Check for missing argument or incorrect argument data type in call to function 'smooth'.

Hi all,

the above error emerges also when I try the ssimple toy example in the help of ssmooth function. I am on Mac OSX Catalina and using R2020b.

Why iss this happening?

Thank you,

Federico

[Uday Pradhan]

Hi, could you please share a minimal example to reproduce the error?

[Jan]

The message tells you, that there is a problem with calling the function. Then show us, how you call the function. What are the inputs?

Answer 1

[Jan]

Do you call the built-in function smooth or did you shadow it with a user-defined function? See:

which smooth -all

Please post a small working example. Does the message occur for this also:

smooth(rand(1, 100))

[Grace Wang]

Hi Jan, I got the same problem and I don't know how to solve. Could you please help me with that? Thank you in advance!

When I run the code you recommend, I got:

>> which smooth -all

/Applications/MATLAB_R2021a.app/toolbox/econ/econ/@ssm/smooth.m % ssm method

/Applications/MATLAB_R2021a.app/toolbox/econ/econ/@msVAR/smooth.m % msVAR method

/Applications/MATLAB_R2021a.app/toolbox/econ/econ/@statespace/smooth.m % statespace method

/Applications/MATLAB_R2021a.app/toolbox/econ/econ/@dssm/smooth.m % dssm method

>>

>> smooth(rand(1, 100))

Check for incorrect argument data type or missing argument in call to function

'smooth'.

[Walter Roberson]

You do not have a smooth function for type double. Perhaps you are missing Curve Fitting Toolbox

[Grace Wang]

Thank you Walter! I install the Curve Fitting Toolbox, and the problem is solved.

Answer 2

[federico nutarelli]

Hi all thank you for answering the question above. I basically forgot to install the curve fitting package. So I get back to the adds-in and installed it on my current matlab version.

Sorry for any inconvenience