[R] Box Plot under GUI (R Commander/RKward)

[Timothy Bates]

something like this will get you going, assuming your data are in a dataframe called “qual”

# qual <- read.table(pipe("pbpaste"), header=T, sep='\t')
boxplot(formula=Time~Distance+Season, data=qual)


Followup question from me: 

i can’t see why
boxplot(formula=Time, data=qual)

should return the error "can’t find Time”  “Time~" and “~Time" don’t help

Doesn’t that make the formula interface to boxplot broken for one-variable non grouped plots?

Best, t

On 17 May 2011, at 12:31 PM, Vikas Garud wrote:

> Hi,
> 
> I am a consultant in Quality Management.  I am exploring the use of R
> with any GUI - R commander/Rkward for doing analytical work.  Have
> installed R, R Commander and Rkward.
> 
> I hope to learn by doing various exercises that I use for teaching
> analytical techniques to my clients.  I would be posting the data on
> this mailing list, and the rkward mailing list wherever I get stuck.
> 
> First such technique I am trying to explore is the use of boxplots.
> The data is pasted below:
> Season	Transporter	Distance	Tonnage	Time
> 1	1	500	1	17
> 1	1	500	2	22
> 1	1	1000	1	23
> 1	1	1000	2	29
> 1	1	1500	1	33
> 1	1	1500	2	38
> 1	2	500	1	19
> 1	2	500	2	26
> 1	2	1000	1	30
> 1	2	1000	2	35
> 1	2	1500	1	42
> 1	2	1500	2	42
> 2	1	500	1	18
> 2	1	500	2	24
> 2	1	1000	1	25
> 2	1	1000	2	26
> 2	1	1500	1	35
> 2	1	1500	2	38
> 2	2	500	1	21
> 2	2	500	2	24
> 2	2	1000	1	28
> 2	2	1000	2	37
> 2	2	1500	1	36
> 2	2	1500	2	44
> 
> In this exercise, I am trying to plot box plots of the variable
> "Time", the last column and separated by all the other variables-
> Season, Transporter, Distance and Tonnage.  I expect the output in
> form of multiple box plots, arranged side by side so that I can
> compare the time performance for, say, season 1, transporter 2,
> Distance 500 and tonnage 2 with, say, season 2, transporter 1,
> Distance 500 and tonnage 2.  The box plot command in R Commander
> (Grpahs->Boxplot...) has a button called "plot by groups" presumably
> to achieve what I am trying to do.  However, on clicking I don't get
> any further output.  What am I missing?  (There is nothing equivalent
> to this button under Rkward)
> 
> I tried to search the mailing list on box plot, but could not find
> anything relevant.  I have also searched in manual and seen this type
> (or even more complex analysis) being done on terminal.  However, I
> need to do it under (any) GUI.  Any help is highly appreciated.
> 
> Thanks
> Vikas Garud
> 
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