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Code Listing by Zhihua Zhang

Code 1-2 of 2   






function [g] = FFTPF1D (X,binsize, f, P)
Discrete Fourier Transform Low/High Pass Filter.
% This is a simply implement of such a filter for a given 1-D data.
X: the array of you data, each data point is a bin of signal
binsize: the bin size in your data data
f: the cutoff of wave length,
P: 1, or 0, true or false : true, low pass, which eliminating higher
than f frequence signals, false, high pass,...



For a given level, this program generate a space filling curve as a N X 3 matrix which can be draw as the actually figure by plot3.