3 bit binary signal to numerical value

I have a 32768x3 double array that contains a 3 bit binary signal. I want to convert this 3 bit binary signal to a value between 1 and -1. For example:

111 ----- 0.75

110 ----- 0.5

101 ----- 0.25

100 ----- 0

011 ----- -0.25

010 ----- - 0.5

001 ----- - 0.75

000 ----- - 1

I want to store the results in a 32768x1 array

Thank you

Answer 1

[Walter Roberson]

YourArray(:,1) + YourArray(:,2) / 2 + YourArray(:,3) / 4 - 1

[Yusuf Dhoda]

Thank you so much!

[Adam Danz]

Nice! +1