histogram(haerdle) | R Documentation |
computes and plots a histogram
histogram(data, h, x0, plot.type=T, ...)
data |
a vector of data |
h |
bin width |
x0 |
start of first bin |
plot.type |
If TRUE, plot the histogram |
... |
further options to barplot |
If plot.type=F, a list of midpoint and est, the heights.
`Smoothing Techniques with Implementation in S', Wolfgang Haerdle, Springer, 1991
hist
, frequency.polygon
, histogram.normal.ref
data(buffalo) # Figure 1.9 histogram(buffalo,10,0) # Figure 1.16 par(mfrow=c(3,2)) histogram(buffalo,10,0) histogram(buffalo,10,2) histogram(buffalo,10,4) histogram(buffalo,10,6) histogram(buffalo,10,8) grid <- 1+seq(20,138,2) est<-numeric(length(grid)) for(i in seq(0,8,2)){ cw <- histogram(buffalo,10,i,FALSE) est <- est+cw[[2]][(grid-i)%/%10]/5 } barplot(est,grid[-1]-grid[-length(grid)],space=0,ylim=c(0,max(est))) box()