Thank you very much for your help !
I 'm trying to use the package "rPithon" but I obtain this error
message:
> if (pithon.available())
+ {
+ nRow <-50
+ nCol <-50
+ h <- 0.75
+
+ # this file contains the definition of function concat
+ pithon.load("C:/Users/Anaconda2/Lib/site-packages/nlmpy/nlmpy.py")
+ pithon.call( "mpd", nRow, nCol, h)
+
+ } else {
+ print("Unable to execute python")
+ }
Show Traceback
Rerun with Debug
Error in pithon.get("_r_call_return", instance.name = instname) :
Couldn't retrieve variable: Traceback (most recent call last):
File
"C:/Users/Documents/R/win-library/3.3/rPithon/pythonwrapperscript.py",
line 110, in <module>
reallyReallyLongAndUnnecessaryPrefix.data =
json.dumps([eval(reallyReallyLongAndUnnecessaryPrefix.argData)])
File "C:\Users\ANACON~1\lib\json\__init__.py", line 244, in dumps
return _default_encoder.encode(obj)
File "C:\Users\ANACON~1\lib\json\encoder.py", line 207, in encode
chunks = self.iterencode(o, _one_shot=True)
File "C:\Users\ANACON~1\lib\json\encoder.py", line 270, in
iterencode
return _iterencode(o, 0)
File "C:\Users\ANACON~1\lib\json\encoder.py", line 184, in default
raise TypeError(repr(o) + " is not JSON serializable")
TypeError: array([[ 0.36534654, 0.31962481, 0.44229946, ..., 0.11513079,
0.07156331, 0.00286971],
[ 0.41534291, 0.41333479, 0.48118995, ..., 0.19203674,
0.04192771, 0.03679473],
[ 0.5188
Nell
________________________________
De : Wensui Liu <liuwensui at gmail.com>
Envoy? : mercredi 16 novembre 2016 16:00:03
? : Nelly Reduan
Cc : r-help at r-project.org
Objet : Re: [R] Run a Python code from R
take a look at rpython or rPithon package
On Wed, Nov 16, 2016 at 4:53 PM, Nelly Reduan <nell.redu at hotmail.fr>
wrote:> Hello,
>
>
> How can I run this Python code from R ?
>
>
>>>> import nlmpy
>>>> nlm = nlmpy.mpd(nRow=50, nCol=50, h=0.75)
>>>> nlmpy.exportASCIIGrid("raster.asc", nlm)
>
>
> Nlmpy is a Python package to build neutral landscape models
>
> https://pypi.python.org/pypi/nlmpy . The example comes from this website. I
tried to use the function system2 but I don't know how to use it.
>
>
> path_script_python <-
"C:/Users/Anaconda2/Lib/site-packages/nlmpy/nlmpy.py"
>
> test <- system2("python", args = c(path_script_python,
as.character(nRow), as.character(nCol), as.character(h)))
>
> Thanks a lot for your help.
> Nell
>
>
> nlmpy 0.1.3 : Python Package
Index<https://pypi.python.org/pypi/nlmpy>
> pypi.python.org
> NLMpy. NLMpy is a Python package for the creation of neutral landscape
models that are widely used in the modelling of ecological patterns and
processes across ...
>
>
>
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>
> ______________________________________________
> R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see
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> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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