search for: hist2

...e should be empty fields on repeated column values like ftable produces. Dieter #--------------------------------------- library(Hmisc) df = data.frame(drug=sample(c("P","V"),100,TRUE), Hist1=sample(c("Pos","Neg"),100,TRUE), Hist2=sample(c("Pos","Neg"),100,TRUE)) ftable(drug~Hist1+Hist2,data=df)

Rhelpers: I'm curious what the appropriate analysis to use for testing the hypothesis that two histograms are statistically different from one another? Thanks! --j

Dear Rusers, I would like to color different sections of a histogram different colors. I have an example that was done by "brute force" given below. Has anyone implemented something like this in general? If not, any suggestions/pointers on how to write a general function to do so would be most appreciated. Alan-