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From: Corey on 11 Jan 2010 15:40
I've been trying to do a linear regression. I try to use the functio regress I get the following error.??? Undefined function or method 'regress' for input arguments of type 'double'.
for example:
>> y = [1 2 3 4]

y =

1 2 3 4

>> x = [1 2 3 4]

x =

1 2 3 4

>> regress (y',x')
??? Undefined function or method 'regress' for input arguments of type 'double'.
From: Andy on 11 Jan 2010 15:51
"Corey " <cgw2102(a)columbia.edu> wrote in message <hig2bj$igu$1(a)fred.mathworks.com>...
> I've been trying to do a linear regression. I try to use the functio regress I get the following error.??? Undefined function or method 'regress' for input arguments of type 'double'.
> for example:
> >> y = [1 2 3 4]
>
> y =
>
> 1 2 3 4
>
> >> x = [1 2 3 4]
>
> x =
>
> 1 2 3 4
>
> >> regress (y',x')
> ??? Undefined function or method 'regress' for input arguments of type 'double'.

Do you have the Statistics Toolbox? Type 'ver' at the command line to see.
From: Wayne King on 11 Jan 2010 15:52
"Corey " <cgw2102(a)columbia.edu> wrote in message <hig2bj$igu$1(a)fred.mathworks.com>...
> I've been trying to do a linear regression. I try to use the functio regress I get the following error.??? Undefined function or method 'regress' for input arguments of type 'double'.
> for example:
> >> y = [1 2 3 4]
>
> y =
>
> 1 2 3 4
>
> >> x = [1 2 3 4]
>
> x =
>
> 1 2 3 4
>
> >> regress (y',x')
> ??? Undefined function or method 'regress' for input arguments of type 'double'.

Hi Corey, do you have the Statistics Toolbox in your installation? If you enter

>>ver

does the output contain an entry for that toolbox?

Wayne
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