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<div class="moz-cite-prefix">Le 06/11/2018 à 10:52, Samuel Gougeon a
écrit :<br>
</div>
<blockquote type="cite"
cite="mid:0fa4b4f7-4e46-6b00-300c-ed108dc0780e@free.fr">
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<div class="moz-cite-prefix">Le 10/10/2018 à 12:39, <a
class="moz-txt-link-abbreviated"
href="mailto:amonmayr@laas.fr" moz-do-not-send="true">amonmayr@laas.fr</a>
a écrit :<br>
</div>
<blockquote
cite="mid:98348825-4536-9821-b612-010ae7a0495f@laas.fr"
type="cite">Le 10/10/2018 à 08:47, Samuel Gougeon a écrit : <br>
<blockquote type="cite">Le 09/10/2018 à 21:52, antoine
monmayrant a écrit : <br>
<blockquote type="cite">Hello Samuel, <br>
<br>
Sorry I might not have made myself clear: fft and fftshift
provide the ability to perform transform along only one of
the dimensions of a multidimensional array. <br>
Something like S(x,y,z) --[FFT along 3rd dim]-->
ffthift(ffft(S(x,y,z), -1,3),3)=Ŝ(x,y,kz). <br>
In that case, you need to perform fft and eventually
fftshift along only the dimension of the transform. <br>
ifftshift should also provide the same possibility to
perform the inverse transform: Ŝ(x,y,kz) --[IFFT along 3rd
dim]--> iffthift(ffft(Ŝ(x,y,kz), +1,3),3)=S(x,y,z). <br>
<br>
This is a basic signal processing requirement in my field. <br>
</blockquote>
<br>
Hello Antoine, <br>
<br>
Yes, you are right: in case of directional FFT and odd number
of elements along the chosen direction, ifftshift can't
presently be used. <br>
Could you please post the same remark on bugzilla? This
bug/wish is not yet reported. <br>
</blockquote>
Done: <a class="moz-txt-link-freetext"
href="http://bugzilla.scilab.org/show_bug.cgi?id=15799"
moz-do-not-send="true">http://bugzilla.scilab.org/show_bug.cgi?id=15799</a>
<br>
</blockquote>
<br>
This complementary feature is now implemented and <a
href="https://codereview.scilab.org/20573"
moz-do-not-send="true">proposed for Scilab 6.0.2 there</a>.<br>
</blockquote>
Nice!<br>
<blockquote type="cite"
cite="mid:0fa4b4f7-4e46-6b00-300c-ed108dc0780e@free.fr"> <br>
BR<br>
Samuel<br>
<br>
<br>
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<pre class="moz-signature" cols="72">--
+++++++++++++++++++++++++++++++++++++++++++++++++++++++
Antoine Monmayrant LAAS - CNRS
7 avenue du Colonel Roche
BP 54200
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email : <a class="moz-txt-link-abbreviated" href="mailto:antoine.monmayrant@laas.fr">antoine.monmayrant@laas.fr</a>
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