Re: [Tutor] adding numpy to pandas
Mats Wichmann wrote: > On 06/20/2018 02:04 PM, Glenn Schultz wrote: >> All, >> >> I have a pandas dataframe and a predict result (numpy array) of a >> classifier [[0,1],[1,0]]. What I would like to do is as the positive to >> the pandas dataframe. I use predict[:,1] to slice the postive from >> numpy which gives me a row of the result. but I cannot concat to the >> pandas df['result'] = predict[:,1] does not work and I have tried >> various ways to do this with no result. I am missing something here. > > You should take a look here: > > https://pandas.pydata.org/community.html > > History has indicated that the Python tutor group isn't overloaded with > Pandas experts. You may still get an answer here, but that page suggests > the preferred places from the community to interact with to get good > answers. There's also a Google Groups which doesn't seem to be > mentioned on the page: > > https://groups.google.com/forum/#!forum/pydata Regardless of the chosen forum, try to be as precise as possible with your problem description. It really can't get any worse than "does not work". I tried but failed to reproduce your problem from what little information you provide: >>> a = np.array([[0,1],[1,0]]) >>> df = pd.DataFrame([[1,2], [3,4]], columns=["a", "b"]) >>> df["result"] = a[:,1] >>> df a b result 0 1 2 1 1 3 4 0 Please take the time to read http://sscce.org/ to learn how you can improve your question. You'll be rewarded with better answers from us or by the real experts elsewhere. Thank you. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] adding numpy to pandas
On 06/20/2018 02:04 PM, Glenn Schultz wrote: > All, > > I have a pandas dataframe and a predict result (numpy array) of a > classifier [[0,1],[1,0]]. What I would like to do is as the positive to > the pandas dataframe. I use predict[:,1] to slice the postive from > numpy which gives me a row of the result. but I cannot concat to the > pandas df['result'] = predict[:,1] does not work and I have tried > various ways to do this with no result. I am missing something here. You should take a look here: https://pandas.pydata.org/community.html History has indicated that the Python tutor group isn't overloaded with Pandas experts. You may still get an answer here, but that page suggests the preferred places from the community to interact with to get good answers. There's also a Google Groups which doesn't seem to be mentioned on the page: https://groups.google.com/forum/#!forum/pydata ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
[Tutor] adding numpy to pandas
All, I have a pandas dataframe and a predict result (numpy array) of a classifier [[0,1],[1,0]]. What I would like to do is as the positive to the pandas dataframe. I use predict[:,1] to slice the postive from numpy which gives me a row of the result. but I cannot concat to the pandas df['result'] = predict[:,1] does not work and I have tried various ways to do this with no result. I am missing something here. Any help is appreciated. Glenn ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
