Thanks for the details of this feature, I wanted all values been treated equally. I now achieved this through hist(1:4, br=0:4,include.lowest=F) quote:
hist(1:4) always merges up the first two columns,
Why is that wierd? You requested three bins and that's what you got. (If you didn't know you had done that, please read the help page.)
In the help pages I could not find this; the default bin number algorithm nclass.Sturges gives for 1:3 3 bins as a result, but hist(1:3) draws 4.