double function Matlab

double() function Convert symbolic matrix to MATLAB numeric form.

Syntax

r = double(S)

Description

r = double(S) converts the symbolic object S to a numeric object r.

Input Arguments

s
Symbolic constant, constant expression, or symbolic matrix whose entries are constants or constant expressions.

Output Arguments

r
If S is a symbolic constant or constant expression, r is a double-precision floating-point number representing the value of S. If S is a symbolic matrix whose entries are constants or constant expressions, r is a matrix of double precision floating-point numbers representing the values of the entries of S.

Example

>> img = imread('Desert.jpg'); % reading an image
>> class(img) % determining type of image which is object here
ans =
uint8
>> img1 = double(img); % converting object to double
>> class(img1) % determining type of image which is double now
ans =
double
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