I'm using R in python with rpy2. I have a dataframe with some columns in it and I want to add additional one.
As far as I understand I, in R I would write something like this:
df$new_colname <- cumsum(df$oldcolname)
But how can I translate this to rpy2?
I tried many variations of this:
ipdb> d.rx2('cum_misses') <- ro.r.cumsum(d.rx2('misses')) *** Newest frame
But always get this:
ipdb> p d.rx2('cum_misses') rpy2.rinterface.NULL