x[x == 10] Elements which are equal to 10. x[x < 0] All elements less than zero. x[x %in% c(1, 2, 5)] Elements in the set 1, 2, 5. By Position By Value Named Vectors x[‘apple’] Element with name ‘apple’. Reading and Writing Data Working Directory getwd() Find the current working directory (where inputs are found and outputs are sent).
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