Thanks to all for the answers
-----------
Thierry : a very interesting answer... but I'm still trying to figure how
to install ggplot2 :-)
install.packages("ggplot")
Warning in install.packages("ggplot2") : argument 'lib' is missing: using
'...R/i486-pc-linux-gnu-library/2.5'
??
also installing the dependency 'colorspace' OK
....
.gzip: /tmp/Rtmpl8LWFh/downloaded_packages/ggplot2_0.5.5.tar.gz:
unexpected end of file
tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
.. 3: installation of package 'ggplot2' had
non-zero exit status in: install.packages("ggplot2")
--------------------------------
R.version() says:
arch i486
os linux-gnu
system i486, linux-gnu
status
major 2
minor 5.1
year 2007
month 06
day 27
svn rev 42083
language R
version.string R version 2.5.1 (2007-06-27)
My OS is a Linux Debian Sid
-----------
S. Ellison wrote >> specifying at= for both plots might help.
Ellison, I take a look to the opcion "at" but I can not understand
reading the documentation how to use this option.
for instance:
month <-c( 1, 2, 3, 4, 5, 6, 7,8,9,10,11,12)
y <-c( 1, 1, 1, 4, 4, 4, 4,4,1, 3, 3, 3)
z <-c( 1, 3, 4, 5, 6, 7,8,9,10,11,12)
boxplot(y ~ month, add=F, at= 1:12) #OK, now lets try to overlap the
second plot
boxplot(y ~ month, add=T, at= 1:12) #Error in
model.frame(... variable lengths differ (found for 'month') boxplot(y ~
month, add=T, at= 1:11) #Error in
model.frame... variable lengths differ (found for 'month') boxplot(y ~
month, add=T, at= 1,3,4,5,6,7,8,9,10,11,12) #Error in model.frame...
variable lengths differ... boxplot(y ~ month, add=T, at=
c(1,3,4,5,6,7,8,9,10,11,12)) #Error in model.frame... variable lengths
differ...
???
Another try
1/12 = 0.08333333
boxplot(y ~ month, add=T, at= 0.0833333) #Error in bxp(list(stats =
c(20, 20, 20, 20, 20, 0, 0, 0, 0, 0, 20, 20, :
'at' must have same length as 'z$n', i.e. 12
boxplot(y ~ month, add=T, at= 12) #same error ... 'at' must have same
length as 'z$n', i.e. 12
Glups. :-}
And now what?
Pablo Valdes
>>>> <[EMAIL PROTECTED]> 04/10/2007 16:39:41 >>>
> Dear R list members
> I am trying to improve a boxplot with 2 data sets. I run somethinkg
> like
>
> boxplot(data1 ~ month, add=F, col = "red", ...)
> boxplot(data2 ~ month, add=T, col = "blue", ...)
>
> The problem is that the data from February are missing for data2, so R
> think that must take little more space between the data classes in
> data 2 and then both data gropus are not aligned. In the R
> documentation I do not find any posile solution for tell R that I want
> reserve a extra space for this month, So the boxplot is erroneous and
> the x axis have a strange numeration
>
> 1 2 3 4 54 65 76 ... etc
>
> I would be grateful if anyone could suggest how to tell R That the
> boxplots must be fitted to the same x class in both data groups. To
> make a false data group with a 0 valor for february is not aceptable
> in this case
>
> Sincerely
> Pablo Valdes
>
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