[gdal-dev] regular grid longlat netcdf without crs meta

[Michael Sumner]

Hi,

these files don't present to GDAL with a CRS, but it seems not out of place
to assume that they can use 'oSRS.SetWellKnownGeogCS("WGS84")', when no
other indication is found and there are dimensions 'lon,lat' or
'longitude,latitude'

https://www.ncei.noaa.gov/data/sea-surface-temperature-optimum-interpolation/v2.1/access/avhrr/

An example sds specifically:

/vsicurl/NETCDF:"/vsicurl/
https://www.ncei.noaa.gov/data/sea-surface-temperature-optimum-interpolation/v2.1/access/avhrr/202202/oisst-avhrr-v02r01.20220201.nc
":sst

Would that be reasonable? Perhaps controlled by an env var? Is there an
established control for this I'm missing? (I'm not looking for '-a_srs' or
VRT, I want the auto-detection to work for these and many other
similar file sources without augmentation).

(It's not out of the question that I could submit a PR for this, just
flagging discussion in case I'm missing something.)

Thanks.

Best, Mike


-- 
Michael Sumner
Software and Database Engineer
Australian Antarctic Division
Hobart, Australia
e-mail: mdsumner at gmail.com
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