[R] curiousity with hist

Murad Nayal murad at godel.bioc.columbia.edu
Thu Oct 3 20:57:27 CEST 2002



Hello, 

I am rather new to R. in trying to use the hist() command I get behavior
that is somewhat puzzling me, in short, for a vector 'data' of about
2000 elements ranging from -1,1 I do:

hist(data,probability=TRUE) 

I get a histogram with the y axis ranging from 0.0 -> 6.0 at the highest
bin. This bin's relative frequency should be 0.6. this bin's raw count
is 1200 (out of about 2000 observations in the vector 'data'). so this 6
is not the raw count, probability=relative frequency or percentage. What
is it? I get the raw counts plotted correctly if I do a

hist(data)

any help/ideas would be greatly appreciated
thanks
Murad
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