[PD] Dynamic population of a large array

Georg Holzmann grhPD at gmx.at
Tue Jul 27 17:09:36 CEST 2004


For a lot of array-operations you could use VASP from Thomas Grill:


> Hi all,
> I'm trying to build a "spectral delay" and to separate the fft analysis
> into
> "bands" I'm planning on multyplying the output of rfft by arrays (read
> with
> tableread~). These arrays contain as many points as there are fft bins. So
> my
> question is:
> Is there a quick way to populate arrays (1024 points in size) so that
> between
> x-value 'a' and x-value 'b' I have a y-value of 1, while the rest of the
> array
> is set to 0? I also want to be able control the values of a and b, so the
> band
> can be changed dynamically.
> Any help is very appreciated, as I cannot think of a simple
> straigthforward way.
> Thanks,
> Andres
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