matlab mean
时间: 2023-10-31 07:30:48 浏览: 29
The mean function in MATLAB calculates the average value of a set of numerical data. The syntax for the mean function is:
mean(A)
where A is a vector, matrix or multidimensional array of numerical data. It returns the mean value of all the elements in A.
For example, if we have a vector x = [1 2 3 4 5], then the mean of x can be calculated as:
mean(x)
which returns the value 3.
If we have a matrix Y = [1 2 3; 4 5 6], then we can calculate the mean of each column by specifying the dimension:
mean(Y,1)
which returns the vector [2.5 3.5 4.5] representing the mean of the first column, second column, and third column respectively.
Similarly, we can calculate the mean of each row by specifying the dimension as 2:
mean(Y,2)
which returns the vector [2 5] representing the mean of the first row and second row respectively.