[mapguide-users] Problem with coordinate system - buffer

Kenneth Skovhede, GEOGRAF A/S ks at geograf.dk
Sun Oct 19 04:56:20 EDT 2008

I have now experimented with the data you sent.
I can see that the SHP provider is not picking up the coordinate system 
for your data.
I made a coordinate system override on your SHP data, and selected the 
same coordinate
system for both the map and featuresource.
After that I can buffer the features as expected.

I will send you a package by direct email containing the sample setup.

Regards, Kenneth Skovhede, GEOGRAF A/S

sergi nistal skrev:
> Hi,
> I have created the ticket 720 in trac.osgeo.org/mapguide. I saw that 
> another people had a similar problem 
> ('http://www.mail-archive.com/mapguide-users@lists.osgeo.org/msg06520.html'). 
> Too, when I load the 'layerDefinition' (that is, for example when I 
> open 'MyProject'/Basemap/Layers/espacios, espacios is a layer that I 
> created with files espacios.shp, espacios.shx, espacios.dbf, 
> espacios.sbn and espacios.sbx) in webstudio 
> (http://localhost/mapguide/webstudio/index.html), in the section 
> 'Preview' appears the next message 'Resource was not found: 
> Session:0aed6aa0-0000-1000-8002-cccccccccccc_en_7F0000010AFC0AFB0AFA//PFCMapGuide2/Basemap/Layers/espacios.LayerDefinition 
> Exception occurred in method MgResourceDefinitionManager.GetDocument 
> at line 476 in file 
> c:\mapguide2\mapguide-2.0.1\server\src\services\resource\ResourceDefinitionManager.cpp'. 
> My coordinate system is epsg: 23030, I have converted to wkt with 
> webstudio (PROJCS['ED50 / UTM zone 
> 30N',GEOGCS['ED50',DATUM['European_Datum_1950',SPHEROID['International 
> 1924',6378388,297,AUTHORITY['EPSG','7022']],AUTHORITY['EPSG','6230']],PRIMEM['Greenwich',0,AUTHORITY['EPSG','8901']],UNIT['degree',0.01745329251994328,AUTHORITY['EPSG','9122']],AUTHORITY['EPSG','4230']],PROJECTION['Transverse_Mercator'],PARAMETER['latitude_of_origin',0],PARAMETER['central_meridian',-3],PARAMETER['scale_factor',0.9996],PARAMETER['false_easting',500000],PARAMETER['false_northing',0],UNIT['metre',1,AUTHORITY['EPSG','9001']],AUTHORITY['EPSG','23030']]) 
> and I put this coordinate system in files: 
> 'MyProject'/Basemap/BasemapLoad, 'MyProject'/Maps/'MyProject Tiled' 
> and 'MyProject'/Maps/'MyProject'.
> The problem is when I create a buffer the next message appears and the 
> buffer isn´t created: 'Buffer 1 has been created. 0 buffer feature was 
> created.
> Warning:1 layers were excluded from buffer computation because their 
> coordinate systems are incompatible with the coordinate system of the 
> map, or because they have no coordinate system at all'.
> Do I need put the coordinate system in other files? Can anyone help me?
> Thanks
> Sergio
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