tailieunhanh - CRC.Press A Guide to MATLAB Object Oriented Programming May.2007 Episode 1 Part 4

Tham khảo tài liệu ' a guide to matlab object oriented programming episode 1 part 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 34 A Guide to MATLAB Object-Oriented Programming Defining arrays as column vectors is convenient for concatenation and ultimately vectorization. When we add support for object arrays the vectorized code dealing with column arrays will have an easier syntax. Proper concatenation of row arrays across an array of objects is possible but it usually requires a call to vertcat. It is also convenient to store -dimensional arrays as columns. In this case use a reshape call to change the array into the desired shape. Finally standardizing around column vectors as the default internal format makes maintenance much easier. Unless you have a good reason to the contrary always store private arrays as columns. You might also be wondering about the lowercase m at the beginning of each private member variable. The m serves several purposes. Beginning each fieldname with lowercase m identifies the variable as a member variable and such identification is often helpful during code development. The syntax serves as a cue in the same vein as the variable name this and the lowercase c added to the beginning of the class name. It helps remind you that the variable belongs to an object and is private. As with the other cues adding an m is not required. If you discover that it is not useful leave it off. cShape Public Interface It is too early in our study of the MATLAB implementation to do anything fancy. In this chapter we will define a set of member functions capable of implementing the interface however keep in mind that as we learn new techniques we will drop support for some of them. Presently we have two techniques that we can exploit a get and set pair and a switch based on the number of input arguments obtained using nargin. To demonstrate both we will implement the interface for size and scale with get and set pairs and border color with an internal switch. Since the requirements did not dictate names and formats we will take the liberty to define them ourselves. .