[mapguide-users] can anyone solved this buffer problem
padmini godavarthi
godavarthi.padmini at gmail.com
Thu Apr 23 07:23:57 EDT 2009
Hi,
In my data
bool arbitraryMapSrs = (srsMap.GetType() ==
MgCoordinateSystemType.Arbitrary);
arbitraryMapSrs comes as true but in sheboygan data it comes as false
if (arbitraryMapSrs)
mapSrsUnits = srsMap.GetUnits();
In mydata mapSrsUnits comes as "meter" but in sheboygan data it comes as
null
so that
if ((arbitraryDsSrs != arbitraryMapSrs) || (arbitraryDsSrs && (dsSrsUnits
!= mapSrsUnits)))
{
excludedLayers++;
continue;
}
In my data excludedLayers comes as 1 and where as in sheboyan data this
condition fails....................
Can u plz provide me the solution?????????????
Regards,
Padmini.
Kenneth Skovhede, GEOGRAF A/S wrote:
>
> Why do you mention packages?
>
> excludedLayers is incremented because the data coordinate system is not
> the same as the map coodinate system.
>
> Please comment on what happend when you attempted my previous suggestions.
>
> Regards, Kenneth Skovhede, GEOGRAF A/S
>
>
>
> padmini godavarthi skrev:
>> Hi Kenneth,
>> Thanks for ur suggestions.
>> I have created a package using OGR provider but in the buffering i found
>> some problem that
>>
>> // exclude layer if:
>> // the map is non-arbitrary and the layer is arbitrary or
>> vice-versa
>> // or
>> // layer and map are both arbitrary but have different units
>> //
>> if ((arbitraryDsSrs != arbitraryMapSrs) || (arbitraryDsSrs &&
>> (dsSrsUnits != mapSrsUnits)))
>> {
>> excludedLayers++;
>> continue;
>> }
>> it gives difference to my data and sheboygan sample data
>> so that in my code excludedLayers is incremented to 1 so i didnt get the
>> buffer features
>> can u plz tell me the solution?????????????????
>>
>>
>> Regards,
>> Padmini.
>>
>>
>>
>>
>> Kenneth Skovhede, GEOGRAF A/S wrote:
>>
>>> I'm not sure that provider is case insensitive.
>>> Try adding the file again, but with the name "PROPERTIES.shp".
>>>
>>> Also, try creating a folder, and place the files in the folder.
>>> Then try to use the "External files" and point to the folder.
>>> Also try pointing directly to the file.
>>>
>>> When the "Test connection" is successfull, try clicking the
>>> rightmost button in the "coordinate system override" field, and
>>> it will show you what the provider returns as the coordinate system.
>>>
>>> Alternatively, try using the OGR provider instead of the SHP provider.
>>>
>>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>>
>>>
>>>
>>> padmini godavarthi skrev:
>>>
>>>> Hi Keneneth,
>>>> First of all thanks for ur patience
>>>> i have uploaded all the files but i didnt get the coordinate system
>>>>
>>>> http://n2.nabble.com/file/n2676400/file.jpeg
>>>>
>>>> again i did anything wrong??????????
>>>>
>>>> Regards,
>>>> Padmini.
>>>>
>>>>
>>>> Kenneth Skovhede, GEOGRAF A/S wrote:
>>>>
>>>>
>>>>> IIRC Shape files consist of more than just the SHP file.
>>>>> You must upload all the "Properties.*" files to the datasource,
>>>>> even if the upload file dialog is misleading (you must select "All
>>>>> files" to see them).
>>>>>
>>>>> A ticket for this problem is here.
>>>>> http://trac.osgeo.org/mapguide/ticket/783
>>>>>
>>>>> Regards, Kenneth Skovhede, GEOGRAF A/S
>>>>>
>>>>>
>>>>>
>>>>> padmini godavarthi skrev:
>>>>>
>>>>>
>>>>>> 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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>>>>>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>> _______________________________________________
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>>>>>
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>>>>
>>>>
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