Embed R code in python

Question

I need to make computations in a python program, and I would prefer to make some of them in R. Is it possible to embed R code in python ?

Answer 1

You should take a look at rpy (link to documentation here).

This allows you to do:

from rpy import *

And then you can use the object called r to do computations just like you would do in R.

Here is an example extracted from the doc:

>>> from rpy import *
>>>
>>> degrees = 4
>>> grid = r.seq(0, 10, length=100)
>>> values = [r.dchisq(x, degrees) for x in grid]
>>> r.par(ann=0)
>>> r.plot(grid, values, type=’lines’)

Answer 2

RPy is your friend for this type of thing.

The scipy, numpy and matplotlib packages all do simular things to R and are very complete, but if you want to mix the languages RPy is the way to go!

from rpy2.robjects import *

def main(): 
    degrees = 4 
    grid = r.seq(0, 10, length=100) 
    values = [r.dchisq(x, degrees) for x in grid] 
    r.par(ann=0) 
    r.plot(grid, values, type='l') 

if __name__ == '__main__': 
     main()