hey guys I have a panel data set that i want to perform some regressions on. I am using the /plm/ package. I defined a model in the following way:
PWBw.pool <- plm(*PWB* ~ log(*I_EQON*) + log(*RD*) + ... + *PAGRI*, data = pfem, na.action=na.exclude, model="pooling") When i run this it gives the following error (the error remains when i use other model = "" specifications like "within" or "random"): /Fehler in lm.fit(x, y, offset = offset, singular.ok = singular.ok, ...) : NA/NaN/Inf in externem Funktionsaufruf (arg 1) / The translation would be something like: /Error in lm.fit(x,y, offset = offset, singular.ok = singular.ok, ...) : NA/NaN/Inf in external fuction call (arg 1)/ This error disappears and the regression work perfectly when i remove the log() from *RD*. The log of *I_EQON* on the other hand poses no problem. I dont quite get that cause there is no difference in the variables *I_EQON* and *RD*: They have: 1.) the same number of variables 2.) both NA's so that cant be it 3.) class: "numeric" When performing /log() /on the variable *RD* simply like this (not within the plm command): log(pfem$*RD*) everything works out fine which in my opinion indicates that the problem is related to the/ plm()/ function. Anyone any advise? If u need the data to run the regression please let me know so i can send them to you personally. Thank you in advance. Manu -- View this message in context: http://r.789695.n4.nabble.com/Problems-using-log-in-a-plm-regression-tp4091377p4091377.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list 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.
