> On Nov 6, 2017, at 5:45 AM, Meghna Govil <mego...@yahoo.com> wrote: > > Thanks David. Could you show me how to do that in my example ?
Possibly: kmsurvival_np <- survfit(Surv( tte, censored) ~ . , data=train1_na) I say "possibly" because I don't know whether all the columns of `train1_na` were included in the matrix you constructed. If they weren't then you would need to do something like: kmsurvival_np <- survfit(Surv( tte, censored) ~ <lots of names separated by "+"'s> , data=train1_na) The formalism of `reg_func( Y , Xm)` Where Xm is a matrix is typical for various machine-learning types of procedures, but breaks the "process-names-in-an-environment model of typical R regression functions. R regression functions often omit "step-down" options so loved by beginning SAS users. > > Thanks, > Meghna > >> On Nov 6, 2017, at 12:58 AM, David Winsemius <dwinsem...@comcast.net> wrote: >> >> You should stop trying to use matrices on the RHS and using separate vectors >> to Surv. Instead use a data argument and have the names in your formula >> refer to column names. >> >> — >> David >> >> Sent from my iPhone >> >>> On Nov 5, 2017, at 7:21 PM, Meghna Govil via R-help <r-help@r-project.org> >>> wrote: >>> >>> >>> Hi - Below is my code and then the error when I run the last line. >>> >>> time_np <- train1_na$tte >>> event_np <- train1_na$censored >>> >>> >>> X_np <- cbind( >>> train1_na$AMT, >>> train1_na$DISCOUNT_AMT, >>> train1_na$high_price_pcnt, >>> train1_na$EM_RECEIVED, >>> train1_na$DM_RECEIVED, >>> train1_na$TXN_WITH_RINGCODE, >>> train1_na$WEB, >>> train1_na$clearance_pcnt, >>> train1_na$bts_pcnt, >>> train1_na$sales_pcnt, >>> train1_na$holiday_pcnt, >>> train1_na$TXN, >>> train1_na$REDEEMED_REWARDS >>> >>> ) >>> >>> # Kaplan-Meier non-parametric analysis >>> >>> kmsurvival_np <- survfit(Surv(time_np,event_np) ~ X_np) >>> >>> Error in `[.default`(y, who, 1) : (subscript) logical subscript too long >>> >>> Any ideas? >>> I have tried several things and still get this error. >>> >>> >>> Thanks, >>> Meghna >>> >>> ______________________________________________ >>> R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>> https://stat.ethz.ch/mailman/listinfo/r-help >>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html >>> and provide commented, minimal, self-contained, reproducible code. >> > David Winsemius Alameda, CA, USA 'Any technology distinguishable from magic is insufficiently advanced.' -Gehm's Corollary to Clarke's Third Law ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
