[R] How to find row maximum of two columns

[Rob Steele]

Dale Steele wrote:
> Hello -- Given the 10x2 matrix below, my goal is to create a vector
> which contains the maximum of column 1 and column 2, or the only value
> if there is an NA in one column.  I experimented with max.col without
> success.  Thanks.  --Dale
> 
>  > > tmax.m
>         tmaxhme tmaxer
>    [1,]   101.0   99.8
>    [2,]   102.5   99.0
>    [3,]   100.6   98.4
>    [4,]      NA  100.5
>    [5,]   101.0   99.4
>    [6,]      NA   97.6
>    [7,]      NA   99.0
>    [8,]    99.0   98.4
>    [9,]      NA   98.5
>   [10,]      NA   99.1
> 
> ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
> 

Try: apply(tmax.m, 1, max, na.rm = TRUE)