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Scilab help >> Compatibility Functions > mtlb_fft


Matlab fft emulation function


Matlab and Scilab fft behave differently in some particular cases:

  • With one input parameter: If input is a scalar or vector Scilab equivalent for Matlab fft is fft(...,-1) else if input is a matrix Scilab equivalent for Matlab fft is fft(...,-1,2,1)

The function mtlb_fft(X[,n,[job]]) is used by mfile2sci to replace fft(X[,n,[job]]) when it was not possible to know what were the inputs while porting Matlab code to Scilab. This function will determine the correct semantic at run time. If you want to have a more efficient code it is possible to replace mtlb_fft calls:

  • If X is a scalar or a vector mtlb_fft(X,-1) may be replaced by fft(X,-1)

  • If X is a matrix mtlb_fft(X,-1) may be replaced by fft(X,-1,2,1)

Caution: mtlb_fft has not to be used for hand coded functions.


  • V.C.
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Last updated:
Thu May 12 11:44:29 CEST 2011