[mapserver-users] Error Message in WMS service

[Jan Hartmann]

No, that doesn't work. It's an OpenLayers application, so the WMS 
request automatically computes an extent in excess of the screen. The 
second solution is really a bit of a kludge, don't you think so? :-)

I use another kludge: handle the complete WMS request via PHP Mapscript: 
return a an XML file for a GetCapabilities request, and an image for 
everything else (http://mapserver.org/ogc/mapscript.html). This will not 
cover the complete WMS protocol, but works fine for simple map requests, 
both in OpenLayers, ArcGIS, MapInfo and QGis. And it gives me at least 
complete control over error handling, with GD-produced error images at 
the right position. It's the only way I am aware of to produce WMS 
output that can be debugged easily.

Jan

On 8-4-2011 16:34, Lime, Steve D (DNR) wrote:
> Or limit the size of the WMS request to the viewport size (ratio:1). I would think that would be desirable regardless IMHO. Other option is to generate longer error messages with really long layer names. ;-)
>
> Steve
>
> -----Original Message-----
> From: Jan Hartmann [mailto:j.l.h.hartmann at uva.nl]
> Sent: Friday, April 08, 2011 9:31 AM
> To: Lime, Steve D (DNR)
> Cc: mapserver-users at lists.osgeo.org
> Subject: Re: [mapserver-users] Error Message in WMS service
>
> OK, that means that I have to create an error image the size of the WMS
> request and position the message in the middle, with some combination of
> PHP Mapscript and PHP/GD. Doable.
>
> Thanks,
>
> Jan
>
> On 8-4-2011 16:27, Lime, Steve D (DNR) wrote:
>> Looking at the code it's always in the same place, so no...
>>
>> Steve
>>
>> -----Original Message-----
>> From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Jan Hartmann
>> Sent: Friday, April 08, 2011 9:21 AM
>> To: mapserver-users at lists.osgeo.org
>> Subject: [mapserver-users] Error Message in WMS service
>>
>> Hi folks, just a beginner's question:
>>
>> Is it possible to position the image-error message of a WMS request in
>> the middle of the image? Normally it is placed in the upper left corner,
>> and with OpenLayers (overlaid over Google Maps) the message is displayed
>> on a tile outside the visual screen.
>>
>> Jan
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>>
>