[GRASS-dev] Forestfrag WARNING: ZSTD compression error -14: Unsupported frame parameter

[Paulo van Breugel]

On Tue, May 28, 2019 at 5:30 PM Vaclav Petras <wenzeslaus at gmail.com> wrote:

>
>
> On Mon, May 27, 2019 at 3:25 PM Paulo van Breugel <p.vanbreugel at gmail.com>
> wrote:
>
>> Hi Václav / devs
>>
>> I am running r.forestfrag in Windows 10, grass 7.6.2 Computation with a
>> moving window size of 21 (but at another computer same happens at size 9)
>> gives met the following error:
>> C:\Users\brp\AppData\Roaming\GRASS7\addons/scripts/r.forestfrag.py
>> input=groenreclass at landschap output=AAtest7 size=21
>> Step 1: Computing Pf values...
>> Step 2: Computing Pff values...
>>
>
> Some computations happened, but then something went wrong.
>

It goes wrong when with the moving window computation using r.mapcalc. But
when (e.g., with what moving window size) differs depending on the computer
and the size of the raster.


>
>> WARNING: ZSTD compression error -14: Unsupported frame parameter
>> ERROR: Error uncompressing raster data for row 328 of
>> <tmpA04_398bad3c_32a8_4220_8566_374c8c9f16a8>
>>
>
> Something wrong with the libraries or the files (perhaps not enough space
> on disk?).
>

I guess something with the files, as it works with smaller moving windows
and it works in Linux.


>
>
>> WARNING: No data base element files found
>>
>
> Probably, g.remove trying to clean something as the the script is exiting.
> Likely harmless.
>

Ah, ok


>
>> Traceback (most recent call last):
>>   File "C:\Users\brp\AppData\Roaming\GRASS7\addons/scripts/
>> r.forestfrag.py", line 420, in <module>     sys.exit(main(*gs.parser()))
>>   File "C:\Users\brp\AppData\Roaming\GRASS7\addons/scripts/
>> r.forestfrag.py", line 290, in main     ipl=ipl, tmpl4=expr1,
>> tmpl5=expr2, pff=pff)
>>   File
>> "C:\OSGEO4~1\apps\grass\grass76\etc\python\grass\script\raster.py", line
>> 111, in mapcalc " with expression: %s") % e)
>>   File "C:\OSGEO4~1\apps\grass\grass76\etc\python\grass\script\core.py",
>> line 667, in fatal error(msg)
>>   File "C:\OSGEO4~1\apps\grass\grass76\etc\python\grass\script\core.py",
>> line 651, in error    message(msg, flag='e')
>>   File "C:\OSGEO4~1\apps\grass\grass76\etc\python\grass\script\core.py",
>> line 584, in message     run_command("g.message", flags=flag, message=msg,
>> errors='ignore')
>>
>
> Here, it is g.message failing, so at this point nothing works.
>
>
>>   File "C:\OSGEO4~1\apps\grass\grass76\etc\python\grass\script\core.py",
>> line 415, in run_command ps = start_command(*args, **kwargs)
>>   File "C:\OSGEO4~1\apps\grass\grass76\etc\python\grass\script\core.py",
>> line 382, in start_command
>>     return Popen(args, **popts)
>>   File "C:\OSGEO4~1\apps\grass\grass76\etc\python\grass\script\core.py",
>> line 76, in __init__     subprocess.Popen.__init__(self, args, **kwargs)
>>   File "C:\OSGEO4~1\apps\Python27\lib\subprocess.py", line 390, in
>> __init__ errread, errwrite)
>>   File "C:\OSGEO4~1\apps\Python27\lib\subprocess.py", line 640, in
>> _execute_child startupinfo)
>> WindowsError: [Error 206] De bestandsnaam of -extensie is te lang
>>
>
> Too many open files? Or maybe just the error message happens to be too
> long.
>
>
>> Any idea what may be the problem here?
>>
>
> Try smaller region, smaller window. Look into task manager. ...
>

I did try a smaller region, this does seem to make a difference. I will try
if I can do this more systematically.


>
> Best,
> Vaclav
>
>
>>
>> Greetings,
>>
>> Paulo
>>
>
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