Thanks for the quick response. But the points I'm trying to superimpose
isn't exactly the density of the data. Is there any other way to do it?

 

From: milton ruser [mailto:milton.ruser@gmail.com] 
Sent: July 5, 2008 6:56 AM
To: Edwin Lei
Cc: r-help@r-project.org
Subject: Re: [R] trying to superimpose a line plot onto a histogram

 

How about the answer by Demitris?

 

Regards a lot,

 

miltinho

----

From: Dimitris Rizopoulos <dimitris.rizopoulos@med.kuleuven.be>
Date: Jun 16, 2008 4:05 AM
Subject: Re: [R] Superimposing Line over Histogram in Density Plot
To: Gundala Viswanath <gundalav@gmail.com>
Cc: r-help@stat.math.ethz.ch

try something like this:

x <- rnorm(200)
hist(x, col = "blue", freq = FALSE)
lines(density(x), col = "red", lwd = 2)




 

On 7/5/08, Edwin Lei <unlucky24@hotmail.com> wrote: 

Hello,

I'm trying to superimpose a line plot onto a histogram but I'm not having
any luck. I've attached the dataset. What I did was:

> hist(data,freq=F)

Now I'm trying to superimpose the following points with a line connecting
them onto the histogram:

x            y
100  0.535665393824959
200  0.212744329736556
300  0.0844933242968584
400  0.0335572838043417
500  0.0133275771274986
600  0.00529316714442912
700  0.0021022289461042
800  0.000834919136549392
900  0.000331595645597124
1000 0.000131696193518099
1100 5.2304327929049e-05
1200 2.07731343406939e-05

Basically, the x values correspond to the break points in the histogram.
Next I used the command

> points(x,y,type="l")

But for some reason, the line plot is shifted to the right and doesn't line
up with the histogram.

Thanks for the help!

Edwin Lei

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