dear Researcher

Sorry that I know this is not the right email-list and this is a basic help
but I am doing a remotesensing filter and I am honest, I have no idea how I
can do this.
I have a sequance form 1 to 16

 > seq(1:16)
 [1]  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16

and I wish to select this combination in a vector
a <- c(1,3,6,8,9,11,14,16)
b <- c(2,4,5,7,10,12,13,15)

following the below example

> t(matrix(data = seq(1:16), nrow = 4, ncol = 4))
     [,1] [,2] [,3] [,4]
[1,]    1    2    3    4
[2,]    5    6    7    8
[3,]    9   10   11   12
[4,]   13   14   15   16

gianni

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