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I'm using gdal2tiles for tile huge geoTIFF image. The problem is that only 1 core cpu was being used so I stopped the process for use the -np_processes param to try use paralellism beacuse there have spent 3 days and still running... Now when I'm trying to run again the comand line for continue the tiling process, I'm using the "-e" param to resume and don't remake the tiles already created, but I'm receiving the error:

gdal2tiles.py: error: Processing of several input files is not supported. Please first use a tool like gdal_vrtmerge.py or gdal_merge.py on the files: gdal_vrtmerge.py -o merged.vrt 4

Can anybody help me?

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    Hi! welcome to GIS SE! Could you please share the command you are using? It should look similar to: gdal2tiles.py -p mercator -w all -r average -a etc..
    – RafDouglas C. Tommasi
    Commented May 29, 2019 at 15:56
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    sure, here is my command line:gdal2tiles.py -e -p geodetic -nb_processes 4 -k -v -w google image.tif TILES/
    – Neisy
    Commented May 29, 2019 at 16:11
  • Please use the edit button beneath your question to revise it with any requested clarifications.
    – PolyGeo ♦
    Commented May 30, 2019 at 8:58

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Done!!! It was all about the way I was passing the np_processes param.

The correct way is: -nb_processes=4, not nb_processes 4

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