How to apply filter to smooth data?

size(A)=[512 1].

What is the function to smooth 'A' with either moving average or least square method?

Answer 1

[Image Analyst]

One way:

windowSize = 7; % Bigger number = more smoothing.
smoothedSignal = conv(noisySignal, ones(windowSize, 1)/windowSize, 'same');

Answer 2

[Sean de Wolski]

doc smooth

If you have the Curve Fitting Toolbox.

[Yun Inn]

I don't have Curve Fitting Toolbox. Alternative?

[Sean de Wolski]

A few options would be to use filter() or conv() or a for-loop.

Or you could purchase the CFT :)