Gurus / Fellow enthusiasts,
I am using rpy2 to access R functions in python. And having problems with calling a function called 'seas' which resides in R's "seasonal" package. (via jupyter notebook on windows 10)
ts_r = robjects.r('ts')
input_5 = ts_r(series.values, frequency=12, start=2001)
is_ts_r(input_5) # get TRUE for this function which checks for 'ts' object
seas_r = robjects.r('seas')
model = seas_r(input_5) # this line gives **ERROR**
In order to test the correct package installation I did the following test and it was successful.
output_r = robjects.r('seas(AirPassengers)') # can view output for air passenger data (pre-defined in R)
I did another test to check for the 'ts' object generated in python. I called another function called 'stl' in R's "stats" package thats uses 'ts' object and it works.
stl_r = robjects.r('stl')
output_model_stl = stl_r(input_5, "periodic") # ** THIS WORKS**
I have included the error below for better readability. Would appreciate any suggestions for debugging the problem.
model = seas_r(input_5)
R[write to console]: Error in align_x_list(x, list) :
all(sapply(x, inherits, "ts")) is not TRUE
---------------------------------------------------------------------------
RRuntimeError Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_25148/2372710267.py in <module>
----> 1 model = seas_r(input_5)
c:\python39\lib\site-packages\rpy2\robjects\functions.py in __call__(self, *args, **kwargs)
196 v = kwargs.pop(k)
197 kwargs[r_k] = v
--> 198 return (super(SignatureTranslatedFunction, self)
199 .__call__(*args, **kwargs))
200
c:\python39\lib\site-packages\rpy2\robjects\functions.py in __call__(self, *args, **kwargs)
123 else:
124 new_kwargs[k] = conversion.py2rpy(v)
--> 125 res = super(Function, self).__call__(*new_args, **new_kwargs)
126 res = conversion.rpy2py(res)
127 return res
c:\python39\lib\site-packages\rpy2\rinterface_lib\conversion.py in _(*args, **kwargs)
43 def _cdata_res_to_rinterface(function):
44 def _(*args, **kwargs):
---> 45 cdata = function(*args, **kwargs)
46 # TODO: test cdata is of the expected CType
47 return _cdata_to_rinterface(cdata)
c:\python39\lib\site-packages\rpy2\rinterface.py in __call__(self, *args, **kwargs)
678 )
679 if error_occured[0]:
--> 680 raise embedded.RRuntimeError(_rinterface._geterrmessage())
681 return res
682
RRuntimeError: Error in align_x_list(x, list) :
all(sapply(x, inherits, "ts")) is not TRUE