[mapserver-users] Mapserver Projection Errors

[Jeff McKenna]

On 11-10-19 9:45 AM, SixDegrees wrote:
> I have a mapfile that contains several layers. Each layer has its own
> projection, given in Proj.4 format, so the projection block looks like this:
>
>     PROJECTION
>        "+proj=longlat +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +no_defs"
>     END
>
> or
>
>     PROJECTION
>        "+proj=utm +zone=39 +ellps=WGS84 +towgs84=0,0,0,0,0,0,0 +units=m
> +no_defs"
>     END
>
> These seem to display properly when served directly to a web page, or when
> loaded into QGis - in both cases as a WMS layer. But in the latter case, my
> mapserver log fills up with the error message
>
>     msProcessProjection(): Projection library error. projection not named
>
> Access directly through the website, involving a Mapserver request for a WMS
> layer, produces no errors.
>
> What is causing this? And should I be worried about it?
>

I don't have your answer, but I know I have hit issues with PROJ.4 use 
in WMS layers before (http://trac.osgeo.org/mapserver/ticket/2028), 
maybe give that discussion a read...Daniel wrote some good words of 
advice in it.

-jeff


-- 
Jeff McKenna
MapServer Consulting and Training Services
http://www.gatewaygeomatics.com/