Full_Name: jarek tuszynski
Version: 1.8.1
OS: windows 2000
Submission from: (NULL) (198.151.13.10)
Example code:
> a=array(1:27, c(3,3,3))
> apply(a,2, var)
[,1] [,2] [,3]
[1,] 1 1 1
[2,] 1 1 1
[3,] 1 1 1
[4,] 1 1 1
[5,] 1 1 1
[6,] 1 1 1
[7,] 1 1 1
[8,] 1 1 1
[9,] 1 1 1
> apply(a,2, mean)
[1] 11 14 17
> apply(a,2, sd)
[,1] [,2] [,3]
[1,] 1 1 1
[2,] 1 1 1
[3,] 1 1 1
I could not figure out from the documentation how MARGIN argument of function
"apply" works in case of arrays with dimentions larger than 2, so I created the
above test code. I still do not know how it suppose to work but I should not get
the results with different dimentions, while calculating var and sd.
Hope this helps,
Jarek
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