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How can I solve this error when I use Trapz ?

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ibrahim alzoubi
ibrahim alzoubi 2020-4-17
评论： Ameer Hamza 2020-4-17
I keep getting this error when I run my program.
err = 1-y; %Define error signal
t = 0 : 0.01 :30;
ise = trapz (1,err.^2);
-------
Error using trapz (line 47)
Dimension argument must be a positive integer scalar within indexing range.
Undefined operator '.^' for input arguments of type 'timeseries'.
y here is output data from a block diagarm simulink.
any solutions?

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Ameer Hamza
Ameer Hamza 2020-4-17
Try this
err = 1 - y.Data; %Define error signal
ise = trapz(y.Time, err.^2);

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