V <- c(1,3,2,4,2,3,1);
X <- 3;
pos <-V[V == X];
pos is 3 3.
what I need is the positions of all 3;
I need 2 and 6; which are the positions of 3 in V.
V <- c(1,3,2,4,2,3,1); X <- 3; pos <-V[V == X]; pos is 3 3
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V <- c(1,3,2,4,2,3,1);
X <- 3;
pos <-V[V == X];
pos is 3 3.
what I need is the positions of all 3;
I need 2 and 6; which are the positions of 3 in V.
Use
whichNot what you’re asking for, but useful anyway: you can also use
which.minandwhich.maxto find the position of the minimum and maximum value of the array.