Hi Michael, There is no output as the model does not generate any coefficients and simply throws this error.
I hope you are not asking for a reproducible example. On Fri, Aug 12, 2016 at 7:30 PM, Michael Dewey <[email protected]> wrote: > Dear Shivi > > Can you show us the output? > > And please do not post in HTML as it will mangle your post into > unreadability. > > On 12/08/2016 10:10, Shivi Bhatia wrote: > >> Hi Team, >> >> I am creating *my first* Logistic regression on R Studio. I am working on >> a >> >> C-SAT data where rating (score) 0-8 is a dis-sat whereas 9-10 are SAT. As >> these were in numeric form so i had as below created 2 classes: >> >> new$survey[new$score>=0 & new$score<=8]<- 0 >> new$survey[new$score>=9]<- 1 >> This works fine however the class still shows as "numeric" and levels >> shows >> as "NULL". Do i still need to use "as.factor" to let R know these are >> categorical variables. >> >> Also i have used the below code to run a logistic regression with all the >> possible predictor variables: >> glm.fit= glm(survey ~ support_cat + region+ support_lvl+ skill_group+ >> application_area+ functional_area+ >> repS+ case_age+ case_status+ severity_level+ >> sla_status+ delivery_segmentation, data = SFDC, family = >> binomial) >> >> But it throws an error:- >> Warning messages: >> 1: glm.fit: algorithm did not converge >> 2: glm.fit: fitted probabilities numerically 0 or 1 occurred >> >> I checked online for the error and it says: >> "glm() uses an iterative re-weighted least squares algorithm. The >> algorithm >> hit the maximum number of allowed iterations before signalling >> convergence. >> The default, >> documented in ?glm.control is 25." >> >> Kindly suggest on the above case and if i have to change my outcome var as >> as.factor. >> >> Thank you, Shivi >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> [email protected] 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/posti >> ng-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> >> > -- > Michael > http://www.dewey.myzen.co.uk/home.html > [[alternative HTML version deleted]] ______________________________________________ [email protected] 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.
