Re: 2D Fourier and Plot3D???
- To: mathgroup at smc.vnet.net
- Subject: [mg28186] Re: [mg28111] 2D Fourier and Plot3D???
- From: Tomas Garza <tgarza01 at prodigy.net.mx>
- Date: Tue, 3 Apr 2001 02:38:04 -0400 (EDT)
- References: <200103310758.CAA13042@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
I'm sure there is a simple way to do it. Could you please send your data
from the very beginning and a copy of your notebook?
Tomas Garza
Mexico City
----- Original Message -----
From: "Patrick Ladam" <ladam at smbh.smbh.univ-paris13.fr>
To: mathgroup at smc.vnet.net
Subject: [mg28186] [mg28111] 2D Fourier and Plot3D???
> Hello to all,
>
> I am desperatly trying to have a display of a 2D Fourier transform of
> data in vain...
> I don't have my notebook here but here is what I have done:
> I was able to generate a 2D list of data (each list having 2^n data for
> discrete FT) using:
>
Abs[Fourier[{{my_function_of_x},{my_function_of_y}},{(x,0,255),(y,0,255)}]]
>
> it gave me a 2D list looking like:
> {{value_a, value_b, ....},{value_w, value_z,.... }}
> each list having 256 elements
> Now when I try to have a 3D plot of this it won't work
> I tried a huge amount of combinations to get this 3D plot using
> Do[Plot3D[blablabla]] and it never
> worked....
> It looks to me that the arguments expected by Plot3D or ListPlot3D are
> uncompatible with those
> of the Fourier command.
> There is I guess a way of doing this sort of thing so if someone has
> some guidance I would really
> appreciate (I have spent hours and hours with no success...)
> A piece of code would be the best if you have one under the arm....
>
> ThanX a lot
>
> Bye
>
> --
> ------------------------------------------------------------------
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