Tom
Hi.
> i want to use R with Python and Cairo. I have the following problem:
>
> ####################
> # Python
> ####################
>>>> from rpy2 import robjects
>>>> robjects.r('library(Cairo)')
> Error in library(Cairo) : es gibt kein Paket 'Cairo'
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File "/usr/lib/python2.6/dist-packages/rpy2/robjects/__init__.py",
> line 535, in __call__
> res = self.eval(p)
> File "/usr/lib/python2.6/dist-packages/rpy2/robjects/__init__.py",
> line 422, in __call__
> res = super(RFunction, self).__call__(*new_args, **new_kwargs)
> rinterface.RRuntimeError: Error in library(Cairo) : es gibt kein Paket
> 'Cairo'
>
> ####################
> # R
> ####################
>> library(Cairo)
>>
>
>
>
> Can anybody help with this problem? My future plan is to use Python+R
> +Django to produce nice graphs with R and display the graphs within a
> website.
A question:
Why are you loading Cairo from within R (Obviously assuming R has
interface to Cairo ;-)
http://cairographics.org/pycairo/ is python binding to Cairo graphics
from _within_ Python (I'd use that if I had a choice)
I'd would try n use Rpy2/Rpy only for R-related functions/algorithms
and try to separate them. Once the calculations are done by
Rpy/Rpy2/R, then use PyCairo to display the results _in_ Python.
Regarding Django interfacing another way is to use Protovis
(http://vis.stanford.edu/protovis) to display the calculations from
Rpy2 (at the presentation/HTML layer) using Django templates.
HTH.
--
Regards,
Ishwor Gurung
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