Not only between two data, how can I use dtw to multiple data?

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Junghee 2017-8-5

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https://ww2.mathworks.cn/matlabcentral/answers/351687-not-only-between-two-data-how-can-i-use-dtw-to-multiple-data

评论： June-Woo Kim 2019-8-3

When I use dtw(d1,d2), I get perfectly aligned graph. Actual code:

[d1,i1,i2] = dtw(a1,a2);

a1w = a1(i1); a2w = a2(i2);

After saving a1w and a2w, I'll repeat as many steps as I need to get more warped data.

[d2,i1,i3] = dtw(a1,a3);

a3w = a3(i3);

After getting these, when I plot a1w, a2w, a3w....... they don't align together. Only a1w and a2w would. Unlike the one that you would get after dtw(a1,a3); the graph of a3w won't align correctly with a1w and a2w because a3w is only aligned with a1, but not a2. I tried to use d values to eliminate the offsets, but that doesn't really fix the problem because d values were calculated based on a1, and not a1 and a2, again.

Does anyone know how I can fit and align multiple data in one figure?

Thank you.