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    %% MRA Using Non-Default Wavelet
% Construct an MRA of an ECG signal down to level four using the 'db2'
% wavelet. 
%%

% Copyright 2015 The MathWorks, Inc.

load wecg;
lev = 4;
wtecg = modwt(wecg,'db2',lev);
mra = modwtmra(wtecg,'db2');
%%
% Plot the ECG waveform and the MRA.
subplot(6,1,1)
plot(wecg)
    for kk = 2:lev+2
        subplot(6,1,kk)
        plot(mra(kk-1,:))
    end