R devel - May 2001 - zero-extent matrices (PR#958)

In 1.2.3
  matrix(nrow=10,ncol=0)%*%numeric(0)
returns a 10x1 matrix of 0s

In todays 1.3 it returns a 10x1 matrix of miscellaneous junk.

While both are probably wrong the latter is causing problems for survival.

	-thomas

platform i686-pc-linux-gnu
arch     i686
os       linux-gnu
system   i686, linux-gnu
status   Under development (unstable)
major    1
minor    3.0
year     2001
month    05
day      30
language R



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tlumley@u.washington.edu writes:
> In 1.2.3
>   matrix(nrow=10,ncol=0)%*%numeric(0)
> returns a 10x1 matrix of 0s
> 
> In todays 1.3 it returns a 10x1 matrix of miscellaneous junk.
> 
> While both are probably wrong the latter is causing problems for survival.
Acutally, I'd say that the 1.2.3 version is correct (sums over empty
sets being zero is a standard convention).

Hmm, 1.3.0 as of yesterday gives 10 zeros for me as does the one
updated and compiled about 18:00 CET...
-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard@biostat.ku.dk)             FAX: (+45) 35327907
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