[R] trying to superimpose a line plot onto a histogram

[Edwin Lei]

Okay I've included a picture of the plot I've been getting with the commands:

> hist(data,freq=F)
> lines(Y~X)

Basically I want the line circled in red to overlap the histogram because that line is supposed to represent the exponential decay nature of the histogram.

Thanks!

> -----Original Message-----
> From: markleeds at verizon.net [mailto:markleeds at verizon.net]
> Sent: July 5, 2008 10:22 PM
> To: Edwin Lei
> Subject: RE: [R] trying to superimpose a line plot onto a histogram
> 
>   i'm no R expert but if you send EXACTLY what you want to do to the
> list, i bet someone can help. if not tomorrow, then i bet some
> one wil respond on monday.
> 
> 
> 
> On Sun, Jul 6, 2008 at  1:07 AM, Edwin Lei wrote:
> 
> > I tried that, but for some reason the scale is wrong? So the density
> > doesn't show up on the histogram.  Also, I'd prefer not to use the
> > density because I don't want the line plot to begin at a value of 0.
> > I'm trying to emulate an exponential decay.
> >
> > Thanks for the help.
> >
> >> -----Original Message-----
> >> From: markleeds at verizon.net [mailto:markleeds at verizon.net]
> >> Sent: July 5, 2008 8:43 PM
> >> To: Edwin Lei
> >> Subject: Re: [R] trying to superimpose a line plot onto a histogram
> >>
> >>
> >> hi: you can do the same thing as below but just replace density(x)
> >> with
> >> whatever you want to plot ?
> >>
> >>
> >> On Sat, Jul 5, 2008 at  4:29 PM, Edwin Lei wrote:
> >>
> >>> 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 at gmail.com] Sent: July 5,
> >>> 2008
> >>> 6:56 AM
> >>> To: Edwin Lei
> >>> Cc: r-help at 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 at med.kuleuven.be>
> >>> Date: Jun 16, 2008 4:05 AM
> >>> Subject: Re: [R] Superimposing Line over Histogram in Density Plot
> >>> To: Gundala Viswanath <gundalav at gmail.com>
> >>> Cc: r-help at 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 at 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
> >>>
> >>> ______________________________________________
> >>> R-help at r-project.org mailing list
> >>>
> >>> PLEASE do read the posting guide
> >>> http://www.R-project.org/posting-guide.html
> >>> and provide commented, minimal, self-contained, reproducible code.
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> 	[[alternative HTML version deleted]]
> >>>
> >>> ______________________________________________
> >>> R-help at r-project.org mailing list
> >>> https://stat.ethz.ch/mailman/listinfo/r-help
> >>> PLEASE do read the posting guide
> >>> http://www.R-project.org/posting-guide.html
> >>> and provide commented, minimal, self-contained, reproducible code.