You can use a loop...
If x,y and z are your vectors containing Nx,Ny and Nz
numbers respectively, then
for (Ix in 1:Nx) for (Iy in 1:Ny) for (Iz in 1:Nz) {
Point <- c(x[Ix],y[Iy],z[Iz])
do whatever you need with Point
}
A (probably better) compromise may be:
a <- matrix(0,nrow = Ny*Nz, ncol = 3)
useR's.
I am working with an algorithm in which I will need to create combinations
of all the points I have in a matrix. When I have 2 variables, I simply use
expand.grid() to do this. Sometimes I am faced with 3 or more variables and
if I run expand.grid(), R cannot process it due to the huge
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