I do it a bit differently:
Once you've got myhist, you can plot a line on the existing histogram
plot with something like:
smoo<-spline(myhist$breaks[1:length(myhist$breaks)-1],myhist$counts)
lines(smoo$x,smoo$y,col='green')
You'll have to muck a bit with scale factors to make the spline curve
"match up" with the histogram plot's actual x-axis values.
(actually, that snippet is part of my conversion from histogram data to
a bar chart that "looks" like a histogram, with the spline curve overlaid).
Carl
try something like this:
x <- rnorm(200)
hist(x, col = "blue", freq = FALSE)
lines(density(x), col = "red", lwd = 2)
I hope it helps.
Best,
Dimitris
>
> Currently I have a density plot generated with this
> snippet.
>
> Is there a way I can add a line curve on top of it?
> I mean in one figure
>
>
> __BEGIN__
> myhist <- hist(x
> col="blue",
> main = "Density Plot",
> xlab = "Exp Level",
> )
> __END__
>
>
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