pabs.m

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function pabs( varargin )
figure;
hold on;
for i=1:nargin
    sig = varargin{i};
    try
        % Try to generate a time axis if signal_interface
        t = genTimeAxisSig(varargin{i});
        plot(t, abs(sig(:,:)).^2);
        xlabel('Time [s]');
    catch e
        % Otherwise just plot, both signal_interface or vector
        plot(abs(sig(:,:)).^2);
        xlabel('Time [samples]');
    end
    
end
hold off;
ylabel('Power [W]');
title('Power envelope');
end