2 bit binary signal to numerical value

I have a 32768x2 double array that contains a 2 bit binary signal. I want to convert this 2 bit binary signal to a value between 1 and -1. For example:

01 ----- 1

00 ----- 0.5

10 ----- -0.5

11 ----- -1

I want to store the results in a 32768x1 array

Thank you

Answer 1

[Deepak Kumar]

Try the below code. It should work fine.

clc
clear all
a=your_array; %Assign your array to the vaiable 'a'
L=size(a,1);%Get number of rows in a
d=bi2de(a,'left-msb'); %Convert binary vectors to decimal numbers with 1st column as MSB. use, d=bi2de(a) if you want 1st column as LSB

for i=1:L
    switch d(i)
        case 1
            b(i)=1;
        case 0
            b(i)=.5;
        case 2
            b(i)=-.5;
        case 3
            b(i)=-1;
    end
end
b=b'; % Final answer

[Yusuf Dhoda]

Thank you very much for your help. The code worked well