Replace Lower and Upper Triangular Part of a Matrix
Replace the lower or the upper triangular part of a (correlation) matrix.
replace_triangle(x, triangle = c("lower", "upper"), by = "", diagonal = FALSE)
replace_upper_triangle(x, by = "", diagonal = FALSE)
replace_lower_triangle(x, by = "", diagonal = FALSE)x |
a (correlation) matrix |
triangle |
the triangle to replace. Allowed values are one of "upper" and "lower". |
by |
a replacement argument. Appropriate values are either "" or NA. Used to replace the upper, lower or the diagonal part of the matrix. |
diagonal |
logical. Default is FALSE. If TRUE, the matrix diagonal is included. |
an object of class cor_mat_tri, which is a data frame
replace_triangle: replaces the specified triangle by empty or NA.
replace_upper_triangle: replaces the upper triangular part of a matrix.
Returns an object of class lower_tri.
replace_lower_triangle: replaces the lower triangular part of a matrix.
Returns an object of class lower_tri
# Compute correlation matrix and pull triangles #:::::::::::::::::::::::::::::::::::::::::: # Correlation matrix cor.mat <- mtcars %>% select(mpg, disp, hp, drat, wt, qsec) %>% cor_mat() cor.mat # Replace upper triangle by NA #:::::::::::::::::::::::::::::::::::::::::: cor.mat %>% replace_upper_triangle(by = NA) # Replace upper triangle by NA and reshape the # correlation matrix to have unique combinations of variables #:::::::::::::::::::::::::::::::::::::::::: cor.mat %>% replace_upper_triangle(by = NA) %>% cor_gather()
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