R help - Feb 2010 - Interactive plot (histogram) in R..........possible?

Dear all,

I am looking for some kind of interactive plot to draw a histogram for a
normal distribution with different sample size. In that plot there would be
some sort of "scroll-bar" which will take min value 10 and maximum
value of
10,000 as sample size (n) from a standard normal distribution.

In that case user will scroll in that scroll bar and histogram with
different sample numbers will be drawn in the same plot.

Is there any function/package in R to do that? Your help will be highly
appreciated.

Thanks,
-- 
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On Feb 16, 2010, at 4:44 PM, Megh wrote:
>
> Dear all,
>
> I am looking for some kind of interactive plot to draw a histogram  
> for a
> normal distribution with different sample size. In that plot there  
> would be
> some sort of "scroll-bar" which will take min value 10 and
maximum
> value of
> 10,000 as sample size (n) from a standard normal distribution.
>
> In that case user will scroll in that scroll bar and histogram with
> different sample numbers will be drawn in the same plot.
>
> Is there any function/package in R to do that? Your help will be  
> highly
> appreciated.
>
Have you looked at TeachingDemos? It has a bunch of "tk" interactive  
stuff like that.
> Thanks,
> -- 
> View this message in context:
http://n4.nabble.com/Interactive-plot-histogram-in-R-possible-tp1557984p1557984.html
> Sent from the R help mailing list archive at Nabble.com.
>
> ______________________________________________
> 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.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT

This can be done fairly simply using the tkexamp function from the TeachingDemos
package.

Here are some examples:

library(TeachingDemos)

histfunc <- function(n, mu=0, sigma=1) {
	x <- rnorm(n, mu, sigma)
	hist(x)
}

hist.list1 <- list( n=list('slider', from=10, to=10000,
resolution=10),
	mu=list('numentry', init=0), sigma=list('numentry', init=1) )

tkexamp( histfunc, hist.list1 )

### maybe better

hist.list2 <- list( n=list('spinbox',
values=c(10,50,100,500,1000,5000,10000),
	init=10, from=10, to=10000))

tkexamp( histfunc, hist.list2 )


# another variation

x <- rnorm(10000)
histfunc2 <- function(n) {
	hist(x[seq_len(n)])
}
tkexamp( histfunc2, 
	list( n=list('slider', from=10, to=10000, resolution=10) ) )


You may want to set some of the other arguments as well.

Hope this helps,


-- 
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111

> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Megh
> Sent: Tuesday, February 16, 2010 2:44 PM
> To: r-help at r-project.org
> Subject: [R] Interactive plot (histogram) in R..........possible?
> 
> 
> Dear all,
> 
> I am looking for some kind of interactive plot to draw a histogram for
> a
> normal distribution with different sample size. In that plot there
> would be
> some sort of "scroll-bar" which will take min value 10 and
maximum
> value of
> 10,000 as sample size (n) from a standard normal distribution.
> 
> In that case user will scroll in that scroll bar and histogram with
> different sample numbers will be drawn in the same plot.
> 
> Is there any function/package in R to do that? Your help will be highly
> appreciated.
> 
> Thanks,
> --
> View this message in context: http://n4.nabble.com/Interactive-plot-
> histogram-in-R-possible-tp1557984p1557984.html
> Sent from the R help mailing list archive at Nabble.com.
> 
> ______________________________________________
> 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.