[gdal-dev] Introducing the cogger and godal projects

[Sean Gillies]

Hi Thomas,

Congratulations! These look like great projects.

On Fri, Jun 4, 2021 at 4:07 AM thomas bonfort <thomas.bonfort at gmail.com>
wrote:

> 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
>

I'm very interested in "a vsi abstraction that hands off i/o to native
golang code".

-- 
Sean Gillies
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