How to draw KDE over Histogram Plot

Question

I just plotted a histogram on R for some data, following:

hist(Y1, breaks=30)

I don't know how to draw a Kernel density estimate plot smoothly over the histogram plot.

All suggestion appreciated

`v <- rchisq(1000, 2); hist(v, prob=T); lines(density(v))`? – lukeA Jan 06 '14 at 15:03 — lukeA, Jan 06 '14 at 15:03

score 2 · Accepted Answer · answered Jan 06 '14 at 15:04

2

You need freq = FALSE in hist.

set.seed(1)
Y1 <- rgamma(100, 10, 3)

hist(Y1, breaks = 30, freq = FALSE)
dens <- density(Y1)
lines(dens)

enter image description here

answered Jan 06 '14 at 15:04

Sven Hohenstein

Thank You, so kind of you!! that was the answer I was exactly looking for... Best wishes .... – user3149762 Jan 07 '14 at 08:09

1 Answers1