#MATLAB COMMENT SYMBOLS HOW TO#
#MATLAB COMMENT SYMBOLS PORTABLE#
#MATLAB COMMENT SYMBOLS CODE#

Such text is often found at the end of an M file though also can be found at the beginning. MATLAB will output the comments leading up to the function definition or the first block of comments inside a function definition when you type:Īll of MATLAB's own functions written in MATLAB are documented this way as well.Ĭomments can also be used to identify authors, references, licenses, and so on.

#MATLAB COMMENT SYMBOLS HOW TO#

It is common and highly recommended to include as the first lines of text a block of comments explaining what an M file does and how to use it. % Calculate average velocity, assuming acceleration is constant Doing this is a good idea both for yourself and for others who try to read your code.

#MATLAB COMMENT SYMBOLS CODE#

E.g.Ĭomments are useful for explaining what function a certain piece of code performs especially if the code relies on implicit or subtle assumptions or otherwise perform subtle actions. */ in languages like C or C++, via the % contains any other text (except white spaces). MATLAB also supports multi-line comments, akin to /*. Select the code you wish to comment or uncomment, and then press Ctrl-R ( ⌘-/ for Mac) to place one '%' symbol at the beginning of each line and Ctrl-T ( ⌘-T for Mac) to do the opposite. There are two useful keyboard shortcuts for adding and removing chunks of comments. In the MATLAB Editor, commented areas are printed in green by default, so they should be easy to identify. The % character itself only tells the interpreter to ignore the remainder of the same line.

#MATLAB COMMENT SYMBOLS PORTABLE#

Fundamentals of MATLAB MATLAB Workspace MATLAB Variables *.mat filesĬhapter 2: MATLAB Concepts MATLAB operator Data File I/OĬhapter 3: Variable Manipulation Numbers and Booleans Strings Portable Functions Complex NumbersĬhapter 4: Vector and matrices Vector and Matrices Special Matrices Operation on Vectors Operation on Matrices Sparse MatricesĬhapter 5: Array Arrays Introduction to array operations Vectors and Basic Vector Operations Mathematics with Vectors and Matrices Struct Arrays Cell ArraysĬhapter 6: Graphical Plotting Basic Graphics Commands Plot Polar Plot Semilogx or Semilogy Loglog Bode Plot Nichols Plot Nyquist PlotĬhapter 7: M File Programming Scripts Comments The Input Function Control Flow Loops and Branches Error Messages Debugging M FilesĬhapter 8: Advanced Topics Numerical Manipulation Advanced File I/O Object Oriented Programming Applications and Examples Toolboxes and ExtensionsĬhapter 9: Bonus chapters MATLAB Benefits and Caveats Alternatives to MATLAB What is Octave ? Octave/MATLAB differencesĬomment lines begin with the character '%', and anything after a '%' character is ignored by the interpreter.

On the PC, adding & to the end of the ! command line, as in !dir &, causes the output to appear in a separate window.Chapter 1: MATLAB Introductions. Indicates that the rest of the input line is issued as a command to the operating system. MATLAB displays the first contiguous comment lines in a M-file in response to a help command.Įxclamation point. The percent symbol denotes a comment it indicates a logical end of line. Used after an expression or statement to suppress printing or to separate statements. For multi-statement lines, the comma can be replaced by a semicolon to suppress printing.

Used to separate statements in multistatement lines. Used to separate matrix subscripts and function arguments. Three or more points at the end of a line indicate continuation.Ĭomma. A.(field) and A(i).field, when A is a structure, access the contents of field.Ĭontinuation. See the Arithmetic Operators page.įield access. 314e1 are all the same.Įlement-by-element operations. A quotation mark within the text is indicated by two quotation marks.ĭecimal point. 'any text' is a vector whose components are t he ASCII codes for the characters. X' is the complex conjugate transpose of X. For example, A(,:) = A(,:) interchanges rows 1 and 5 of A. If V has m components and W has n components, then A(V,W) is the m-by- n matrix formed from the elements of A whose subscripts are the elements of V and W. The same indirect subscripting works in matrices. If X has n components, X(n:- 1:1) reverses them. See help paren for more information about ( ). An error occurs if any such subscript is less than 1 or greater than the size of X. The components of V must be integers to be used as subscripts. They are also used to enclose subscripts of vectors and matrices in a manner somewhat more general than usual.

They are used to enclose arguments of functions in the usual way.

Parentheses are used to indicate precedence in arithmetic expressions in the usual way.

Matlab comment symbols