get_surround {BoardGames} | R Documentation |
This function extracts all surrounding elements of a specified element in a matrix and returns the result as a vector.
get_surround(data, index, type = "all")
data |
Matrix. |
index |
Index position of element. Input as a vector of row then column positions. |
type |
Takes values of "direct" and "all". "direct" returns only the elements directly in contact with the specified element, whereas "all" returns every surrounding element including diagonals. Defaults to "all". |
M = matrix(1:20,4,5) get_surround(data = M, index = c(2,3))