Re: [Rd] Bug in merge() in R-2.0.0 alpha

From: Prof Brian Ripley <ripley_at_stats.ox.ac.uk>
Date: Thu 16 Sep 2004 - 15:50:18 EST


On Wed, 15 Sep 2004, Uwe Ligges wrote:

> In some cases, merge() has a problem in R-2.0.0 alpha (2004-09-14):
>
> x <- structure(c("a", "b", "2", "0.2-26", "O", "O"), .Dim = c(2, 3),
> .Dimnames = list(c("1", "2"), c("P", "V", "2")))
>
> y <- structure(c("a", "b", "2", "0.2-25", "O", "O"), .Dim = c(2, 3),
> .Dimnames = list(c("1", "2"), c("P", "V", "1")))
>
> merge(x, y, all.y=TRUE)
>
> Error in "[<-"(`*tmp*`, ri, value = NULL) :
> incompatible types
>
>
> Looks like the NA handling has changed anywhere.

Peter was right. rbind.data.frame had

                ## copy names if any
                names(value[[jj]])[ri] <- names(xj)

but did not test if there were any. It would probably be a good idea if that did work but for now I have added a test.

-- 
Brian D. Ripley,                  ripley@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 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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Received on Thu Sep 16 15:58:03 2004

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