[gdal-dev] Read data without reading 'null data'

[Even Rouault]

On Monday 06 June 2016 02:23:24 jramm wrote:
> This is my mistake.
> I had not truly created a sparse raster! I keep forgetting that the gdal
> tools (gdal_translate) will still write the sparse blocks and the sparse
> creation option is just to indicate that FillEmptyBlocks should be skipped.
> Creating the sparse file by hand correctly sets the block metadata.
> 
> I can see that BLOCK_SIZE_{0}_{1} will return the size in bytes, or null.
> What is interesting then is that if the raster isnt sparse (As in the first
> example), BLOCK_SIZE_{0}_{1} appears to be returning garbage...

Your code didn't go through your email.

In https://svn.osgeo.org/gdal/trunk/autotest/gcore/tiff_read.py , you can find 
in tiff_read_tiff_metadata() examples of reading BLOCK_SIZE_ on non-sparse files.

> 
> 
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