Dissimilarity index based on order pattern analysis

DsimOrder Calculate the Dissimilarity index based on order pattern analysis

% DsimOrder Calculate the Dissimilarity index based on order pattern analysis
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% Input: X: 1xn time series;
% Y: 1xm time series;
% M: the embedding dimension (common M=3,4 or 5)
% t: delay time of order pattern analysis,
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% Output:
% Dsim: Dissimilarity index between X and Y
% PEx and PEy: permutation entropy of X and Y

% Ref: Ouyang, G., et al. (2010). "Ordinal pattern based similarity analysis for EEG recordings." Clin Neurophysiol 121(5): 694-703.
% revise time: July 18 2013, Ouyang, Gaoxiang, Yan, Jiaqing and Li, Xiaoli