[Rpy] Quick questions on specifying data frame columns by name

2011-05-13 Thread Yang Zhang
(1) How do I get a certain data frame column by name? I.e., what's the equiv. to: mtcars$mpg? In RPy2, mtcars['mpg'] doesn't work. (2) How do I specify the equivalent of qplot(x, data=df)? qplot('x', data=df) doesn't work. Is the only way to use qplot(df[index])? Thanks in advance. -

Re: [Rpy] Seg fault with IPython

2011-05-13 Thread Yang Zhang
FWIW I tried installing ipython 10.0 and that no longer exhibits this crash. (I was on 10.0.2 before) On Wed, May 11, 2011 at 4:09 PM, Yang Zhang wrote: > On Tue, May 10, 2011 at 4:32 PM, Artur Wroblewski > wrote: >> On Wed, May 11, 2011 at 12:22 AM, Yang Zhang wrote: >>

Re: [Rpy] Seg fault with IPython

2011-05-11 Thread Yang Zhang
On Tue, May 10, 2011 at 4:32 PM, Artur Wroblewski wrote: > On Wed, May 11, 2011 at 12:22 AM, Yang Zhang wrote: >> I have R 2.13.0 installed via the CRAN Ubuntu lucid repo (installed >> packages r-base, r-base-dev, and liblapack-dev).  When I tried out >> RPy2 (either 2.1 or

[Rpy] Seg fault with IPython

2011-05-10 Thread Yang Zhang
ice.o -L/usr/lib64/R/lib -L/usr/lib64/R/modules -lR -llapack -lblas -lR -o build/lib.linux-x86_64-2.6/rpy2/rinterface/rpy_device.so Successfully installed rpy2 Cleaning up... yang@partycat Tue May 10 16:20:42 ~/pod/sales git(master) $ ipython Python 2.6.5 (r265:79063, Apr 16 2010, 13:57