[mapserver-users] gap between layers

[Jean-Paul Chiron]

2008/7/15 Frank Warmerdam <warmerdam at pobox.com>:
> Jean-Paul Chiron wrote:
>>
>> Hello,
>> when I've migrate one mapserver application from a server to another,
>> with the same version of software ( mapserver 4.6.1 ), I've a big gap
>> between the base map (which is based on .shp file) et the layers which
>> are based on postgis.
>>
>> The problem cannot came from postgis, because it's the same database
>> between the two servers.
>>
>> I was thinking that it comes from GDAL, but I didn't see anything...
>>
>> Is there anybody have an idear for that problem ?
>> Where can I investigate to find the mistake ?
>
> Jean-Paul,
>
> Is there reprojection involved?  Datum shifting?  Perhaps it relates
> to a different version of PROJ.4 or difficulty finding datum shift files?
> There has been a significant change in the how PROJ.4 decides when a
> change of datum shift should be applied between PROJ 4.5 and 4.6.
>
> These are angles I'd look into a bit if I were you.

Well done Franck !
There was a mistake on the new server between  proj-4.4.9 and proj-4.5.0
It works with proj-4.5.0.

Thank you !