This function requires x, y, z y and z to be the same size. So we can only use mesh(x, y, z (:,:,I)) to draw pictures, and if it is written as a cycle, it can also be animated.

Y=[] is to define an empty array with nothing in it.

Y=[y, 1] is to form a matrix array with y and 1 and assign the result to Y.

For example: y = []; , y=[y 1], the result y is 1, once again y = [y 123], and the value of y is [1 1 2 3].

Extended data:

MATLAB consists of a series of tools. These tools are convenient for users to use MATLAB functions and files, and many of them use graphical user interfaces. Including MATLAB desktop and command window, historical command window, editor and debugger, path search and browser for users to browse help, workspace and files.

With the commercialization of MATLAB and the continuous upgrading of the software itself, the user interface of MATLAB is more and more exquisite, closer to the standard interface of Windows, with stronger human-computer interaction and simpler operation. Moreover, the new version of MATLAB provides a complete online query and help system, which greatly facilitates the use of users.

Baidu encyclopedia -MATLAB