[R] How to create matrix for if-else application with "i"?

[David Winsemius]

Is it really a table? (That is a specific class of object in R.)

You seem to be accessing it as a data.frame. Perhaps something along  
the lines of (untested):

subset(fig8, (Z < S | Z > T) )$P

-- 
David Winsemius


On Apr 10, 2009, at 5:54 AM, herbert8686 at gmx.de wrote:

> Dear R-friends,
>
> Could you please help me with a problem?
>
> I have a table with 4 columns: P,Z,S,T.
>
> Sometimes z is smaller than s, sometimes z is greater than t. For  
> these smaller/greater z-values, I do need the associated p-value  
> (see example below).
>
> I need the whole range of "a" and "b", but I only get the values of  
> "25" for "a" and "5.5" for "b".
>
> Also "i" is always "[1]" for all values of p.
>
> Could you please help on how to get a matrix form for all separate p- 
> values (for z<s and z>t)?
>
> Thanks very much in advance!
>
> Herbert
>
>
>
> #################################
> p<-fig8$P
> z<-fi8a$Z
> s<-fig8$S
> t<-fig8$T
>

David Winsemius, MD
Heritage Laboratories
West Hartford, CT