[Scilab-users] fft

[Federico Miyara]

Claus,

I recall that I had had a similar problem in certain occasion. The 
reason was that when installing Scilab I had selected an option to use a 
version of the FFT which, since it was much larger, I thought would be 
more complete, or faster... but it didn't work. Try to re-install Scilab 
and choose the default version of the FFT engine. It is good enough... 
and works!

Regards,

Federico Miyara

On 26/11/2020 15:24, Claus Futtrup wrote:
> Hi there
>
> The 2D example from the help pages also crashes Scilab.
>
> Maybe my Scilab installation is broken - the FFT part? I can't 
> remember, but I think I installed the Intel Math Kernel with 
> everything. My computer is a Lenovo T480 with Intel Core i7 processor. 
> I have the following installed:
>
> C:\Program Files\scilab-6.1.0>dir /S /B fft*.*
> C:\Program Files\scilab-6.1.0\bin\fftw
> C:\Program Files\scilab-6.1.0\bin\fftw.dll
> C:\Program Files\scilab-6.1.0\bin\fftw\fftw-readme.txt
> C:\Program Files\scilab-6.1.0\modules\fftw
> C:\Program Files\scilab-6.1.0\modules\fftw\etc\fftw.quit
> C:\Program Files\scilab-6.1.0\modules\fftw\etc\fftw.start
>
> Cheers,
> Claus
>
> On 26-11-2020 19:19, Claus Futtrup wrote:
>>
>> Hi Scilabers
>>
>> I'm trying to understand how to use the FFT function in Scilab. I'm 
>> using v. 6.1.0 on a Windows 10 machine.
>>
>> This crashes Scilab:
>> y =  linspace(1,256,256) x = fft(y)
>>
>> BTW, the example in the online help (https://help.scilab.org/docs/6.1.0/en_US/fft.html) also crashes Scilab:
>>
>> sample_rate=1000; t = 0:1/sample_rate:0.6; N=size 
>> <https://help.scilab.org/docs/6.1.0/en_US/size.html>(t,'*'); //number 
>> of samples s=sin 
>> <https://help.scilab.org/docs/6.1.0/en_US/sin.html>(2*%pi*50*t)+sin 
>> <https://help.scilab.org/docs/6.1.0/en_US/sin.html>(2*%pi*70*t+%pi/4)+grand 
>> <https://help.scilab.org/docs/6.1.0/en_US/grand.html>(1,N,'nor',0,1); 
>> y=fft <https://help.scilab.org/docs/6.1.0/en_US/fft.html>(s);
>> Cheers,
>> Claus
>
>
>
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