[R] ggplot 2: Histogram with bell curve?

[William Dunlap]

> -----Original Message-----
> From: r-help-bounces at r-project.org 
> [mailto:r-help-bounces at r-project.org] On Behalf Of dicko ahmadou
> Sent: Tuesday, June 07, 2011 11:41 AM
> To: r-help at r-project.org
> Subject: Re: [R] ggplot 2: Histogram with bell curve?
> 
> Hi
> 
> Don't use t as var names, because t is also a function (transpose).
> This code should work...
> set.seed(1)
> T <- rnorm(500)

I think that it is more dangerous to use 'T' than 't' since
'T' is a built-in data name (with value TRUE) and I've
seen it used more than 't' (probably because S and S+
regard it as a reserved word).  I don't think that reusing
built-in names as local names is as dangerous as some would make
out but reusing built-in data names is probably more dangerous
than using built-in function names for local data names
(because function name lookup is done differently than general
name lookup - the former will only look for functions).

Bill Dunlap
Spotfire, TIBCO Software
wdunlap tibco.com 

> qplot(T, geom = "blank") + 
> geom_histogram(aes(y = ..density..), colour = "black", fill = 
> "blue") + 
> stat_density(geom = "line", colour = "red")
> 
> 
> 
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