Piecewise evaluation of mean absolute error an plotting

Hello everybody,

I have two vectors, A and B. A represents the reference and B a noisy reconstruction.

I want to calculate the mean absolute error, MAE, in groups in a range of 20 units.

Then, I want to plot(A, MAE) using this piecewise evaluation.

How can I do this?

Joaquim

Answer 1

[Matt J]

Something like the following, I suppose,

   MAE =  conv(abs(A(:)-B(:)),  ones(20,1)/20  ,'valid');

   plot(MAE)

[Joaquim]

I want to do plot(A,MAE) but MAE and A seem to have different lenghts

[Matt J]

They should have different lengths. The number of length=20 sections of A and B is shorter than A and B.

[Matt J]

You could try doing conv(...,'same') instead of 'valid'.