On 2011-03-09 00:17, Lao Meng wrote:
No,even there's only one observation,boxplot can still be drawn.
x<-1
boxplot(x)
or
x<-1:3
boxplot(x)
...
Well, yes, it *can* be drawn. But it shouldn't be.
A boxplot based on fewer than, say, 10 values is
just nonsense. Even 10 is pretty dubious.
Anyway, it seems that the OP needs to study the
difference between a boxplot and a barplot.
Peter Ehlers
2011/3/9 Dennis Murphy<djmu...@gmail.com>
Hi:
A box plot is based on a five number summary, so you need at a minimum five
observations (and preferably at least twice that) to make a box plot a
viable summary measure for a continuous variable. Consider other graphical
summaries for these data - perhaps a strip chart or a simple scatterplot.
HTH,
Dennis
On Tue, Mar 8, 2011 at 9:26 PM, Gaurav Kumar<gau...@gauravkumar.org>
wrote:
Dear R-user,
I'm facing problem to draw boxplot. I can draw my
boxplot but the space option is not working for me. I've no clues where
i'm doing wrong
my data is as matrix as shown below:
[,1] [,2]
[1,] 98 60
[2,] 96 70
[3,] 95 80
and i'm plotting as
barplot(height=c(data[1,],data[2,],data[3,]),
beside=TRUE,
space=c(.1,1),
border="black",
col=c("blue","red") )
Please help me where i'm doing wrong or some known issue is there with
boxplot.
Thanks in advance.
Gaurav Kumar
www.gauravkumar.org
PhD Student, Chemistry and Biomolecular Sciences, Macquarie , Sydney,
Australia.
MS (Computational Biology), NCBS-TIFR, Bangalore, India.
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