Return a Matrix with Lower Triangle as TRUE values in R Programming – lower.tri() Function
lower.tri()
function in R Language is used to return a matrix of logical values with lower triangle as TRUE.
Syntax: lower.tri(x, diag)
Parameters:
x: Matrix object
diag: Boolean value to include diagonal
Example 1:
# R program to print the # lower triangle of a matrix # Creating a matrix mat < - matrix(c( 1 : 9 ), 3 , 3 , byrow = T) # Calling lower.tri() Function # Excluding diagonal elements lower.tri(mat, diag = F) |
Output:
[, 1] [, 2] [, 3] [1, ] FALSE FALSE FALSE [2, ] TRUE FALSE FALSE [3, ] TRUE TRUE FALSE
Example 2:
# R program to print the # lower triangle of a matrix # Creating a matrix mat < - matrix(c( 1 : 9 ), 3 , 3 , byrow = T) # Calling lower.tri() Function # including diagonal elements lower.tri(mat, diag = T) |
Output:
[, 1] [, 2] [, 3] [1, ] TRUE FALSE FALSE [2, ] TRUE TRUE FALSE [3, ] TRUE TRUE TRUE
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