Hello,
I need help with SNAP, and basically with the Sen2Core plug (v.2.8)
I need to do BOA correction for Sentinel-2 data from level 1C to 2A
I read that it is impossible to use Sen2Core in SNAP in Graph builder to do it in Batch process for many scenes simultaneously,
You have to use Sen2Core in the command-line interpreter (eg cmd in windows). Only then can you make corrections for all scenes in the directory.
Sen2Core works for single scenes, no problem with this in my computer.
but it doesn't work for many scenes, here comes my problem.
I'm using "for / d% i in (*) for L2A_Process.bat% i"
I have the data in a simple path, i.e. C: \ snap \ S2A_MSIL1C_20170531T100031_N0205_R122_T33TTG_20170531T100536.SAFE
but I get a message that "Product metadata file cannot be read"
please help, where could the problem be, any suggestions?
and I have a question, using Sen2Core in SNAP, you can do correction for all resolutions simultaneously by selecting the Resolution: ALL option
From what I read, using Sen2Core in CMD, I can only make corrections for one resolution at a time. It is suggested that you do for 60 first, then 20 and 10m. Is it true? Can't you do it for everyone at once?
Hi Paweł,
I don´t think that batch processing is implemented in sen2cor itself. However you can use a loop in the command line of your system, be it unix-like or windows. Or you can write a short script e.g. in python in order to loop your sen2cor command over your image folder. For questions and Resources on the Sentinels and their processing i can warmly recommend the STEP Forum. I even found a thread concerning your question: https://forum.step.esa.int/t/sen2cor-in-batch-processing-with-command-line/17472/4
Sen2Cor can be also installed outside SNAP and launched independently by command line.
You can download the software from this page: http://step.esa.int/main/third-party-plugins-2/sen2cor/sen2cor_v2-8/
Concerning you last questions, nope, it can be launched in different configurations. If you set it at 10m it automatically generates also the same bands at 20m and 60m so that you have a coherent bundle of images as output.
Please keep in mind that a newer version (2.9) is about to be released.
Cheers
I think in updated version of SNAP it will automatically downloaded and installed for in use directly
Hi.
thanks for your interest and suggestions.
I had to search a little deeper on the net, and found a solution. There was some error in my formula,
correct is "for /d %s in (\S2A_MSIL1C *) do L2A_Process.bat %s"
it is important to use '%s' and spaces accordingly. I had used "%i" before, I found that example from someone but i also found "%f". I don't know where the difference comes from. Important that with "%s" it works.
And in order to do for all the scenes in the directory without having to enter the file names you have to use "*" at the end of the name "S2A_MSIL1C*"
I have a secend question now, using Sen2Cor in SNAP, you can do correction for all resolutions simultaneously by selecting the Resolution: ALL option
Using Sen2Cor in CMD, I can only make corrections for one resolution at a time. It is suggested to do for 60m first, then 20m and 10m. Is it true?
If I do "--resolution=10", will the correction be for all bands and resampling to 10m immediately?
Will the correction be performed only for 10m bands and the rest of the bands will be without correction?
Thanks for the help
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