[gdal-dev] gdal_merge

[Even Rouault]

Clive,

CPL_VSIL_USE_TEMP_FILE_FOR_RANDOM_WRITE is a configuration option / 
environment variable, so you have to pass it with --config 
CPL_VSIL_USE_TEMP_FILE_FOR_RANDOM_WRITE YES

Even

Le 29/11/2022 à 20:12, Clive Swan a écrit :
> Greetings,
>
> I am trying to select band 1 and then use gdal_merge to merge two tiff 
> files in an AWS bucket.
> Getting odd errors.
>
> gdal_merge.py -o 
> /vsis3/summer-outputs/3_dataupdated/rcp26-2020-coastal_flood-NA-false.tif 
> /vsis3/summer-outputs/3_data_ready_for_spectra/coastal-undefended-rcp26-2020.tif 
>  /vsis3/summer-outputs/5_UK_prod_rasters/coastal-undefended-rcp26-2020.tif 
>  -of GTiff  -co -b 1  -co CPL_VSIL_USE_TEMP_FILE_FOR_RANDOM_WRITE=YES 
> -co NUM_THREADS=ALL_CPUS --config AWS_ACCESS_KEY_ID KEY_ID --config 
> AWS_SECRET_ACCESS_KEY ACCESS_KEY
>
> ERRORS
>   `1' not recognized as a supported file format. << band 1
> Warning 6: creation option '-b' is not formatted with the key=value 
> format << band 1
> Warning 6: *driver GTiff does not support creation option 
> *CPL_VSIL_USE_TEMP_FILE_FOR_RANDOM_WRITE << Get an error if leave this out
> ERROR 1: *w+ not supported for /vsis3, unless* 
> CPL_VSIL_USE_TEMP_FILE_FOR_RANDOM_WRITE is set to YES             << 
> Get an error
> ERROR 4: Attempt to create new tiff file 
> `/vsis3/summer-outputs/3_data_ready/updated/rcp26-2020-coastal_flood-NA-false.tif' 
> failed: *Permission denied  << *added the security key, etc
> *Creation failed, terminating gdal_merge.*
>
> -- 
>
>  Regards,
>
>
> Clive Swan
>
> --
>
>
>
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