[R] error using boxplot.stats (but boxplot works¿?)

[Duncan Murdoch]

On 06/05/2007 4:34 AM, Hugo M.Fernandez Bellon wrote:
> Hi
> 
> The answer to this may be obvious, but it's got me floored.
> 
> I'm unable to get boxplot.stats to work for me!
> 
> My session looks something like this:
> 
> 	> ia=read.table('/tmp/prueba.csv', header=TRUE, sep=",")
> 	> attach(ia)
> 
> 	> boxplot.stats(X8weeks~Orden)
> 
> 	Error in sort (na.last, decreasing, ...) : 
>         	argument 1 is not a vector

See ?boxplot.stats.  It can't handle a formula argument, it wants a 
numeric vector.
> 
> 	In addition: Warning messages:
> 	1: is.na() applied to non-(list or vector) in: is.na(x) 
> 	2: is.na() applied to non-(list or vector) in: is.na(x) 
> 	3: is.na() applied to non-(list or vector) in: FUN(X[[1]], ...) 
> 
> 	[the error message in R 2.3.1 is slightly different: it says it is not 
> 	atomic and shows only the 1st two warning messages]
> 
> However, boxplot(X8weeks~Orden) prints the boxplot properly (no error messages, data accurately represented).

You can use boxplot(X8weeks ~ Orden, plot=FALSE).

Duncan Murdoch

> 
>> is.numeric(X8weeks)=TRUE
>> is.factor(Orden)=TRUE
> "X8weeks" has no NA's 
> 
> 
> So, the question is: how can I access the data used to generate the boxplot (and why does boxplot.stats fail)?
> 
> 
> Thanks!
> 
> Hugo Fernández
> 
> -------------
> 	> sessionInfo()
> 	R version 2.4.1 (2006-12-18) 
> 	i486-pc-linux-gnu 
> 	
> 	locale:
> 	LC_CTYPE=es_ES.UTF-8 at euro;LC_NUMERIC=C;LC_TIME=es_ES.UTF-8 at euro;
> 	LC_COLLATE=es_ES.UTF-8 at euro;LC_MONETARY=es_ES.UTF-8 at euro;
> 	LC_MESSAGES=es_ES.UTF-8 at euro;LC_PAPER=es_ES.UTF-8 at euro;
> 	LC_NAME=C;LC_ADDRESS=C;LC_TELEPHONE=C;
> 	LC_MEASUREMENT=es_ES.UTF-8 at euro;LC_IDENTIFICATION=C
> 
> 	attached base packages:
> 	[1] "stats"     "graphics"  "grDevices" "utils"     "datasets"  "methods"  
> 	[7] "base"
> 
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