[gdal-dev] OGRLayer.Intersection() question

[Tamas Szekeres]

Dheeraj,

I don't think the OSGeo.OGR.Layer.Intersection supports progress
notification. You might probably have encountered a bug which should be
fixed. Do you have a sample code to reproduce this issue? I would
specifically interested in the actual geometries have been passed to the
function.

Best regards,

Tamas



2013/10/10 Dheeraj Reddy Mamidi <drmamidi at rothwellgroup.com>

> Hi list,
>
> I have troubles with C# bindings of OGR. I was trying to perform
> intersection on two feature classes (shape file formats) using
> OSGeo.OGR.Layer.Intersection(), but have problems making it work. I keep
> getting an error saying "AccessViolationException was unhandled.
> Attempted to read or write protected memory. This is often an indication
> that other memory is corrupt.
>
> Is the above error something to do with SWIGTYPE_p_GDALProgressFunc
> callback and OSGeo.OGR.SWIGTYPE_p_void callback_data arguments? I tried
> passing those parameters null as suggested by some in the forums but I
> keep getting the error "Attempt to dereference null GDALProgressFunc". I
> am not sure what that means.
>
> And when I instantiate callback as new SWIGTYPE_p_GDALProgressFunc() and
> new callback_data as new SWIGTYPE_p_void(), I don't get error Attempt to dereference
> null GDALProgressFunc, but still have error saying AccessViolationException
> was unhandled. Attempted to read or write protected memory. This is often
> an indication that other memory is corrupt.
>
> Can someone please help me figure this out and let me know how to make use
> of OSGeo.OGR.Layer.Intersection() in the right way with c# bindings.
> Thank you.
>
> Thanks,
> Dheeraj
>
>
>
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