On 2011-05-23 21:31, Rekha wrote:
S . Am getting error still now if i use both version of the codes .

i have to call any library?

Your code works fine for me, too, as it should.
Have you perhaps redefined the hist() function?
Do you get a histogram?
The error you quote would result if you called lines() without
opening a graphics device.

Peter Ehlers


On Tue, May 24, 2011 at 9:22 AM, Steve Lianoglou<
mailinglist.honey...@gmail.com>  wrote:

Hi,

On Mon, May 23, 2011 at 11:41 PM, Rekha<chithralekh...@gmail.com>  wrote:
Hello All,*

*I want to draw a histogram with density curve. *

*For that simply i created a data called*"x" *and i used the function
called
*    hist(x, col = "blue", freq = FALSE),**   *from this function i got a
histogram*.

*After that , i tried this function*  ** lines(density(x), col = "red",
lwd
= 2  )  *but i could not get the density curve.

So, Again i used  other function*    curve(dnorm, col = 2, add = TRUE)**
*instead of the previous function for density curve.

but still am getting error in R  like this:

  Error in plot.xy(xy.coords(x, y), type = type, ...)
  plot.new has not been called yet"


*  I have used below codes to have a data and histogram with density
curve"

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

You should use the code above.

I don't get it though -- this is working fine for me. Are you getting
the "plot.new" error for both versions of your code?

Although I feel like in 99% of the time this won't be necessary, but
what happens if you call `plot.new()` before your call to hist?

eg:

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

Does that work? If not -- what if you use `dev.new()` in place of
`plot.new()`?

-steve

--
Steve Lianoglou
Graduate Student: Computational Systems Biology
  | Memorial Sloan-Kettering Cancer Center
  | Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact





______________________________________________
R-help@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.

Reply via email to