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2009 Sep 19
3
Creating histograms from factors using a for loop
# 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 isolate the data from a factor and
produce a jpeg histogram like so:
fnc <- function(x){
x <-