Y = abs(X)
abs(X)
returns the absolute value for each element of X
.
If X
is complex, abs(X)
returns the complex modulus (magnitude):
abs(X) = sqrt(real(X).^2+imag(X).^2)
If X
is a MATLAB string, abs(X)
returns the numeric values of the ASCII characters in the string. The way the string prints changes; the internal representation does not.
abs(-5) = 5
abs(3+4i) = 5
abs('3+4i') = [51 32 43 32 52 105]
angle
,setstr
,sign
,strings
,unwrap
(c) Copyright 1994 by The MathWorks, Inc.