[R] pasing names
Prof Brian D Ripley
ripley at stats.ox.ac.uk
Wed Jul 19 20:39:26 CEST 2000
On Wed, 19 Jul 2000, Heberto Ghezzo wrote:
> Hi, I wrote the simple program below, I want 'bartlett.test' to print the
> real name of the variables, not the dummys 'y' and 'g', Can
> somebody in the list tell me how to pass the names?
> .
> test <- function(y,g){
> # some other stuff
> bartlett.test(y,g)
> # some other stuff
> }
> Thanks.
Use substitute, e.g.
testit <- function(y, g)
{
eval.parent(substitute(bartlett.test(y,g)))
}
data(InsectSprays)
testit(InsectSprays$count, InsectSprays$spray)
Bartlett test for homogeneity of variances
data: InsectSprays$count and InsectSprays$spray
Bartlett's K-square = 25.9598, df = 5, p-value = 9.085e-05
as required, I assume?
--
Brian D. Ripley, ripley at stats.ox.ac.uk
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272860 (secr)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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