Re: [R] Creating histograms from factors using a for loop

You could plot both histograms into the same file using this: library(lattice) jpeg(filename="combined.jpeg") histogram(~d|f, data = df) dev.off() Schalk Heunis On Sat, Sep 19, 2009 at 11:37 AM, Sam Player wrote: > # I have a dataframe with data and factors similar to the following: > > a <- r

Re: [R] Creating histograms from factors using a for loop

On Sep 19, 2009, at 5:37 AM, Sam Player wrote: # I have a dataframe with data and factors similar to the following: a <- rep(c("a", "b"), c(6,6)) df <- data.frame(f=a, d=rnorm(12)) df # I am trying to write a 'for' loop which will produce a jpeg histogram for each factor. I can individually

Re: [R] Creating histograms from factors using a for loop

Sam, Your loop produces two jpegs but the second overwrites the first. What do you expect levels(df[i,"f"]) to produce? (Think about it.) Try jpeg(filename=paste(i,".jpg",sep="")) and you may want to fix the titles as well. Peter Sam Player wrote: # I have a dataframe with data and fac