abs

Absolute value or complex modulus

Usage

abs(A)

• It returns the absolute value of each element of A.
• If A is complex, it returns the modulus of each element of A.
• The output has the same size as A.
• It returns an empty array if A is empty.

Examples

• When a is real, abs(a) gives the absolute values.

Input

a = [1 -1 0 1.2 -2.2];
abs(a)

Output

ans =
1.000   1.000   0.000   1.200   2.200

• When a is complex, abs(a) gives the moduli.

Input

a = [1+i -1-2i 0+0i 1.2 -2.2];
abs(a)

Output

ans =
1.414   2.236   0.000   1.200   2.200