R help - May 2006 - Maximum value of two columns

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

apply(tmax.m, 1, max, na.rm=T)

On 5/10/06, Dale Steele <dsteele@fastmail.fm>
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
>
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-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390 (Cell)
+1 513 247 0281 (Home)

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