As the output of function kalman ，what is the kalmf ？

When I use the function kalman , we know the results of kalmf are state space system . So how can I get the optimal estimate y from the kalmf . And the example of Kalman filtering in MATLAB has used parallel and feedback to simulate the response of Kalman filter that is difficult to me . But I just wanna to processing my data by Kalman filtering.Thank you for attention!

[KALYAN ACHARJYA]

What type of data?

[wei zhou]

Thank you for answering！My trouble is that using Kalman filter to process the discrete time domain data .Such as input is x=[1 1.1 0.9 1 4 1.2 0.9 5] ,the output is y=[1 1.1 0.9 1 1 1.1 0.9 1] . Eliminating the minority like 4 and replace them with the majority like 1 .

[wei zhou]