range isn't working

Just got the R2021b version and some of my code isn't working :(

The basic function "range" initialy offered me to calculate some wave propogation parameters, I solved this by removing the Communications Toolbox, but now it's not working at all!

Here is an example of the error:

a=[1 2 3]

>> range(a)

'range' requires one of the following:

Antenna Toolbox

Communications Toolbox

Fixed-Point Designer

Statistics and Machine Learning Toolbox

>> range(a,'all')

'range' requires one of the following:

Antenna Toolbox

Communications Toolbox

Fixed-Point Designer

Statistics and Machine Learning Toolbox

Very frustrating

Answer 1

[Chris]

Yep, I don't think it's part of base Matlab. It works as you would expect if you install the Statistics and Machine Learning Toolbox.

[Chris]

You could write your own range function and put it somewhere in your matlab path, if you don't want to install the toolbox. As a simple example, if you only need it to work with vectors:

function y = range(X)
    % prevent some invalid inputs
    arguments 
        X (:,1) {mustBeNumeric, mustBeReal}
    end
    
    y = max(X)-min(X);
end

(the full function from the toolbox is not much more complicated, but I'm not sure about the legality of posting it here)

Answer 2

[DGM]

If you don't need to use a dimension input:

A = [1 2 3; 4 5 6; 7 8 9];

range = @(x) max(x) - min(x);
range(A)

ans = 1×3

6 6 6

range(A(:))

ans = 8

If you want to use dimension input

range = @(x,dim) max(x,[],dim) - min(x,[],dim);
range(A,2)

ans = 3×1

2 2 2

Answer 3

[Image Analyst]

What about the built-in bounds() function:

v = 4:99;
[minv, maxv] = bounds(v)

minv =

4

maxv =

99

Answer 4

[Evgeny Hahamovich]

Thanks guys for your fast responce.

Added the Statistics and Machine Learning Toolbox, and got my range function back :)

While all other solutions are great, I just don't have the patience to start patching up my old code in order to make it work...