[Qgis-developer] RasterFileWriter creates 5 times bigger geotiff then gdal_translate

[G. Allegri]

I haven't spot tha exact point where this happens but QGIS exports Float64,
even if the origin was Float32.

giovanni


2014-07-05 16:54 GMT+02:00 G. Allegri <giohappy at gmail.com>:

> Causally I hit the save as raster dialog, and I tried to export a raster
> to layer (coming from an ASCII Grid source) to Geotiff, with no creation
> options set.
> The result was a file 3 times bigger then the original ASCII, and 5 times
> bigger then the Geotiff created by gdal_translate.
>
> gdalinfo on the files give same results (except statistics missing from
> the one created by RasterFileWriter).
> Does gdal_translate do some optimizations that RFW doesn't?
> I wasn't aware that two Geotiffs, apparently with the same properties,
> could be so different in size...
>
> giovanni
>
> --
> Giovanni Allegri
> http://about.me/giovanniallegri
> Twitter: https://twitter.com/_giohappy_
> blog: http://blog.spaziogis.it
> GEO+ geomatica in Italia http://bit.ly/GEOplus
>



-- 
Giovanni Allegri
http://about.me/giovanniallegri
Twitter: https://twitter.com/_giohappy_
blog: http://blog.spaziogis.it
GEO+ geomatica in Italia http://bit.ly/GEOplus
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