why nanmean error?

Hi all,

I am trying to average 3d matrix that have nan values, but I am getting the following error:

Error using nanmean

Too many input arguments.

and the resulted matrix when i used mean function it doesn't show any data

any suggestion?

Thanks u

[Guillaume]

any suggestion?

Clearly, you passed too many inputs to nanmean. Crucially you haven't shown us how you call nanmean so it's difficult to say exactly what you do wrong.

Note that since R2014b (I think), there is no need to use nanmean, the regular mean function can ignore nans.

Answer 1

[Star Strider]

You may have your own function or a variable that you named ‘nanmean’.

Run this from a script or your Command Window:

which nanmean -all

If the first result is:

nanmean is a variable.

You have found the problem. The solution is to re-name your function or variable to something that does not overshadow any MATLAB functions, and is meaningful to you.

[Image Analyst]

Also, posting the FULL error message - ALL the red text, not a snippet from it - would help.

I know the full error message is not

Error using nanmean

Too many input arguments.

UNLESS the error was thrown from inside the nanmean function itself instead of by MATLAB, because MATLAB error messages also include the line number and the actual line of code that threw the error.

[Lilya]

Thank you @Guillaume , @ madhan ravi , and @ Star Strider it is exactly as what you said. there is another function have the same name. Thanks once again amazing people :)

[Star Strider]

As always, my pleasure.

Also, we are not ‘mathworks people’ (although MathWorkers do appear here, with the ‘STAFF’ label by their names). We are unpaid volunteers who help to solve problems because we enjoy doing it.

[Lilya]

Edited.. sorry for that.

[Star Strider]

No worries, and no need to apologise. It is a relatively common belief that most of us are MathWorks employees (‘MathWorkers’). Only those with the blue ‘STAFF’ label by their names actually are. The rest of us are just here for the fun of it!

[madhan ravi]

Second Star Strider.

Answer 2

[madhan ravi]

If your using 2018b version just use mean with 'omitnan' as a name pair

doc mean % if and only if your using 2018b to use them  with n dimensions

[Lilya]

ok.. thanks a lot!

[madhan ravi]

Anytime :) , if you find it helpful make sure to accept the answer.