[R] multhist,labels and percentages

[Federico Calboli]

Hi All,

I am in the annoying position of having to present some data to someone who seems to be somewhat less than numerate. I need to label the y-axes of a multhist with the y-axis labeled not as counts but as percentage of a population. Plotting the standard histogram is in a way fine, all I need is to:

-- have a left-handside y-axis labels for pop 1 and a right-handside y-axis labels for pop2
-- replace the counts in each axis with population percentages (easy to calculate, but how to stick them there?)

Any suggestion would be gratefully received.

F


--
Federico C. F. Calboli
Department of Epidemiology and Biostatistics
Imperial College, St. Mary's Campus
Norfolk Place, London W2 1PG

Tel +44 (0)20 75941602   Fax +44 (0)20 75943193

f.calboli [.a.t] imperial.ac.uk
f.calboli [.a.t] gmail.com