[Gdal-dev] Implementing GDALRasterBand::IRasterIO

[James Gallagher]

Hi,

I would like to add sub-sampling capabilities to the OPeNDAP/GDAL
driver. To do this I plan on specializing GDALRasterBand::IRasterIO(). 

First question: is that method the correct place to implement
sub-sampling?

Second question: I noticed that the OGDI driver implemented only the
GDALRasterBand::IRasterIO method while the ECW driver implemented it's
own version of both that and GDALDataset:IRasterIO. What are the
implications of specializing the second method?

Thanks,
James
-- 
__________________________________________________________________________
James Gallagher		         The Distributed Oceanographic Data System
jgallagher at gso.uri.edu               http://unidata.ucar.edu/packages/dods
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