R version 2.11.1 (2010-05-31)
Copyright (C) 2010 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> .help.ESS <- help
> options(STERM='iESS', editor='emacsclient')
> mns09 <- replicate(10000, mean(rexp(9)))
> library(ggplot2)
Loading required package: reshape
Loading required package: plyr
Loading required package: grid
Loading required package: proto
> qplot(mns09, geom="density")
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> df <- do.call(data.frame(lapply(c(9,16,25,36), function(n)replicate(10000,mean(rexp(n))))))
Error in is.list(args) : 'args' is missing
> str(lapply(c(9,16,25,36), function(n)replicate(10000,mean(rexp(n))))
+ )
List of 4
 $ : num [1:10000] 1.25 1.26 1.26 1.23 1.12 ...
 $ : num [1:10000] 1.065 1.375 1.241 0.933 1.272 ...
 $ : num [1:10000] 0.805 0.892 1.282 0.566 1.029 ...
 $ : num [1:10000] 1.14 1.004 0.92 1.132 0.674 ...
> df <- do.call(data.frame,lapply(c(9,16,25,36), function(n)replicate(10000,mean(rexp(n)))))
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> fr <- melt(df, id=NULL, variable="sampleSize")
> str(fr)
'data.frame':	40000 obs. of  2 variables:
 $ sampleSize: Factor w/ 4 levels "c.1.29655622722402..0.952362339617965..1.04390481342217..1.38089422931516..",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ value     : num  1.297 0.952 1.044 1.381 1.401 ...
> names(fr$samplSize) <- c("09","16","25","36")
Error in names(fr$samplSize) <- c("09", "16", "25", "36") : 
  attempt to set an attribute on NULL
> names(fr$sampleSize) <- c("09","16","25","36")
> str(fr)
'data.frame':	40000 obs. of  2 variables:
 $ sampleSize: Factor w/ 4 levels "c.1.29655622722402..0.952362339617965..1.04390481342217..1.38089422931516..",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ value     : num  1.297 0.952 1.044 1.381 1.401 ...
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> str(fr)
'data.frame':	40000 obs. of  2 variables:
 $ sampleSize: Factor w/ 4 levels "c.1.29655622722402..0.952362339617965..1.04390481342217..1.38089422931516..",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ value     : num  1.297 0.952 1.044 1.381 1.401 ...
> levels(fr$sampleSize) <- c("09","16","25","36")
> str(fr)
'data.frame':	40000 obs. of  2 variables:
 $ sampleSize: Factor w/ 4 levels "09","16","25",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ value     : num  1.297 0.952 1.044 1.381 1.401 ...
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> qplot(value, data=fr, geom="density", color=sampleSize)
> mns09 <- replicate(10000, mean(rexp(9)))
> mns16 <- replicate(10000, mean(rexp(16)))
> mns25 <- replicate(10000, mean(rexp(25)))
> mns36 <- replicate(10000, mean(rexp(36)))
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> value <- c(mns09, mns16, mns25, mns36)
> str(value)
 num [1:40000] 1.13 0.84 1.052 0.906 1.376 ...
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> fr <- data.frame(value = value, sampleSize = rep(c("09","16","25","36"), each=10000))
> str(fr)
'data.frame':	40000 obs. of  2 variables:
 $ value     : num  1.13 0.84 1.052 0.906 1.376 ...
 $ sampleSize: Factor w/ 4 levels "09","16","25",..: 1 1 1 1 1 1 1 1 1 1 ...
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> \
Error: unexpected input in "\"
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> nmn09 <- replicate(10000, mean(rnorm(9)))
> med09 <- replicate(10000, median(rnorm(9)))
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> mean(nmn09); mean(med09)
[1] 0.003062494
[1] 0.002347504
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> sd(nmn09); sd(med09)
[1] 0.3339833
[1] 0.4031011
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> qplot(c(nmn09, med09), geom="density", color = gl(2,10000,labels=c("mean","median")))
> stat <- gl(2,10000,labels=c("mean","median"))
> str(stat)
 Factor w/ 2 levels "mean","median": 1 1 1 1 1 1 1 1 1 1 ...
> qplot(c(nmn09, med09), geom="density", color=stat)
> load("~/Downloads/long.rda")
> str(long)
'data.frame':	80000 obs. of  4 variables:
 $ variable: Factor w/ 8 levels "Mean.n9","Mean.n16",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ value   : num  -0.274 0.282 0.136 0.181 0.323 ...
 $ stat    : Factor w/ 2 levels "mean","median": 1 1 1 1 1 1 1 1 1 1 ...
 $ size    : Factor w/ 4 levels "9","16","25",..: 1 1 1 1 1 1 1 1 1 1 ...
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> xtabs(~ stat + size, long)
        size
stat         9    16    25    36
  mean   10000 10000 10000 10000
  median 10000 10000 10000 10000
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> names(long) <- c("var", "value", "stat", "sz")
> str(long)
'data.frame':	80000 obs. of  4 variables:
 $ var  : Factor w/ 8 levels "Mean.n9","Mean.n16",..: 1 1 1 1 1 1 1 1 1 1 ...
 $ value: num  -0.274 0.282 0.136 0.181 0.323 ...
 $ stat : Factor w/ 2 levels "mean","median": 1 1 1 1 1 1 1 1 1 1 ...
 $ sz   : Factor w/ 4 levels "9","16","25",..: 1 1 1 1 1 1 1 1 1 1 ...
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> qplot(value, data=long, geom="density", color=stat, linetype=sz)
> qplot(value, data=long, geom="density", color=stat, facets= ~sz)
> Save workspace image? [y/n/c]: n

Process R finished at Wed Sep 22 11:59:42 2010