From: Christopher on
Hi!
I tried to use "fftgui" as described in the Section "Fourier Transforms" ->"Visualizing the DFT" in the Help Browser. But when i try to do the examples, Matlab says the following:
EDU>> x = [ones(1,25),-ones(1,25)];
EDU>> fftgui(x)
??? Undefined function or method 'fftgui' for input arguments of type 'double'.
Any ideas?
From: Lucas GarcĂ­a on
Hi Christopher,

Apparently, MATLAB is not able to find 'fftgui'. It could be due to several reasons: the directory where fftgui.m is stored is not in your MATLAB path or you don't have that function. However, you can download fftgui.m from here:
http://www.mathworks.com/matlabcentral/fileexchange/4822-using-numerical-computing-with-matlab-in-the-classroom

Hope it helps.
Lucas

"Christopher " <christopher.saloman(a)gmail.com> wrote in message <hp045r$h2$1(a)fred.mathworks.com>...
> Hi!
> I tried to use "fftgui" as described in the Section "Fourier Transforms" ->"Visualizing the DFT" in the Help Browser. But when i try to do the examples, Matlab says the following:
> EDU>> x = [ones(1,25),-ones(1,25)];
> EDU>> fftgui(x)
> ??? Undefined function or method 'fftgui' for input arguments of type 'double'.
> Any ideas?
From: Steven Lord on

"Christopher " <christopher.saloman(a)gmail.com> wrote in message
news:hp045r$h2$1(a)fred.mathworks.com...
> Hi!
> I tried to use "fftgui" as described in the Section "Fourier
> Transforms" ->"Visualizing the DFT" in the Help Browser. But when i try
> to do the examples, Matlab says the following:
> EDU>> x = [ones(1,25),-ones(1,25)];
> EDU>> fftgui(x)
> ??? Undefined function or method 'fftgui' for input arguments of type
> 'double'.
> Any ideas?

Are you referring to this page from the documentation?

http://www.mathworks.com/access/helpdesk/help/techdoc/math/brenr5t-1.html#brenxms-1

If so, read the Note in the blue box carefully -- it tells you exactly what
you need to do to use FFTGUI.

--
Steve Lord
slord(a)mathworks.com
comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ


From: Christopher on
"Steven Lord" <slord(a)mathworks.com> wrote in message <hp0ev5$ohp$1(a)fred.mathworks.com>...
>
> "Christopher " <christopher.saloman(a)gmail.com> wrote in message
> news:hp045r$h2$1(a)fred.mathworks.com...
> > Hi!
> > I tried to use "fftgui" as described in the Section "Fourier
> > Transforms" ->"Visualizing the DFT" in the Help Browser. But when i try
> > to do the examples, Matlab says the following:
> > EDU>> x = [ones(1,25),-ones(1,25)];
> > EDU>> fftgui(x)
> > ??? Undefined function or method 'fftgui' for input arguments of type
> > 'double'.
> > Any ideas?
>
> Are you referring to this page from the documentation?
>
> http://www.mathworks.com/access/helpdesk/help/techdoc/math/brenr5t-1.html#brenxms-1
>
> If so, read the Note in the blue box carefully -- it tells you exactly what
> you need to do to use FFTGUI.
>
> --
> Steve Lord
> slord(a)mathworks.com
> comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
>

Yes i reffered to this page, but fftgui was not there as described. Thats perhaps because i use the mac version of Matlab.. But the advice from Lucas solved my problem!
Thanks!