change a property in `/etc/snap.properties` via pyroSAR about pyrosar HOT 5 CLOSED

I realize now that the suggested file is probably only about the pyroSAR configuration, and not the SNAP configuration.. So, ignoring my misdirected attempt above my question still stands: Is it possible to set a SNAP parameter (e.g. in file snap/etc/snap.properties) via pyroSAR?

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gpt_args can be used for this, i.e. gpt(..., gpt_args = ['snap.userdir=/my/path'].

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Hi @jonathom. At the moment pyroSAR is not making best use of these SNAP configuration files. True, this Examine functionality handles pyroSAR-specific configuration files and the ones from SNAP are mostly ignored. It would a larger effort to use and modify them. Good that you have discovered the gpt_args parameter.

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Thanks @johntruckenbrodt, I see now that it isn't necessary to change the config files when I can really pass all needed params via the call. Just needed to figure out how ;) So, a note for future reference:

• here's a list of SNAP parameters that can be set
• gpt tells you to append these parameters with -D of you want to set them so this is what you need to do for gpt_args as well: "-D<name>=<value> Defines a system property for this invocation." (from gpt command help)
• if you wanna set args that concers the java vm, i.e. parameters from gpt.properties, e.g. -Xmx, append -J, see here
• all in all, this is the gpt call I ended up with: gpt(<out_filename>, groups = groups, gpt_args = ['-Dsnap.userdir=.', '-J-Xmx4G'])

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awesome, thanks @jonathom

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