[mapguide-users] can anyone solved this buffer problem

[padmini godavarthi]

Hi,
but i did it as per ur instruction but it didn't come 

http://n2.nabble.com/file/n2676097/over.jpeg 

my code as same as previous
 MgResourceIdentifier featSourceId = new
MgResourceIdentifier(selLayer.GetFeatureSourceId());
            MgSpatialContextReader ctxs =
featureSrvc.GetSpatialContexts(featSourceId, false);
            String srsDefDs = "";
            if (ctxs != null && ctxs.ReadNext())
      srsDefDs = ctxs.GetCoordinateSystemWkt();

in  srsDefDs i got null
does i did any thing wrong

Regards,
Padmini.



Kenneth Skovhede, GEOGRAF A/S wrote:
> 
> Yes, your FeatureSource reports an empty coordinate system, so you have 
> to specify it manually.
> 
> There is a short explanation on how to use overrides here:
> http://trac.osgeo.org/fdo/wiki/FdoGdalNotes#OverridingCoordinateSystems
> 
> Regards, Kenneth Skovhede, GEOGRAF A/S
> 
> 
> 
> padmini godavarthi skrev:
>> Hi,
>> thanks but is it necessary overriding a coordinate system????????
>> How it willbe done???????
>> can u provide me some guidance???????
>> i have seen ur link but no data available in that for overrides
>> coordinate
>> system
>>
>> http://trac.osgeo.org/mapguide/wiki/maestro/UserGuides/RasterFeatureSource
>>
>> can u plz tell me????????????
>>
>> Regards,
>> Padmini.
>>
>>
>> Kenneth Skovhede, GEOGRAF A/S wrote:
>>   
>>> No, I meant "Coordinate System Override", which is located on the 
>>> FeatureSource editor at the bottom.
>>> See screenshots here:
>>> http://trac.osgeo.org/mapguide/wiki/maestro/UserGuides/RasterFeatureSource
>>>
>>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>>
>>>
>>>
>>> padmini godavarthi skrev:
>>>     
>>>> Hi,
>>>> Thanks for ur reply 
>>>> u man to say in mapdefinition(in maestro)????????????????
>>>> iam using maestro and i have selected  the coordinate system as  
>>>>
>>>> http://n2.nabble.com/file/n2675676/coor.jpeg 
>>>>
>>>> does i did any thing wrong???????????????
>>>>
>>>> Regards,
>>>> Padmini.
>>>>
>>>>
>>>> Kenneth Skovhede, GEOGRAF A/S wrote:
>>>>   
>>>>       
>>>>> Have you tried to add a coordinate system override,
>>>>> using Maestro or Studio?
>>>>>
>>>>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>>>>
>>>>>
>>>>>
>>>>> padmini godavarthi skrev:
>>>>>     
>>>>>         
>>>>>>  Hi,
>>>>>> iam using mapguide opensource 2.0 (with .net 2.0 +IIS 5.1)
>>>>>> i want to make a buffer to my data
>>>>>> the buffer function works fine for this sheboygan data but not for my
>>>>>> data
>>>>>> i have debugged the application and i got the error at
>>>>>>
>>>>>>     MgResourceIdentifier featSourceId = new
>>>>>> MgResourceIdentifier(selLayer.GetFeatureSourceId());
>>>>>>             MgSpatialContextReader ctxs =
>>>>>> featureSrvc.GetSpatialContexts(featSourceId, false);
>>>>>>             String srsDefDs = "";
>>>>>>             if (ctxs != null && ctxs.ReadNext())
>>>>>>       srsDefDs = ctxs.GetCoordinateSystemWkt();
>>>>>>
>>>>>> In Sheboygan data  
>>>>>> srsDefDs comes as  GEOGCS["WGS84 Lat/Long's, Degrees, -180 ==>
>>>>>> +180",DATUM["D_WGS_1984",SPHEROID["World_Geodetic_System_of_1984",6378137,298.257222932867]],PRIMEM["Greenwich",0],UNIT["Degree",0.017453292519943295]]
>>>>>>
>>>>>> but for my data
>>>>>>   srsDefDs comes as null 
>>>>>>
>>>>>> Actually my data is in coordinate system 
>>>>>>
>>>>>> GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS
>>>>>> 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]
>>>>>>
>>>>>> can u plz tell me the solution????????????????????????
>>>>>>
>>>>>> plzzz
>>>>>>
>>>>>> Regards,
>>>>>> Padmini.
>>>>>>   
>>>>>>   
>>>>>>       
>>>>>>           
>>>>> _______________________________________________
>>>>> mapguide-users mailing list
>>>>> mapguide-users at lists.osgeo.org
>>>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>>>
>>>>>
>>>>>     
>>>>>         
>>>>   
>>>>       
>>> _______________________________________________
>>> mapguide-users mailing list
>>> mapguide-users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>
>>>
>>>     
>>
>>   
> 
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> 

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