[gdal-dev] File Size Output is wrong --

[Javier Jimenez Shaw]

gdalinfo of the three files (two inputs and one output) may help to
understand better the conditions.
One option is that file A is not compressed, while the output is LZW.
.___ ._ ..._ .. . ._.  .___ .. __ . _. . __..  ... .... ._ .__
Entre dos pensamientos racionales
hay infinitos pensamientos irracionales.



On Mon, 12 Dec 2022 at 17:47, Clive Swan <cliveswan at gmail.com> wrote:

> Greetings,
>
> I am writing the output on the local AWS Instance to avoid write
> permissions error, then copying to a Bucket.
> I get an error message if I leave out --config GDAL_SWATH_SIZE 1000000
>
> I want to merge File A into File B, updating the 6GB file. The output is
> 622MB NOT 6GB??
> (A) /vsis3/summer/1/coastal-2020.tif  = 6GB
> (B) /vsis3/summer/2/coastal-2020.tif  = 622MB
>
> Is this wrong??
> (A)                                                    (B)
> gdalbuildvrt -o /data/coastal-2020.vrt /vsis3/summer/1/coastal-2020.tif /
> vsis3/summer/2/coastal-2020.tif
>
> The output in /data/coastal-2020.tif should be 6GB
> gdal_translate /data/coastal-2020.vrt /data/coastal-2020.tif -co
> BIGTIFF=YES -co COMPRESS=LZW -  -co NUM_THREADS=ALL_CPUS --config
> CPL_VSIL_USE_TEMP_FILE_FOR_RANDOM_WRITE YES  --config GDAL_SWATH_SIZE
> 1000000
> ##--config AWS_ACCESS_KEY_ID            set in ./config
> ##--config AWS_SECRET_ACCESS_KEY set in ./config
>
> --
>
>  Regards,
>
>
> Clive Swan
>
> --
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>
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