ComputeProximity returns "Failure Error" about gdal HOT 6 CLOSED

https://gist.github.com/mathuin/8d346a04016cc3082637

This is a standalone test case which demonstrates the problem without bothering with my project's internals. :-)

Jack.

from gdal.

I ran the test case with CPL_DEBUG set to ON, which showed me that the error I was receiving was "user terminated". This error is thrown in several places in gdal-1.11.0/alg/gdalproximity.cpp, all related to the progress function.

    if( !pfnProgress( 0.0, "", pProgressArg ) )
    {
        CPLError( CE_Failure, CPLE_UserInterrupt, "User terminated" );
        CPLFree(panTargetValues);
        return CE_Failure;
    }

and here:

        if( !pfnProgress( 0.5 * (iLine+1) / (double) nYSize,
                          "", pProgressArg ) )
        {
            CPLError( CE_Failure, CPLE_UserInterrupt, "User terminated" );
            eErr = CE_Failure;
        }

and here:

        if( !pfnProgress( 0.5 + 0.5 * (nYSize-iLine) / (double) nYSize,
                          "", pProgressArg ) )
        {
            CPLError( CE_Failure, CPLE_UserInterrupt, "User terminated" );
            eErr = CE_Failure;
        }

I am not yet sure which of these three sections of code is throwing the error.

Also, I get the error when I use gdal.DummyProgress and when I use nil for the relevant argument in the example. Don't know if that helps.

from gdal.

Okay, the error is occurring in the first section of code. It happens when I use nil, DummyProgress, TermProgress, or ScaledProgress.

from gdal.

actually callbacks are fully not working :(

from gdal.

Now your gist works

from gdal.

Awesome! Thanks so much!

Jack.

from gdal.