error: Undefined function 'nlarxOptions'

When i'm trying to use the following function (nlarxOptions) the following error appears: Undefined function 'nlarxOptions'

Note: I'm using Matlab R2012a

Answer 1

[Walter Roberson]

http://www.mathworks.com/help/ident/ref/nlarxoptions.html

"Introduced in R2015a"

[Mohamed Aboamer]

Matlab R2015a should be used?

[Walter Roberson]

That routine is not available before R2015a.

Possibly before then you could construct your own struct() to pass in. I don't think I have access to the R2012a documentation to review whether options were supported back then. Does your code work if you change "nlarxoptions" to "struct" ? For example, instead of

opts = nlarxoptions('SearchOptionSet', 'Iters', 125);

try

opts = struct('SearchOptionSet', struct('Iters', 125));