Splits (dichotomizes) a numeric vector into two classes using the "up-down" or "median" criteria. The results is intendend to be used in a runs test for tendency.
dichotomy(x, criteria = c("up-down", "median"))
| x | A numeric vector of values to split |
|---|---|
| criteria | Splitting criteria to use ("up-down" or "median") |
A vector with the splitted classes
Davis, J. C. (2002). Statistical and Data Analysis in Geology. 3rd ed. John Wiley & Sons.
x1 = c(17, 14, 13, 17, 9, 15, 36, 13, 26, 10, 25, 13, 25, 8, 28, 15, 19, 32, 22) x2 = c(17, 14, 14, 17, 9, 15, 36, 13, 26, 10, 25, 13, 25, 8, 28, 15, 19, 32, 22) dichotomy(x1)#> [1] - - + - + + - + - + - + - + - + + - #> Levels: - +dichotomy(x2)#> [1] - + + - + + - + - + - + - + - + + - #> Levels: - +dichotomy(x2, criteria = "median")#> [1] + - - + - - + - + - + - + - + - + + + #> Levels: - +