[gdal-dev] Introducing the cogger and godal projects

Even Rouault even.rouault at spatialys.com
Fri Jun 4 05:28:42 PDT 2021

Hi Thomas,

cogger is really cool, and certainly a useful complement to the GDAL COG 
driver (we could probably do something similar in it directly, if the 
input file is a TIFF, but that doesn't fit in a very natural way in the 
GDAL machinery). Feel free to submit a PR to the COG driver doc pointing 
to cogger.

Same against https://gdal.org/api/index.html#gdal-ogr-in-other-languages 
regarding your golang wrapper.


Le 04/06/2021 à 12:07, thomas bonfort a écrit :
> Hello gdal,
> We're releasing two projects on github under an Apache-2.0 licence
> which may be of interest to the GDAL community.
> The first one, https://github.com/airbusgeo/cogger is a lightweight
> geotiff to COG converter that reshuffles the bytes of a tiled geotiff
> to make it cloud compatible. Whereas it does not replace the standard
> gdal tools for initially creating a geotiff, it is much faster than
> the last "-co COPY_SRC_OVERVIEWS=YES" classical gdal_translate method
> for outputting a cog, and also allows more flexibility when varying
> compression methods or tile sizes need to applied on overviews. Cogger
> can be used as a standalone command line tool, or as a go library
> function for interacting with remote storage without the need for
> local files.
> The second one, https://github.com/airbusgeo/godal is a golang wrapper
> for GDAL's raster api. While there is an already established golang
> wrapper for gdal that exists (https://github.com/lukeroth/gdal), godal
> differs by offering:
> - robust error handling and reporting
> - a stable compatible api promise (to the extent of what is possible
> to achieve given gdal's own api)
> - a vsi abstraction that hands off i/o to native golang code
> - a more user-friendly API that is not an exact mirror of the gdal
> api, making lesser used functionality optional. (For example, instead
> of the GDALOpen, GDALOpenEx and GDALOpenShared methods, godal exposes
> a single Open() method with optional arguments validated at compile
> time to pass in open options, shared mode, sibling files, etc...)
> Although the raster handling side of godal is mostly feature complete
> with gdal, the vector and spatial-referencing part is not.
> Outside contributions to both these projects are welcome through github.
> Best regards,
> Thomas
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My software is free, but my time generally not.

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