On Wed, 14 Oct 2009, tdm wrote:
Hi,
Can someone please give me a pointer as to how I can set values of an array?
See
?Subscript
and study the examples.
What do you suppose
array( 1:4, dim=c(2, 2) )[1][2]
is? R is not C.
HTH,
Chuck
Why does the code below not work?
my_array <- array(dim=c(2,2))
my_array[][] = 0
my_array
[,1] [,2]
[1,] 0 0
[2,] 0 0
for(i in seq(1,2,by=1)){
for(j in seq(1,2,by=1)){
my_array[i][j] = 5
}
}
Warning messages:
1: In my_array[i][j] = 5 :
number of items to replace is not a multiple of replacement length
2: In my_array[i][j] = 5 :
number of items to replace is not a multiple of replacement length
my_array
[,1] [,2]
[1,] 5 0
[2,] 5 0
--
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Charles C. Berry (858) 534-2098
Dept of Family/Preventive Medicine
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