On Fri, 23 Apr 2010, Worik R wrote:
I am sorry if this is documented in apply's dcumentation or completely
obvious, I could not find or work it out.
Well, try
?apply
and focus on the 'Value:' section, first para.
To me, that behavior seems consistent with other functions in
the [tslm]apply family.
Perhaps you want sweep(). See
?sweep
HTH,
Chuck
Given an matricies Q: 2x3, R:1x3 and S:1x2
apply(Q, 1, '-', R) is 3x2 and apply(Q, 2, '-', S) is 2x3
Why?
cheers
Worik
Q
[,1] [,2] [,3]
[1,] 1 2 3
[2,] 10 11 12
R
[1] 1 4 7
S
[1] 1 4
apply(Q, 1, '-', R)
[,1] [,2]
[1,] 0 9
[2,] -2 7
[3,] -4 5
apply(Q, 2, '-', S)
[,1] [,2] [,3]
[1,] 0 1 2
[2,] 6 7 8
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