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Scilab Help >> Elementary Functions > Matrix operations > sign

sign

signum function

Syntax

X = sign(A)

Arguments

А

real or complex matrix. A may be sparse.

X

real or complex matrix

Description

X = sign(A) returns the matrix made of the signs of A(i,j). For complex A, sign(A) = A./abs(A).

Examples

sign(rand(2,3))
sign(1+%i)
sign(sprand(8,3,0.3,"normal"))

See also

  • abs — absolute value, magnitude
  • csgn — returns the sign of a vector of real of complex values
  • signm — matrix signum function

History

VersionDescription
6.0 Extension to sparse matrices
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Last updated:
Tue Feb 14 15:02:42 CET 2017