Matlab Tutorials » Functions http://www.matlabtutorials.com Matlab tutorials and examples Mon, 10 May 2010 10:55:51 +0000 en hourly 1 http://wordpress.org/?v=3.2.1 Reading, Writing, and Querying Graphics Image Files http://www.matlabtutorials.com/documents/reading-writing-and-querying-graphics-image-files.html http://www.matlabtutorials.com/documents/reading-writing-and-querying-graphics-image-files.html#comments Thu, 29 Apr 2010 08:20:27 +0000 matlabtutorials http://www.matlabtutorials.com/?p=449 Working with Image Formats

In its native form, a graphics file format image is not stored as a MATLAB matrix, or even necessarily as a matrix. Most graphics files begin with a header containing format-specific information tags, and continue with bitmap data that can be read as a continuous stream. For this reason, you cannot use the standard MATLAB I/O commands load and save to read and write a graphics file format image. Read More

Matlab Tags: Functions, ginput, Graphics, image, imagesc, imfinfo, imread, imwrite, ind2rgb, load, matlab, rbbox, save]]> http://www.matlabtutorials.com/documents/reading-writing-and-querying-graphics-image-files.html/feed 0 Comparing Handle and Value Classes http://www.matlabtutorials.com/documents/comparing-handle-and-value-classes.html http://www.matlabtutorials.com/documents/comparing-handle-and-value-classes.html#comments Fri, 23 Apr 2010 15:52:56 +0000 matlabtutorials http://www.matlabtutorials.com/?p=392 Why Select Handle or Value

MATLAB support two kinds of classes — handle classes and value classes. The kind of class you use depends on the desired behavior of the class instances and what features you want to use. Read More

Matlab Tags: Arrays of Handle Objects, Behavior of MATLAB Built-In Classes, Classdef, Defining Events and Listeners — Syntax and Techniques, delete, Dynamic Properties — Adding Properties to an Instance, Functions, Graphics, Handle Class Delete Methods, Handle Class Methods, How to Initialize Property Values, Implementing a Set/Get Interface for Properties, matlab, Memory Allocation for Arrays, Passing [...]]]> http://www.matlabtutorials.com/documents/comparing-handle-and-value-classes.html/feed 0 Using the Editor and Debugger with Classes http://www.matlabtutorials.com/documents/using-the-editor-and-debugger-with-classes.html http://www.matlabtutorials.com/documents/using-the-editor-and-debugger-with-classes.html#comments Tue, 20 Apr 2010 22:15:00 +0000 matlabtutorials http://www.matlabtutorials.com/?p=366 Referring to Class Files

Define classes in M-files just like scripts and functions. To use the editor or debugger with a class file, use the full class name. For example, suppose the file for a class, myclass.m is in the following location: Read More

Matlab Tags: class files, dbstop, Debugger, edit, Editor, Examples, Functions, m-files, matlab, Modifying and Reloading Classes, packFunction, reference]]> http://www.matlabtutorials.com/documents/using-the-editor-and-debugger-with-classes.html/feed 0 Modifying and Reloading Classes http://www.matlabtutorials.com/documents/modifying-and-reloading-classes.html http://www.matlabtutorials.com/documents/modifying-and-reloading-classes.html#comments Tue, 20 Apr 2010 20:58:47 +0000 matlabtutorials http://www.matlabtutorials.com/?p=368 Ensuring MATLAB Uses Your Changes

There is only one class definition for a given class in MATLAB at any given time. When you create an instance of a class, MATLAB loads the class definition. So as long as instances of that class exist, MATLAB does not reload the class definition. Read More

Matlab Tags: clear, Clear Classes, close, close_system, Functions, Graphics, Graphics Objects, Handle, matlab, mlock, munlock, Persistent, rmappdata, simulink, Simulink Models, variables]]> http://www.matlabtutorials.com/documents/modifying-and-reloading-classes.html/feed 0 Finding maximum and minimum values in arrays http://www.matlabtutorials.com/examples/finding-maximum-and-minimum-values-in-arrays.html http://www.matlabtutorials.com/examples/finding-maximum-and-minimum-values-in-arrays.html#comments Thu, 25 Mar 2010 23:55:55 +0000 matlabtutorials http://www.matlabtutorials.com/?p=137 Let’s write a function file range.m that calculates the difference between the maximum and minimum value in a vector. The file should return a reply. Open an edit window. Create a function file like the one below. Read More

Matlab Tags: Array Operations, arrays, Examples, exercise, Functions, m-file, matlab, matlab vectors, maximum, minumum, range, vector]]> http://www.matlabtutorials.com/examples/finding-maximum-and-minimum-values-in-arrays.html/feed 0 Analysis of Functions, Interpolation, Curve Fitting, Integrals and Differential Equations 2 http://www.matlabtutorials.com/documents/analysis-of-functions-interpolation-curve-fitting-integrals-and-differential-equations-2.html http://www.matlabtutorials.com/documents/analysis-of-functions-interpolation-curve-fitting-integrals-and-differential-equations-2.html#comments Tue, 23 Mar 2010 02:01:13 +0000 matlabtutorials http://www.matlabtutorials.com/?p=127 Localize minima and maxima of functions

Let us try to find the local minima and maxima for the function func(x). The interval of interest is [-6 0]. The algorithms are iterative. There are 2 methods to use. The first one decides x in a given interval, and the second one looks for x around an initial guess. To decide the maxima we are looking for an x that minimizes the negative function: -func(x). Read More

Matlab Tags: Analysis of Functions, applications, Command Window, curve, Define, differential, end, equations, Examples, fitting, for, format, full, Functions, grid, help, hold, if, inf, info, integral, integrals, integrand, interpolation, legend, load, matlab, mesh, meshgrid, minus, plot, polynomial, rand, randn, rem, round, sign, sum, title, tutorials, ver, what]]> http://www.matlabtutorials.com/documents/analysis-of-functions-interpolation-curve-fitting-integrals-and-differential-equations-2.html/feed 0 Analysis of Functions, Interpolation, Curve Fitting, Integrals and Differential Equations http://www.matlabtutorials.com/documents/analysis-of-functions-interpolation-curve-fitting-integrals-and-differential-equations.html http://www.matlabtutorials.com/documents/analysis-of-functions-interpolation-curve-fitting-integrals-and-differential-equations.html#comments Tue, 23 Mar 2010 01:41:32 +0000 matlabtutorials http://www.matlabtutorials.com/?p=118 In this tutorial we will deal with analysis of functions, interpolation, curve fitting, integrals and differential equations. Firstly, we will need to use polynomials and therefore we have to be familiar with the representation of these. A general polynomial looks like: p(x)=anxn + an-1xn-1 +……….+ a1x + a0 and is represented by a vector in Matlab:
p=[ an an-1 ....... a1 a0 ] Read More

Matlab Tags: Analysis of Functions, continue, curve, Define, differential, end, equations, fitting, for, full, Functions, grid, gui, if, inf, integral, integrals, interpolation, load, matlab, more, plot, polynomial, quit, rem, return, sign, sum, title, tutorials, ver, what, which, xlabel, zeros]]> http://www.matlabtutorials.com/documents/analysis-of-functions-interpolation-curve-fitting-integrals-and-differential-equations.html/feed 0 Controlling Command Window Input and Output http://www.matlabtutorials.com/documents/controlling-command-window-input-and-output.html http://www.matlabtutorials.com/documents/controlling-command-window-input-and-output.html#comments Thu, 18 Mar 2010 22:52:28 +0000 matlabtutorials http://www.matlabtutorials.com/documents/controlling-command-window-input-and-output.html The format Function

The format function controls the numeric format of the values displayed. The function affects only how numbers are displayed, not how MATLAB software computes or saves them. Here are the different formats, together with the resulting output produced from a vector x with components of different magnitudes. Read More

Matlab Tags: Command History, Command Window, continue, Controls, Define, edit, end, for, format, fprint, fprintf, Functions, if, inf, info, magic, matlab, more, return, round, save, sign, sprintf, sqt, statements, ver]]> http://www.matlabtutorials.com/documents/controlling-command-window-input-and-output.html/feed 0 bsxfun http://www.matlabtutorials.com/functions/bsxfun.html http://www.matlabtutorials.com/functions/bsxfun.html#comments Sun, 06 Dec 2009 07:10:20 +0000 matlabtutorials http://www.matlabtutorials.com/?p=114 bsxfun – Apply element-by-element binary operation to two arrays with singleton expansion enabled
Syntax Read More

Matlab Tags: array, arrayfun, divide, division, Examples, Functions, if, ldivide, magic, matlab, mean, minus, rdivide, rem, repmat, return, sum, vectors, ver]]> http://www.matlabtutorials.com/functions/bsxfun.html/feed 0 arrayfun http://www.matlabtutorials.com/functions/arrayfun.html http://www.matlabtutorials.com/functions/arrayfun.html#comments Sat, 05 Dec 2009 19:04:34 +0000 matlabtutorials http://www.matlabtutorials.com/?p=110 arrayfun – Apply function to each element of array Read More

Matlab Tags: array, Array Operations, arrayfun, cell2mat, cellfun, end, Examples, for, Functions, function_handle, if, load, matlab, mean, more, rand, rem, return, sign, spfun, structfun, ver, which]]> http://www.matlabtutorials.com/functions/arrayfun.html/feed 0