Software Systems Scientific Computing

The Elements of MATLAB Style by Richard K. Johnson

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By Richard K. Johnson

The weather of MATLAB type is a consultant for either new and skilled MATLAB programmers. It offers a entire selection of criteria and guidance for developing reliable MATLAB code that may be effortless to appreciate, improve, and preserve. it truly is written for either participants and people operating in groups during which consistency is important. this is often the one ebook dedicated to MATLAB sort and most sensible programming practices, targeting how MATLAB code should be written as a way to maximize its effectiveness. simply as Strunk and White's the weather of fashion offers principles for writing within the English language, this e-book offers conventions for formatting, naming, documentation, programming and checking out. It contains many concise examples of right and unsuitable utilization, in addition to insurance of the newest language gains. the writer additionally offers tips on use of the built-in improvement surroundings beneficial properties that support produce greater, extra constant software program.

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Use prefixes such as get/set, add/subtract, create/destroy, start/stop, insert/delete, increment/decrement, begin/end, open/close, show/hide, suspend/resume 75. Be Selective in the Use of Numbers at the Ends of Names Do not use a number at the end of a function name to indicate revision. This would require continual modification of calling function code with each function name revision. Such usage would also raise the issue for the reader of whether older versions are of value. Avoid foo1, foo2, foo3 Limit numbers at the end of function names to current functions that have different arguments, especially when the functions work for differing dimensionality.

For example, interp, interp2, interp3 76. Use Numbers Inside Function Names Only for Common Conventions It is common practice to use the numeral 2 in place of to. The use of other numbers is unusual: str2mat, struct2cell 42 THE ELEMENTS OF MATLAB STYLE It can be a better practice to replace functions that would use this naming convention with functions that take advantage of polymorphism. For example, daily2monthly, yearly2monthly might be better as a single function tomonthly 77. Avoid Unintentional Shadowing In general, function names should be unique.

The code itself should make clear what it does. Write comments to describe why or how the code works. Comments addressing why are especially important for code that implements business logic or is domain-specific. Replace c = zscore(r); % Apply zscore. with % Center and scale the data. normalizedRadius = zscore(radius); 97. Be Sure that Comments Agree with the Code Take care that the comment is consistent with the code. Make the action described in the comment consistent with what the code does.

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