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Scilab Help >> Elementary Functions > Matrix operations > tril

tril

lower triangular part of matrix

Syntax

tril(x [,k])

Arguments

x

matrix (real, complex, polynomial, rational)

k

integer (default value 0)

Description

Lower triangle part of a matrix. tril(x,k) is made by entries below the kth diagonal : k>0 (upper diagonal) and k<0 (diagonals below the main diagonal).

Examples

s=poly(0,'s');
tril([s,s;s,1])
tril([1/s,1/s;1/s,1])

See also

  • triu — upper triangle
  • ones — matrix made of ones
  • eye — identity matrix
  • diag — diagonal including or extracting
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Last updated:
Thu Feb 14 14:57:13 CET 2019