I am trying to write a function that generates one PDf containing plots from
several .csv files within a directory.  When I manually execute the code it
seems to work, but not when it is a function. I think I need to return()
something, but haven't had much luck figuring out what/how.

plot.isi<-function(csv.path="~/project/csv by cell") { 
        csv.files<-grep('.csv', list.files(path = csv.path, full.names=T), 
value=T)
        pdf(file='plots/isi plots.pdf', width=10, height=8)
        #par(mfrow=c(2,1)) #ideally 2 plots per page, but will work on details
after fx. works
        for (i in 1:length(csv.files)){
                raw.df<-read.csv(csv.files[i])
                names(raw.df)<-c('t','isi','logic','cond')
                xyplot(isi ~ t, raw.df, ylim=c(0,1500), ylab='isi', 
xlab='time', 
                                main=basename(csv.files[i]))
        }
        dev.off()
}

Thank you all for the help,

Jason Deignan



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