R help - Apr 2006 - Translate twobin in S-plus to R?

Hi all,

I'm new to R, but have got the task to translate a short program written 
for S-plus. I am now stuck on a command twobin which does not seem to be 
available in R. Anyone know a replacement for this? The syntax used for 
this command in my code is:

zobs<-twobin(obstab[1,1],obstab[1,2],obstab[2,1],obstab[2,2],0.05)

where obstab is a two by two contingency table and the command produces an 
object (?) with, among other things, a chi2-value.

Any and all help would be appreciated!

Ulf

Ulf Emanuelson <Ulf.Emanuelson at kv.slu.se> writes:
> Hi all,
> 
> I'm new to R, but have got the task to translate a short program
written
> for S-plus. I am now stuck on a command twobin which does not seem to be 
> available in R. Anyone know a replacement for this? The syntax used for 
> this command in my code is:
> 
> zobs<-twobin(obstab[1,1],obstab[1,2],obstab[2,1],obstab[2,2],0.05)
> 
> where obstab is a two by two contingency table and the command produces an 
> object (?) with, among other things, a chi2-value.
> 
> Any and all help would be appreciated!
Er, I can't seem to find it in Splus (7.0) either....

There's a twoby2 function in the Epi package. It prints rather than
return an object, but I'm sure it could be modified.

If you just need the chi^2, consider chisq.test(...)$statistic or
prop.test(...)$statistic 

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