Convert a vector with hypehnated names into a symmetric matrix with names obtained from vect2mat2(names(x)).
vec2mat(x, sep = "-")
Either (1) a vector with hyphenated names indicating pairs of factor levels, groups or items that are and are not significantly different or (2) a matrix indicating same. If x is already a matrix, it is checked for symmetry. NAs are not allowed.
"strsplit" character to apply to names(x).
x must have names each of which contains exactly one hyphen; if not, vec2mat issues an error message. If the same comparison is present multiple times, the last value is used; no check is made for duplicates.
A symmetrix matrix of the same class as the input with names obtained from unique(strsplit(names(x))). All nonspecified elements will be 1 if class(x) is numeric, FALSE if logical and "" if character. Used by the functions 'multcompLetters' and 'multcompTs'.
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