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Thread Subject:
Undefined function or method 'hessian' for input arguments of type 'char'.

Subject: Undefined function or method 'hessian' for input arguments of type 'char'.

From: Antony zerrar

Date: 15 Aug, 2008 16:18:02

Message: 1 of 4

I have been running a garch type model and try to generate
the standard errors from the reverse hessian.

hess = hessian('skew_garchlikelihood',parameters,data,p , q,
m,stdEstimate);

and have been receiving this error any ideas?

Undefined function or method 'hessian' for input arguments
of type 'char'.

Subject: Undefined function or method 'hessian' for input arguments of type 'char'.

From: Matt Fig

Date: 15 Aug, 2008 16:44:03

Message: 2 of 4

help hessian

...not found

help hess

returns help!


So either hessian is a toolbox (or custom) function from a
toolbox neither you nor I have, or you meant hess.

Subject: Undefined function or method 'hessian' for input arguments of type 'char'.

From: Paul

Date: 29 Jul, 2009 15:58:03

Message: 3 of 4

I got a similar error and it was because I had a space in the m-file name.

Subject: Undefined function or method 'hessian' for input arguments of type 'char'.

From: Sunil

Date: 5 Apr, 2011 01:43:04

Message: 4 of 4

I was also receiving similar error messages, removing the spaces from m-file name works.


"Antony zerrar" wrote in message <g84a7p$po8$1@fred.mathworks.com>...
> I have been running a garch type model and try to generate
> the standard errors from the reverse hessian.
>
> hess = hessian('skew_garchlikelihood',parameters,data,p , q,
> m,stdEstimate);
>
> and have been receiving this error any ideas?
>
> Undefined function or method 'hessian' for input arguments
> of type 'char'.

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