[gdal-dev] Can't create feature on layer for polygon

[Hugo Benicio]

For anyone else having the same problem like mine,
I solved my issue just iterating over the wkbGeometryCollection, gathering
all polygons in it and creating a feature for the my layer for each of them.

On Mon, Oct 22, 2012 at 1:31 PM, Hugo Benicio <hbobenicio at gmail.com> wrote:

> Ok, I've discovered that myPolygon has geometryType *
> wkbGeometryCollection.*
> When I try to:
>     newDataSource->CreateLayer("test",NULL, *wkbGeometryCollection*,
> NULL);
> it fails and returns NULL.
>
> So my question now is: How do I create a wkbGeometryCollection layer (if
> possible) or how do I correctly change the geometry type of my geometry
> (from *wkbGeometryCollection *to *wkbPolygon*)?
> *
> *
> Thanks in advance,
> Hugo Benício.
>
> *
> *
> On Mon, Oct 22, 2012 at 11:24 AM, Hugo Benicio <hbobenicio at gmail.com>wrote:
>
>> Hi guys!
>>
>> I'm trying to create a shapefile containing a single polygon, but
>> unfortunately I'm facing an error that I have no clue how to solve.
>> I'm successfuly creating a datasource and a layer with:
>>
>> OGRLayer* testLayer = newDataSource->CreateLayer("test",NULL, wkbPolygon,
>> NULL);
>>
>> Then when I try to create a feature containing a *previously calculated**polygon like this:
>>
>> OGRFeature* feature =
>> OGRFeature::CreateFeature(testLayer->GetLayerDefn());
>> feature->SetGeometry(myPolygon);
>> OGRErr errorCode = testLayer->CreateFeature(feature);
>>
>> The line 'testLayer->CreateFeature(feature)' fails returning the error
>> code:
>> OGRERR_UNSUPPORTED_GEOMETRY_TYPE 3
>>
>> What am I missing here? How can I "make my geometry type supported"? Any
>> clues?
>> Maybe I have to set the geometry type somehow somewhere else (on the
>> layer or the geometry definition)... I don't know...
>>
>> *(*) *FYI, 'myPolygon' is generated with the Intersection of other 2
>> Polygons
>> OGRGeometry *myPolygon = basinPolygon->Intersection(landscapePolygon);
>>
>> Thanks in Advance,
>> Best Regards,
>> Hugo Benício.
>>
>
>
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