How do i get decimal values using randi?

Im supposed to create a 3x4 matrix with random decimal value from -10 to 20. Im not sure how to get decimal values.

Answer 1

[Adam Danz]

randi() will only return integers. Instead, use rand() which will prouduce random values between 0 and 1; then scale and shift the results to the defined bounds.

arraySize = [3,4]; 
bounds = [-10,20]; 
x = rand(arraySize)*range(bounds)+bounds(1);