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Full_Name: Dennis Walvoort Version: 2.6.2 OS: MS Windows XP Submission from: (NULL) (137.224.252.10) I've encountered a problem when extracting vector elements by a factor. Let's create a (named) character vector v: i <- 1:10 v <- letters[i] names(v) <- i Let iInt, iChr, and iFac denote integer, character, and factor indices respectively: iInt <- i iChr <- as.character(i) iFac <- factor(iChr) Now, consider the following tests: all.equal(v, v[iInt]) # TRUE all.equal(v, v[iChr]) # TRUE all.equal(v, v[iFac]) # FALSE all.equal(v, v[as.character(iFac)]) # T...

...m(y ~ s(x,6) + z,data=gam.data) plot(gam.object,se=TRUE)" Thank you. Brad. Dr. Guicheng (Brad) Zhang Senior Research Officer School of Paediatrics and Child Health Telethon Institute for Child Health Research 100 Roberts Road, Subiaco Western Australia, 6008 AUSTRALIA Email: Bradz@ichr.uwa.edu.au Phone: 93407896 Fax: 93882097 [[alternative HTML version deleted]]

...+ Start2, data=temp) plot(fit1) text(fit1, use.n=TRUE, digits=5) Thanks Dr Rebecca O'Leary, PhD Biostatistician Senior Research Officer UWA Centre for Child Health Research Telethon Institute for Child Health Research, 100 Roberts Rd, Subiaco Perth WA 6008 Australia Email: roleary@ichr.uwa.edu.au Tel: +61-8-9489 7745 Fax: +61-8-9489 7700 ##################################################################################### This e-mail message has been scanned for Viruses and Content and cleared by MailMarshal ###################################################################...