ldahist {MASS}  R Documentation 
Plot histograms or density plots of data on a single Fisher linear discriminant.
ldahist(data, g, nbins = 25, h, x0 =  h/1000, breaks, xlim = range(breaks), ymax = 0, width, type = c("histogram", "density", "both"), sep = (type != "density"), col = 5, xlab = deparse(substitute(data)), bty = "n", ...)
data 
vector of data. Missing values (NA s) are allowed and omitted.

g 
factor or vector giving groups, of the same length as data .

nbins 
Suggested number of bins to cover the whole range of the data. 
h 
The bin width (takes precedence over nbins ).

x0 
Shift for the bins  the breaks are at x0 + h * (..., 1, 0, 1, ...)

breaks 
The set of breakpoints to be used. (Usually omitted, takes precedence
over h and nbins ).

xlim 
The limits for the xaxis. 
ymax 
The upper limit for the yaxis. 
width 
Bandwidth for density estimates. If missing, the SheatherJones selector is used for each group separately. 
type 
Type of plot. 
sep 
Whether there is a separate plot for each group, or one combined plot. 
col 
The colour number for the bar fill. 
xlab 
label for the plot xaxis. By default, this will be the name of data .

bty 
The box type for the plot  defaults to none. 
... 
additional arguments to polygon .

Histogram and/or density plots are plotted on the current device.
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S. Fourth edition. Springer.