Read FAQ 7.22 -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of qian z > Sent: Wednesday, April 23, 2008 10:49 AM > To: r-help@r-project.org > Subject: [R] pdf() and histogram() in function call > > > Here is a function I wrote. It runs no problem, but > generate empty pdf > files. > > I can't find what is the problem. > > > create.pdf<- function(x, dir) > { > dir.create(dir, showWarnings = FALSE) > plist<- c("a", "b" , "c", "d") > > for(j in plist) > { > > filedir<- paste(dir, "/", j, ".pdf", sep="") > > form1<- as.formula(paste("~ ", j, " | var1", sep=" ")) > form2<- as.formula(paste("~ ", j, " | var2", sep=" ")) > form3<- as.formula(paste("~ ", j, " | var3", sep=" ")) > pdf(filedir) > > histogram(form1,data=x,type="count", > xlab=j,main="Histogram conditioned > on the levels of var1") > histogram(form2,data=x, > type="count",xlab=j,main="Histogram conditioned > on the levels of var2") > histogram(form3, data=x, type="count", xlab=j, main="Histogram > conditioned on the levels of var3" ) > > dev.off() > } > > > } > > > I have tried to find the problem, but no luck! Seriously > need HELP! Thanks. > > _________________________________________________________________ > > Be a better friend, newshound, and know-it-all with Yahoo! > Mobile. [1]Try it > now. > > References > > 1. > http://us.rd.yahoo.com/evt=51733/*http://mobile.yahoo.com/;_yl t=Ahu06i62sR8HDtDypao8Wcj9tAcJ > ______________________________________________ > 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. > ______________________________________________ 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.