry :( ), I get the attached XML document.
>> What I'm wondering is why the LatLonBoundingBox tags holds those 
>> values, since they are supposed to be in 4326, if I read the WMS spec 
>> right.
>>
>> Am I doing something wrong?
>>
>> I looked the archives, and googled the internet, but I couldn't find 
>> any help on this exact topic.
>> I would definitely appreciate if somebody could provide any kind of 
>> help; would it be just pointers on what I have to do/fix.
>>
>> Best regards,
>>
>>         Arnaud
>>  
>>
>
>


-- 
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl