[gdal-dev] gdal2tiles error

[Grégory Bataille]

Hello,

In your stack trace I gather you are using GDAL 1?
If that's the case, you should use the latest gdal 2.2). I'm quite sure the
issue is fixed there

On a mac, look for the osgeo4mac brew tap and install the gdal2 package. I
think it's up-to-date. Otherwise you should retrieve gdal2tiles.py from our
github mirror.

On Wed, 23 Aug 2017 at 23:04, MUTLU OZDOGAN <ozdogan at wisc.edu> wrote:

> Dear developers,
>
> I have an 8-bit geotiff image that contains land cover classification
> results.  The dimensions of the image is 1000 x 1000 pixels.  I am trying
> to generate tiles with 21 zoom levels using the gdal2tiles.py script so
> that we can display the results on a website.  In the first step, I
> converted the single band paletted image into color composite with the
> correct class colors using this command:
>
> gdal_translate -of vrt -expand rgba results.tif temp.vrt
>
> and in the second step I used the gdal2tiles.py script in the following
> way but I am getting errors:
>
> gdal2tiles.py -p raster -z 0-20 -a 3 -v temp.vrt sample
>
> the error is below.
>
> Any help in explaining and solving this issue would be much appreciated.
>
> Thank you
>
> Mutlu..
>
>
> ('Input file:', '( 1000P x 1000L - 4 bands)')
> NODATA: [3.0, 3.0, 3.0, 3.0]
> ('Preprocessed file:', '( 1000P x 1000L - 4 bands)')
> KML autotest OK!
> ('Bounds (output srs):', -96.08910285, 42.692523704760006,
> -95.81960826476, 42.96201829)
> ('Native zoom of the raster:', 2)
> Generating Base Tiles:
>
> Tiles generated from the max zoom level:
> ----------------------------------------
>
> ('dataBandsCount: ', 3)
> ('tilebands: ', 4)
> (1, '/', 1048576000000, 'sample/20/0/1023999.png')
> ('\tReadRaster Extent: ', (0, -1023000, 1, 1), (0, 0, 256, 256))
> ERROR 5: temp.vrt: Access window out of range in RasterIO().  Requested
> (0,-1023000) of size 1x1 on raster of 1000x1000.
> ERROR 5: temp.vrt, band 4: Access window out of range in RasterIO().
> Requested
> (0,-1023000) of size 1x1 on raster of 1000x1000.
> Traceback (most recent call last):
>   File
> "/Library/Frameworks/GDAL.framework/Versions/Current/Programs/gdal2tiles.py",
> line 2278, in <module>
>     gdal2tiles.process()
>   File
> "/Library/Frameworks/GDAL.framework/Versions/Current/Programs/gdal2tiles.py",
> line 488, in process
>     self.generate_base_tiles()
>   File
> "/Library/Frameworks/GDAL.framework/Versions/Current/Programs/gdal2tiles.py",
> line 1276, in generate_base_tiles
>     dstile.WriteRaster(wx, wy, wxsize, wysize, data,
> band_list=list(range(1,self.dataBandsCount+1)))
>   File
> "/Library/Frameworks/GDAL.framework/Versions/1.11/Python/2.7/site-packages/osgeo/gdal.py",
> line 846, in WriteRaster
>     buf_pixel_space, buf_line_space, buf_band_space )
> TypeError: not a string
>
>
>
>
> --
>
> Mutlu Ozdogan, Ph.D.
> Associate Professor
> Department of Forest and Wildlife Ecology &
> Nelson Institute for Environmental Studies
> t: (608) 262-0873
> e: ozdogan at wisc.edu
>
>
>
>
>
> _______________________________________________
> gdal-dev mailing list
> gdal-dev at lists.osgeo.org
> https://lists.osgeo.org/mailman/listinfo/gdal-dev

-- 
Greg
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