# fshift 1.0

OS : Windows / Linux / Mac OS / BSD / Solaris

Script Licensing : Freeware

Created : Oct 15, 2007

Downloads : 5

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## FSHIFT shifts the elements in a vector by a given ...

fshift by Francois Bouffard shifts the elements in a vector by a given number of elements, as circshift does. However, a non-integer shift value can be used, in which case the elements are shifted along the perfect (sinc-based) interpolation of the periodisation of the vector. For integer shift values, fshift 1.0 is equivalent to CIRCSHIFT to machine precision.

The syntax to fshift [fshift1.0.exe] is slightly different from CIRCSHIFT (fshift [fshift1.0.exe] expects only vector for its first argument and a scalar for its second argument). Also, the second arguments produces a shift in the opposite direction of CIRCSHIFT to be consistent with the usual statement of the shift property of the Fourier transform.

fshift - 0MB works by introducing a linear phase into the vector's DFT. As such, if there is a discontinuity between the first and last elements of the input vector, the output vector may present significant ringing.

The syntax to fshift [fshift1.0.exe] is slightly different from CIRCSHIFT (fshift [fshift1.0.exe] expects only vector for its first argument and a scalar for its second argument). Also, the second arguments produces a shift in the opposite direction of CIRCSHIFT to be consistent with the usual statement of the shift property of the Fourier transform.

fshift - 0MB works by introducing a linear phase into the vector's DFT. As such, if there is a discontinuity between the first and last elements of the input vector, the output vector may present significant ringing.

**• MATLAB Release: R13**

**Demands:****fshift 1.0 scripting tags:**matlab mathematics, fshift, shift mathematics, elements, vector, matlab shift, circshift.

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