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Say I have a vector in R:
x <- c(1,2,3)
is there a concise way to create a new vector y that is one less than the size of x where:
y <- x[i+1] - x[i]
without using a for-loop?
diff(x)is the obvious answer.A more basic alternative is
x[-1] - x[-length(x)]and this can easily be adapted for example to sums or products of consecutive terms