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Hi All, What do you consider to be the best book(reference) on nonparametric regression? I am currently reading the book of Kunio Takezawa(2006): "Introduction to nonparametric regression". Is the book of Hardle(1990): "Applied nonparametric regression" better? or maybe another book? This is off topic, but most of the books is using R or S-plus. Thanks Hennie

Hi all, I'm using R2.0 on linux. I have fixedwidth data consisting of 50 questions on a likert scale. The raw data is coded 1 to 5. I used read.fwf() to read in the data. The problem is that factors isn't created automatically, because the data is coded numerically. To make factors out of the 50 questions I must do: V1 <- factor(V1) I don't want to do it 50 times. Is there a

Hi All, I want to select a level of a factor variable from a dataset. I have the folowing data: dataset: use factor: month (use$month, levels=February, July) > use[1:5,] month registration use department size 1 February KKG151GP Y Safety 1.6 To select February I tried: > use[use$month=="February"] Error in "[.data.frame"(use, use$month ==