Andrew,
Data type conversion is done by GDALCopyWords[64]:
https://gdal.org/api/raster_c_api.html#_CPPv415GDALCopyWords64PKv12GDALDataTypeiPv12GDALDataTypei10GPtrDiff_t
The doc was a bit outdated, regarding conversion from floating point
data types to integer data types. I've just adjusted it in
https://github.com/OSGeo/gdal/commit/139e891b9b4a7b928c66e3daef83361fa530e6ac
Website should be refreshed soon
Even
Le 20/05/2024 à 17:01, Andrew Bell via gdal-dev a écrit :
Hi,
The documentation for GDALRasterBand::RasterIO says that it will
convert data from the source data type to the destination data type. I
searched the source code a bit I'm not sure I located the bit that
does this conversion. I'm trying to understand what happens in this
conversion process. Is this a numeric conversion as would be done with
a C/C++ cast or is this conversion simply add or truncate bytes in
order to fit in a destination data type. Or perhaps something else?
Thanks,
--
Andrew Bell
andrew.bell...@gmail.com
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