Why I recive such an answer:"Incorrect number or types of inputs or outputs for function range."

I wrote the following codes:

x = [1 -1.65 2.2 -3.1];

y = range(x)

But MATLAB's answer is "Incorrect number or types of inputs or outputs for function range."

Did I made any mistake?

[Dyuman Joshi]

"Did I made any mistake?"

You might have made a new function and named it range, as @DGM has pointed out as well, which is overshadowing the other range functions defined in MATLAB.

As a general note, you should not use built-in function names as names for scripts, functions or variables.

[刘奇粟]

So what should I do to fix it

[Dyuman Joshi]

Rename it to something else, like fun_range007

Answer 1

[DGM]

x = [1 -1.65 2.2 -3.1];
y = range(x)

y = 5.3000

The code you posted should work fine. You probably have something shadowing the intended file.

Check the output of

which range -all

/MATLAB/toolbox/stats/stats/range.m
/MATLAB/toolbox/shared/channel/rfprop/@txsite/range.m   % txsite method
/MATLAB/toolbox/stats/distributed/@distributed/range.m  % distributed method

If you see some user-created function file in that list, rename it to something other than range.m. Likewise, if this error is happening in some a script or function with a local function called range(), fix that.

[刘奇粟]

I did so but there is no other file was named range.m

[Dyuman Joshi]

Please share the output you get after running this -

which range -all

[刘奇粟]

There is one file

[Torsten]

You don't have the Statistics Toolbox installed. Don't you have a licence for it ?

"range" is part of the Statistics Toolbox and can only be used if you have it installed and licenced.

https://uk.mathworks.com/matlabcentral/answers/1808785-how-do-i-tell-matlab-to-use-the-proper-range-function?s_tid=prof_contriblnk

[刘奇粟]

OK, I know it I'll install it. Thank you very much

[DGM]

If you want, here's a replacement for range() (attached)

% test row vector
args = {rand(1,100)};
x1 = range(args{:});
x2 = myrange(args{:});
isequal(x1,x2)

ans = logical
   1

% test col vector
args = {rand(100,1)};
x1 = range(args{:});
x2 = myrange(args{:});
isequal(x1,x2)

ans = logical
   1

% test with specified dimension
args = {rand(100),2};
x1 = range(args{:});
x2 = myrange(args{:});
isequal(x1,x2)

ans = logical
   1

I'm just recalling the behavior off the top of my head, but the original implementation should be similar, if not a bit simpler. There's not much to it.