How to extract data out of coi of wcoherence?

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Hashini Wanniarachchi
Hashini Wanniarachchi il 18 Ott 2022
Risposto: Yash il 16 Feb 2025
How to ignore data out of coi (data outside white dashed lines) and just quantify high magnitiude data discarding coi data?

Risposte (1)

Yash
Yash il 16 Feb 2025
Try comparing the y coordinates at a given time stamp to the values present in the coherence matrix and coi vector.
Pseudocode of the same can be like:
% Wavelet coherence and cross-spectrum
[wcoh, wcs, period, coi] = wcoherence(x, y);
% Get the size of the coherence matrix
[rows, cols] = size(wcoh)
% Identify data points outside the cone of influence
coi_indices = zeros(rows, cols);
for i = 1:rows
for j = 1:cols
if wcoh(i,j) < coi(j)
coi_indices(i, j) = 1; % Data point outside the COI (mark that index)
end
end
end

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