| MATLAB Functions | Help Desk |
sign
Signum function
Y = sign(X)
Y = sign(X)
returns an array Y the same size as X, where each element of Y is:
1 if the corresponding element of X is greater than zero
0 if the corresponding element of X equals zero
-1 if the corresponding element of X is less than zero
X, sign(X) = X./abs(X).
abs Absolute value and complex magnitude
conj Complex conjugate
imag Imaginary part of a complex number
real Real part of complex number