On 8/4/07, Donatas G. <[EMAIL PROTECTED]> wrote: > I have a data.frame with ~100 columns and I need a barplot for each column > produced and saved in some directory. > > I am not sure it is possible - so please help me. > > this is my loop that does not work... > > vars <- list (substitute (G01_01), substitute (G01_02), substitute (G01_03), > substitute (G01_04)) > results <- data.frame ('Variable Name'=rep (NA, length (vars)), > check.names=FALSE) > for (i in 1:length (vars)) { > barplot(table(i),xlab=i,ylab="NuomonÄ—s") > dev.copy(png, filename="/my/dir/barplot.i.png", height=600, width=600) > dev.off() > } > > questions: > > Is it possible to use the i somewhere _within_ a file name? (like it is > possible in other programming or scripting languages?)
(Yes, but) Why are you using dev.copy? See ?png, in particular how the ``page number'' can be encoded in the 'filename' argument for multi-page output. -Deepayan ______________________________________________ R-help@stat.math.ethz.ch 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.