> On Sep 3, 2016, at 8:05 PM, Tamar Michaeli <tmichaeli...@gmail.com> wrote: > > Any help in resolving the following errors will be appreciated: > >> pollutantmean <- function(directory, pollutant, id=1:332) > + file_inc <- list.files("specdata", full.names=TRUE) >> dat <- data.frame() >> for(i in 1:10) { > + dat <- rbind(dat, read.csv(file_inc[i])) > + } > Error in read.table(file = file, header = header, sep = sep, quote = quote, > : > object 'file_inc' not found >> sulfate <- subset(dat( , 2)) > Error in subset(dat(, 2)) : could not find function "dat" >> nitrate <- subset(dat( , 3)) > Error in subset(dat(, 3)) : could not find function "dat" >> mean(pollutant) > Error in mean(pollutant) : object 'pollutant' not found >> save"pollutantmean.R" > Error: unexpected string constant in " save"pollutantmean.R""
This is pretty clearly an effort at solving a homework problem for Peng's R Coursera course. Homework questions are off-topic on Rhelp (and are not really encouraged on StackOverflow but you can probably find a worked example there by searching on " [r] pollutant list.files specdata".) When I tried out the course a few years ago the the participants were advised to post their questions at a website established for the course. -- David. > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > 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 -- To UNSUBSCRIBE and more, see 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.