[Scilab-users] fft

[Claus Futtrup]

Hi Federico

Thank you for your advice. I guess reinstalling Scilab is what I need to do.

Best regards,
Claus

On 26-11-2020 23:17, Federico Miyara wrote:
>
> 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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