range isn't working

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Evgeny Hahamovich
Evgeny Hahamovich 2021-10-30
回答： Evgeny Hahamovich 2021-10-30
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

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采纳的回答

Chris
Chris 2021-10-30
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.
  1 个评论
Chris
Chris 2021-10-30
编辑：Chris 2021-10-30
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)

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更多回答（3 个）

DGM
DGM 2021-10-30
编辑：DGM 2021-10-30
Ran in:
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
Image Analyst
Image Analyst 2021-10-30
What about the built-in bounds() function:
v = 4:99;
[minv, maxv] = bounds(v)
minv =
4
maxv =
99
Evgeny Hahamovich
Evgeny Hahamovich 2021-10-30
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...

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