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| Author |
Message |
edmont
Joined: 19 Nov 2012
Posts: 46
|
 Posted: Thu 07 Dec 2017, 12:58 Post subject:
 Mayavi2 3d example
Subject description: 3d frequency shown . |
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This is a non trivial example of how to use Mayavi2 , from a python script ,
to display a fairly large amount of data .
Not certain how long this will take on your machine , you might want to
change the number of samples from 64 to 32 .
This runs okay with python 2.7.x.x .
| Code: |
#
# fftc3d.py
#
# (c) 2017 , edmont , sciwiseg@gmail.com
#
#
# Three dimensional plot of centered 3d fft .
#
#
#
import numpy as np
from mayavi.mlab import *
n=64
a = np.zeros((n, n, n))
#
# Spacial domain 3d data , this represents a cube .
#
for i in range(0 , n/6):
for j in range(0,n/4):
for k in range(0,n/2):
a[i,j,k] = 1
b = np.fft.fftn(a)
c = np.abs(b)
c = np.fft.fftshift(c)
#
# Frequency domain 3d data .
#
# With a more complicated result use a lower number of contours .
#
#
obj = contour3d(c, contours=40, transparent=True,opacity=0.5)
from mayavi import mlab
mlab.show()
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