[Mapserver-users] blank image--white empty image box

[Daniel Morissette]

Could it be that there are two PROJECTION blocks in one of your layers 
or at the top level in your mapfile?  Duplicate PROJECTION definitions 
is the only way I can imagine to trigger that assertion failure.

Daniel


don wrote:
> ye i got line like that 
> libproj.so.0 => /usr/local/lib/libproj.so.0
> (0x404eee000)
> --- Joe Bussell <joe at otsys.com> wrote:
> 
>>I wonder if you have proj4 compiled in with
>>Mapserver.  Could you type 
>>ldd /path/to/mapscript.so 
>>I am wondering if a line like 
>>libproj.so.0 => /usr/local/lib/libproj.so.0
>>(0x401cf000)
>>will show up.
>>
>>Joe Bussell
>>
>>
>>don wrote:
>>
>>>thanks very much for the pointers but after adding
>>>below lines, every thing now is wierd
>>> 
>>>PROJECTION
>>>    "proj=latlong" (i have even tried "utm")
>>> END
>>>
>>>Server error!
>>>
>>>The server encountered an internal error and was
>>>unable to complete your request.
>>>
>>>    Error message:
>>>Premature end of script headers: mapserv 
>>>
>>>httpd log:
>>>
>>>[Sat Oct 18 10:07:09 2003] [error] [client
>>>192.168.30.200] Premature end of script headers:
>>>mapserv
>>>[Sat Oct 18 10:07:09 2003] [error] [client
>>>192.168.30.200] mapserv: mapfile.c:790:
>>>msProcessProjection: Assertion `p->proj == ((void
>>>*)0)' failed.
>>>[Sat Oct 18 10:38:26 2003] [error] [client
>>>192.168.30.200] Premature end of script headers:
>>>mapserv
>>>[Sat Oct 18 10:38:26 2003] [error] [client
>>>192.168.30.200] mapserv: mapfile.c:790:
>>>msProcessProjection: Assertion `p->proj == ((void
>>>*)0)' failed.
>>>
>>>
>>>--- Joe Bussell <joe at otsys.com> wrote:
>>>
>>>
>>>>Looks like TestRegion is the only layer that you
>>>>have turned on.  Is this your intent?
>>>>
>>>>Try using a straight in-line layer like:
>>>>
>>>>LAYER
>>>>  name     background
>>>>   TYPE    polygon
>>>>   STATUS ON
>>>>   CLASS
>>>>       NAME "World"
>>>>       OUTLINECOLOR    0 0 0
>>>>       COLOR    30 144 255
>>>>       SIZE    1
>>>>       SYMBOL  0
>>>>   END
>>>>
>>>>   FEATURE
>>>>       POINTS 
>>>>           -180 90 
>>>>           -180 -90 
>>>>           180 -90
>>>>           180 90
>>>>           -180 90 
>>>>       END
>>>>   END
>>>>END
>>>>
>>>>My points are in lat/lon.  I notice that in your
>>>>mapfile you are specifiing meters.  You will have
>>
>>to
>>
>>>>adjust the range accordingly.  I use 
>>>>
>>>>PROJECTION
>>>>   "proj=latlong"
>>>>END
>>>>
>>>>as all my data is in lat/lon.  I do not see a
>>>>projection declaration in your mapfile.  
>>>>
>>>>You are also declaring a shapepath of "data".  To
>>
>>be
>>
>>>>honest I am unsure what the result of this will
>>
>>be. 
>>
>>>>Is this path supposed to be absolute?  Try setting
>>>>it to the absolute path of your test_region.shp
>>>>directory.
>>>>
>>>>Don't give up now, you are halfway there...
>>>>
>>>>Cordially,
>>>>
>>>>Joe Bussell
>>>>www.TrafficDodger.com
>>>
>>>
>>>
>>>=====
>>>don
>>>