Non-integer values inside "Randi" function

inputRvector = 'Input r vector for roots of the polynomial as a vector ';
R = input(inputRvector)
R_length = length(R);
input_lower_e_range = 'Input lower range of e ';
e_min = input(input_lower_e_range)
input_upper_e_range = 'Input upper range of e ';
e_max = input(input_upper_e_range)
random_perturbations = randi([e_min e_max],1,R_length);

Hey guys, I am trying to get an input from the user and use that input inside the 'randi' function as a range of vlaues and a length of the 'randi' vector. The trick is that I want values much lower than 1 in the range of (10^-1,10^-8) and I think randi doesnt work with non-integers. Got any ways to do the same except with non-integer values as in the range (10^-1,10^-8)?

I am trying to do as in this case:

r = randi([10 50],1,5)

r = 1×5

43 47 15 47 35

P.S: I have been looking for similar questions for 4 hours and could'nt find anything

Thank you in advance

[Giuseppe Inghilterra]

Last line of your code seems to be wrong.

It should be:

random_perturbations = randi([e_min e_max],1,R);

In this way you generate random integer vector of size [1,R] with values within the range [e_min, e_max].

Problem solved?

[khalid alharthi]

No, it gives me this

Error using randi

Size inputs must be scalar.

[Walter Roberson]

What values are you entering for the prompts?

Are you entering a vector for the lower bounds and upper bounds?

[khalid alharthi]

I have also solved this problem.

The problem I am having now, is that randi only except integers and I need a way to have values like 10^-5.

Answer 1

[Steven Lord]

If you want uniformly distributed random numbers that are not integers, randi is not the right tool for the job. See the examples in the documentation for the rand function.

Answer 2

[Walter Roberson]

random_perturbations = randi([e_min e_max],1,R);]

That ] should not be there at the end of the line.

[khalid alharthi]

So sorry Mr. Roberson about that a was a typo and It wasnt the problem I had.