[maplab-users] Error of Projection Object in MapBrowser

[Paul Spencer]

Hi,

it could also be a problem with the specific epsg file that you 
downloaded.  The standard epsg file only contains codes up to a certain 
value (32766 I think).  The tutorial map file has an Lambert Conic 
Conformal (LCC) projection for Canada that is not in the standard epsg 
file.  It's code is 42101 or 42304 (there are a couple that you may 
actually have).  To get the tutorial file to work directly, you need to 
add the following lines to the epsg file:

##
## Custom projection codes
##
## WGS84 / LCC Canada
<42101> +proj=lcc +ellps=WGS84 +lat_0=0 +lon_0=-95 +lat_1=49 +lat_2=77 
+x_0=0 +y_0=-8000000.0 +datum=WGS84 +units=m no_defs <>
## NAD83 / BC Albers
<42102> +proj=aea +ellps=GRS80 +lat_0=45 +lon_0=-126.0 +lat_1=50.0 
+lat_2=58.5 +x_0=1000000.0 +y_0=0 +datum=NAD83 +units=m no_defs <>
#
## NAD83 LCC for Canada
<42304> +proj=lcc +ellps=GRS80 +lat_0=49 +lon_0=-95 +lat_1=49 +lat_2=77 
+datum=NAD83 +units=m no_defs <>

or you can download a modified epsg file that contains these codes from:

http://www2.dmsolutions.ca/mapserver/dl/proj4-epsg-with-42xxx.zip

Cheers,

Paul

Yewondwossen Assefa wrote:
> Hi There,
> 
>  From your message, It seems that you are on a wondows platform. Some 
> files in the Proj libaraires need to be compiled for a win32 platform. 
> If tou need precompiled binaries, there is on our download site a proj4 
> libarary built for windows that you can use 
> (http://www2.dmsolutions.ca/mapserver/dl/proj4_win32.zip).
> 
> Later,
> 
> ¦¿©v®i wrote:
> 
>> Kent Chiang wrote: Hello! Dear List! Me too encount some problem in 
>> the Mapbrowser's section of Maplab tutorialI followed the instruction 
>> of the tutorial, created a projection object in Mapeditand then 
>> save.When I return to Mapbrowser, i received the following 
>> error *Warning*: MapServer Error in msProcessProjection(): no options 
>> found in 'init' file in 
>> *D:\Apache2\htdocs\maplab-2.0rc2\common\wrapper\map_session.php* on 
>> line *271*
>>
>> *Fatal error*: Failed to open map file c:/msapps/tutorial/mymap.map in 
>> *D:\Apache2\htdocs\maplab-2.0rc2\common\wrapper\map_session.php* on 
>> line *271*I've downloaded the epsg' and retrieved it into the folder 
>> C:\projand still can't resolved the problem. Could you teach this 
>> reason? Best Regards!!!  
>>
> -- 
> ----------------------------------------------------------------
> Assefa Yewondwossen
> Software Analyst
> 
> Email: assefa@dmsolutions.ca
> http://www.dmsolutions.ca/
> 
> Phone: (613) 565-5056 (ext 14)
> Fax:   (613) 565-0925
> ----------------------------------------------------------------
>  
> 

-- 
Paul Spencer
Applications and Software Development
DM Solutions Group Inc.
http://www.dmsolutions.ca