On 31/10/2007 5:50 PM, Achim Zeileis wrote:
> On Wed, 31 Oct 2007, Michael Kubovy wrote:
>
>> Dear R-helpers,
>>
>> I wasn't able to find out how to override the alphabetical ordering
>> of the rows and columns in a vcd::mosaic plot. I would like to have
>> them each ordered by numerical values in a different column of the
>> data frame that contains the contingency data.
>
> mosaic() uses the same ordering as in the levels() of your factor. You
> probably created the factor with an alphabetical ordering (which is the
> default if the input is a character vector), e.g.:
>
> ## character vector
> x <- c("a", "b", "b", "a", "c")
>
> ## use alphabetical default
> f <- factor(x)
> f
This prints
[1] a b b a c
Levels: a b c
as you'd expect.
>
> ## change ordering in existing factor
> levels(f) <- c("b", "c", "a")
> f
This prints
[1] b c c b a
Levels: b c a
which might be a surprise if you wanted the order c("a", "b", "b", "a",
"c"). If you don't want to change the values, use
f <- factor(f, levels=c("b", "c", "a"))
f
which prints
[1] a b b a c
Levels: b c a
Duncan Murdoch
>
> ## create from scratch
>
>
>
>> I would be most grateful for a pointer toward the solution.
>>
>> Thanks,
>> MK
>> _____________________________
>> Professor Michael Kubovy
>> University of Virginia
>> Department of Psychology
>> USPS: P.O.Box 400400 Charlottesville, VA 22904-4400
>> Parcels: Room 102 Gilmer Hall
>> McCormick Road Charlottesville, VA 22903
>> Office: B011 +1-434-982-4729
>> Lab: B019 +1-434-982-4751
>> Fax: +1-434-982-4766
>> WWW: http://www.people.virginia.edu/~mk9y/
>>
>> ______________________________________________
>> R-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>>
>
> ______________________________________________
> R-help@r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
