mean square error expected value

how to write this in matlab?

Rz=E[z*z transpose]

and

Rz=E[(z-z bar)(z-z bar)tranpose]

Answer 1

[Mahdiyar]

Hi nine

If you are looking for Root Mean Square you can simply use command "rms". for more information write the following command in Command windows.

doc rms

Regards.

Answer 2

[Star Strider]

Use the mean function and the complex-conjugate-transpose operator ('):

Rz = mean(z(:)*z(:)');

and:

Rz = mean((z(:)-zbar)*(z(:)-zbar)');

The subscript colon ‘z(:)’ forces ‘z’ to be a column vector, so you will not get an error if you give it ‘z’ a a row vector.

Answer 3

[ojasvi]

hi, i have an emg data. first i rectify the signal and then i have to the RMS, how i can i do this. any code for help

Answer 4

[Image Analyst]

If you have the Image Processing Toolbox, simply use the function immse(). It works for 1-D "images/signals, as well as 2D images.