# Double Indexing Matlab

The default is double precision. For commercial applications (including for-profit education services), please contact Prof. For example, Total = 42. The sprintf function behaves like its ANSI C language namesake with these exceptions and extensions. Vectors In MATLAB a vector is a matrix with either one row or one column. Indices in MATLAB cannot be 0, and by default, start with 1. Hint: Use logical indexing and the double square brackets []. Here is a script showing how to index: egindex. The only other possible catch is that Matlab (to a good approximation) basically represents everything as a double matrix. Learn more about matrix, indexing. Matlab Code For Network Intrusion Detection System Codes and Scripts Downloads Free. Note: Use the function isnan to identify NaNs. I found a MatLab program lyaprosen. But when used with large and more complex data structures like MATLAB structures and cell arrays, the comma-separated list can enable you to simplify your MATLAB code. When you write an indexed image using imwrite, MATLAB automatically converts the values if necessary. This example shows how to display folders on your system using the MATLAB disp function on the Python sys. In other words matrix R would be a column matrix of size (50*49)/2. Consider the sample table from above. Use help in MATLAB for more information on how to use any of these commands. Suppose you would like to know how much you can save by cutting down the price of all items by 10%. (See the descriptions),Rome Double monetary Weight 5,40 gr diameter 2 cm Numismatics subalpine b39,Peruvian Mining Smelting and Refining Co Shares 00 Maine USA 1908. • Includes all Matlab code for readers wishing to replicate the figures found throughout the book. Plotting with MATLAB MATLAB is very useful for making scientific and engineering plots. atau langsung dari command window dengan perintah whos >> whos. MATLAB/Octave Description; help. SOS stands for Special Ordered Sets. Every variable in MATLAB® is an array that can hold many numbers. Defining a 4d double. (formerly Bionic Technologies, LLC). For more information on MATLAB, please visit the MathWorks home. 0934 and 0 and i want to convert it to unit8 matrix with values between 0 ans 255. you're feeding it a sym kind, which throws the conversion errors. I have a cell array called Event of 179X59 entries and each element is a <1X14> double. 3 M-ﬁle functions sub2ind Linear index from multiple subscripts. A straight line is a 1st-degree polynomial, so the. Within each table indexing method, you can specify the rows or variables to access by name or by numeric index. Using left division. Correlation determines how much two signals or vectors are similar or different in phase and magnitude. Logical arrays also are created by the relational operators (==,<,>,~, etc. When using this format, you must specify sheet as a string, (for example, Income or Sheet4) and not a numeric index. I want to write a code for an equation (given in link) but I don't know how can I write double summation sign in MATLAB when one variable goes to infinity and other not. See Handle Object Behavior (MATLAB) and Comparison of Handle and Value Classes (MATLAB). When you want to access selected elements of an array, use indexing. In a Java program, the syntax is A[row-1][column-1]. toString() method. I've talked about logical indexing before in some of the linked posts, but recent work makes me want to show it off again. Other than having a different class, the 0 and 1 of type logical behave the same as the 0 and 1 of type double. These functions were developed as part of an SBIR program funded by the National Institute for Neural Disorders and Stroke and it is currently being administered by Cyberkinetics, Inc. Stamp shapes to your drawing area and connect them easily with keyboard shortcuts or intuitive commands located on the SmartPanel to the left of your drawing area. Strcmp will only return true if every character of both strings is the same and they are the same length. But, since this is MATLAB, structs can also be arrays themselves. How to transform 'double' into 'cell Learn more about cell arrays, double, function, cell array MATLAB and Simulink Student Suite. Contents of Directory toolbox/geo. One more thing. This actions extracts the files and creates another folder called matlab__maci64, where represents the release number. The find function within matlab returns indices where the given locigal argument evaluates true. The sprintf function behaves like its ANSI C language namesake with these exceptions and extensions. In C, the Matlab array is declared to be of type mxArray, which is defined by a structure. Learn more about matrix vectorizing double index. So, when you pass a flat vector or a scalar to a mlab-function, it is autoconverted. MATLAB is a data analysis and visualisation tool designed to make matrix manipulation as simple as possible. 1-28) Discusses the solution in MATLAB of systems of linear. Learn more about matrix vectorizing double index. This is known as short format. Those quotes make it think each line is a single string, instead of some space-separated values in a 2-D array. In an indexed image of class double, the value 1 points to the first row in the colormap, the value 2 points to the second row, and so on. Vectors and scalars are special cases. An array is a collection of data items, all of the same type, accessed using a common name. This matrix is created by horizontally concatenating the codeword vectors that correspond to each index value. Showing 6 results. Learn more about matlab, vector. Most arithmetic operations involving logical arrays return double values. cumsum Cumulative sum of elements. array name indexing in matlab. So make sure you are sending in doubles (the package just assumes that you are sending in doubles). The sprintf function behaves like its ANSI C language namesake with these exceptions and extensions. you're feeding it a sym kind, which throws the conversion errors. so for example Event{1,1} is a 14 bit binary number in it. The class also implements type conversion and addition by implementing a double converter method and a plus method. Values for L are in the. Click the Install button to proceed. Use help in MATLAB for more information on how to use any of these commands. The default is double precision. These indexing tricks come in handy to avoid "for" loops and in vectorizing code. Arrays in MATLAB obey the same rule as their mathematical counterpart: by default, the matrix definitions of operations are used, unless a special operator called the dot operator is applied. Free Download M-QAM modulation and demodulation. Indexed Images. Start using MATLAB by entering MATLAB commands at >>. The inline command lets you create a function of any number of variables by giving a string containing the function followed by a series of strings denoting the order of the input variables. Hu at [email protected] (d(n) is a single cell, aka a 1x1 cell array, not the numeric array you were trying to get. In programs, an array's size is set differently than List or ArrayList. double quote. An array is a collection of data items, all of the same type, accessed using a common name. MATLAB is a data analysis and visualisation tool designed to make matrix manipulation as simple as possible. Logical arrays also are created by the relational operators (==,<,>,~, etc. How to Create a Matrix, Vector, and Cell Array in MATLAB. The LTE Toolbox™ provides facilities to generate sequences of symbols corresponding to the physical channels and signals. Cell Arrays Cell arrays were introduced in MATLAB 5. Code to perform MATLAB binary file operations. Another method for accessing elements of an array is to use only a single index, regardless of the size or dimensions of the array. These are really vectors of characters to Matlab. If the variable already exists, then MATLAB replaces the original content with new content and allocates new storage space, where necessary. These matrices are of type double and have dimensions m-by-n, where m is the number of rows and n is the number of columns. empty to create a 0-by-0 array of the ClassName class. Dans certains cas où l'on travaille avec des tableaux de cellules, il peut se révéler utile de pouvoir appliquer une même fonction sur chaque cellule. 4) on your Windows desktop. Cell conversion to double. jar Click to download and save dfield. end Last index in an indexing expression. It shows error: Index exceeds the number of array elements (3529175). Start using MATLAB by entering MATLAB commands at >>. MATLAB automatically selects those indices at which there is a logical 1 and leave out those where there is a logical 0. Whenever MATLAB encounters a new variable name, it creates the variable and allocates appropriate memory space. The function removeEvens should use the mod internal function and operate on a row array of any length. raw download clone embed report print MatLab 3. MATLAB also has some tool boxes useful for signal processing, image processing, optimization, etc. 1-march-2010 Bug: Note the inputs to the package are in double. This week I want to continue with a brief discussion of linear indexing and its connection to image processing in MATLAB. Foire Aux Questions sur MATLAB. Now, more generally, when the number of dimensions is not known, I simply create a cell array of all ':' string values, replace the specific dimensions I care about with some other indexing expression, and then I can use the index cell array to do the operation. Moreover, the fundamental operators (e. Logical arrays also are created by the relational operators (==,<,>,~, etc. So imagine an equation that has two indexes, and that can be expressed as. d{1} would probably work just as well. So imagine an equation that has two indexes, and that can be expressed as a matrix, how can I do something like this in Matlab? using a for cycle? Just an urgent doubt, im new to matlab. Does Matlab h. INDEXING: MATLAB® uses one based indexing, so the initial element of a sequence has index 1. More recent versions of MATLAB introduced double quotes, but with different functionality to single quotes (albeit with some overlap in functionality). EVAL is right up there with globals. A numerical ODE solver is used as the main tool to solve the ODE's. How do I address individual characters defined in such a string? MATLAB only seems to be able to look at the inside of strings with single quote (i. INTRODUCTION TO FOR AND WHILE LOOPS IN MATLAB For loops and while loops allow the computer to run through a series of commands, repeatedly. so for example Event{1,1} is a 14 bit binary number in it. Cell arrays. For an array, we need to use Length (not Count). to do this I am using the built in math function sin and just getting the amplitude and frequency from Matlab. Refer to fields of a struct array with dot notation, and index into the array as described for numeric and cell arrays. you're feeding it a sym form, which throws the conversion blunders. Indexing with a Single Index. A Structure is a named collection of data representing a single idea or "object". Hi everybody :) I have an image ,a matrix with values between -0. e A(1,1,1) instead of A{1,1,1}. MATLAB code for Amplitude modulation (AM) with modulation index Gallery of Electronic Circuits and projects, providing lot of DIY circuit diagrams, Robotics & Microcontroller Projects, Electronic development tools. This syntax uses the object variable and the case-sensitive property name connected with a dot (. Representation is same as for Java. MATLAB Data Types Complex Double-Precision Matrices. Did this website just save you a trip to the bookstore? Please make a donation to support this site, and you'll get a lifetime of advertisement-free access to this site!. MATLAB Cheat Sheet for Data Science - London Sc hool of Economics. Asked to convert 'USGG3M Index' to a double? What is the wanted result? in a double array in Matlab. find all elements in the array a that has value 1 or 2). jl is a plotting metapackage which brings many different plotting packages under a single API, making it easy to swap between plotting "backends". Free Download M-QAM modulation and demodulation. ASCII Chart in Matlab In this article we have three goals: first, we're going to develop an ASCII chart to understand instructions char and double in Matlab; second, we're going to work with a simple ASCII conversion technique as an example of simple encoding, and third, we're going to develop a rot13 method, which happens to be another encoding technique. ind = sub2ind(sz,row,col) returns the linear indices ind corresponding to the row and column subscripts in row and col for a matrix of size sz. MATLAB ® has several indexing styles that are not only powerful and flexible, but also readable and expressive. The objective is to write down the matrix R whose elements are the cross terms of the elements of the matrix K. Why are the vertical lines in our plot of the minimum inflammation per day not perfectly vertical? Solution. In the other examples we were attemping to keep the pendulum vertical in response to an impulsive disturbance force applied to the cart. Use Python List of Numeric Types in MATLAB. One of the nice things about logical indexing is that it is very easy and natural to combine the results of different conditions to select items based on multiple criteria. ismembertol interprets numeric 0 as false and numeric 1 as true. To assign values to objects in a Java ® object array, use the MATLAB ® command syntax. For example, adding zero to a logical array returns a double array. A MATLAB script is a program which simply executes lines of MATLAB code. However, if the two index do not have the same starting indexing, there would be something wrong. Note this could take several minutes to an hour. The characteristics of double precision arithmetic are described by the relative machine precision. Thus I'm wondering, why the return values (for the indices) are of type double and not uint32 or uint64 like the biggest index into a matrix could be. Please stop and read the following message before continuing to the Noncredit application! If you complete this noncredit application you will not be able to register for a credit course. MATLAB - The for Loop - A for loop is a repetition control structure that allows you to efficiently write a loop that needs to execute a specific number of times. Index 44 1 Introduction 1. Representation is same as for Java. Insert an Integrator block (from the Continuous library) and draw lines to and from its input and output terminals. It is like cooking for friends: one can't eat peanuts, the other can't eat dairy food. so for example Event{1,1} is a 14 bit binary number in it. Floating-Point Numbers. Class with Modified Indexing How to Modify Class Indexing. 1 (Release 14SP1) March 2005 Online only Revised for MATLAB 7. Here is a script showing how to index: egindex. How do I address individual characters defined in such a string? MATLAB only seems to be able to look at the inside of strings with single quote (i. If no data type is specified for numbers, then the default data type is the equivalent to the double precision floating point in the C programming language on the same architecture. Since this type of operation is so common in Matlab, there is a shorthand for selecting all of the entries in a given dimension: just leave off the numbers around the colon, like this b=A(:,3). txt) or view presentation slides online. The format long command displays 16 digits after decimal. The objective of the class design is to:. I have searched matlab no syntax that can do it. Content Indexing with Curly Braces, {} Access the contents of cells--the numbers, text, or other data within the cells--by indexing with curly braces. diff Difference and approximate derivative. GNU Octave is a programming language for scientific computing. It has the capability to do symbolic calculations, but the base software is more inclined towards numerical computations. Indices for the mapping of these sequences to the resource grid are also generated. Text strings. Introduction to Matlab (Code) The basic types in Matlab are scalars (usually double-precision % floating point), Indexing vectors and matrices. Scribd is the world's largest social reading and publishing site. In a uint8 or uint16 indexed image, there is an offset; the value 0 points to the first row in the colormap, the value 1 points to the second row, and so on. The fprintf function allows you to "write" information to the screen for the user to view. In C, the Matlab array is declared to be of type mxArray, which is defined by a structure. The find function within matlab returns indices where the given locigal argument evaluates true. [SVM Matlab code implementation] SMO (Sequential Minimal Optimization) and Quadratic Programming explained June 11, 2015 February 5, 2017 Juan Miguel Valverde SVM This post is the second and last part of a double entry about how SVMs work (theoretical, in practice, and implemented). More recent versions of MATLAB introduced double quotes, but with different functionality to single quotes (albeit with some overlap in functionality). Logical arrays also are created by the relational operators (==,<,>,~, etc. 1-28) Discusses the solution in MATLAB of systems of linear. problem to find the index in 999×6 double. You can select to enter the code book values via the Codebook property or as an input to the object. These indexing tricks come in handy to avoid "for" loops and in vectorizing code. For example, to access the contents of the last cell of C, use curly braces. prod Product of elements. Content Indexing with Curly Braces, {} Access the contents of cells--the numbers, text, or other data within the cells--by indexing with curly braces. Index: MATLAB Commands List. Introduction to Matlab (Code) The basic types in Matlab are scalars (usually double-precision % floating point), Indexing vectors and matrices. This function does not modify the content of the array in any way. d{1} would probably work just as well. I most commonly see user code with scalar structures, by which I mean a structure with fields that contain other MATLAB stuff. Note that MATLAB implements some, but not all, of the extended regular expressions available in other languages such as Perl. This page shows techniques to extract and view portions of a tall array. If you add a space to the beginning of each line, it will be formatted as monospace text. Make a Donation. The characteristics of double precision arithmetic are described by the relative machine precision. The wlanDMGConfig object is a directional-multi-gigabit-format (DMG-format) configuration object for the WLAN DMG packet format. Moreover, the fundamental operators (e. Kita dapat melihat isi dari Workspace ini dengan cara : klik File – pilih Show Workspace. The 'f' in printf stands for formatted. Octahedron Ltd (known as Undocumented Matlab) provides expert Matlab consulting, development and training since 2009 to organizations and individuals worldwide. In this step-by-step tutorial, you'll learn about MATLAB vs Python, why you should switch from MATLAB to Python, the packages you'll need to make a smooth transition, and the bumps you'll most likely encounter along the way. I have a cell array called Event of 179X59 entries and each element is a <1X14> double. Every variable in MATLAB® is an array that can hold many numbers. clf to clear the plot window. MATLAB Tutorial – LOOPING, IF STATEMENTS, & NESTING ES 111 2/6 The function takes a as an input. Lets start with a small matrix. For more information, see Text in String and Character Arrays or watch Using String Arrays for Text Data. Although the X and Y axes are swapped, the third to fifth dimensions of the data are preserved. The x-values are the indices of the y-data, so the first y-value is plotted against index 1, the second y-value against 2 etc. How to Create a Matrix, Vector, and Cell Array in MATLAB. f '' evaluates to Derivative [2] [f]. Get the inside view on MATLAB and Simulink Insights and information from the engineers who design, build and support MathWorks products Subscribe to All Blogs Meet the Bloggers. Contents of Directory toolbox/geo. (See the descriptions),Rome Double monetary Weight 5,40 gr diameter 2 cm Numismatics subalpine b39,Peruvian Mining Smelting and Refining Co Shares 00 Maine USA 1908. MATLAB represents floating-point numbers in either double-precision or single-precision format. like 0 1 0 0 0 0 0 0 0 0 1 0 0 0 which is spread out through columns 1 to 14 so each columns has a bit. MATLAB Data Types Complex Double-Precision Matrices. MATLAB/Octave Python Description; doc help -i % browse with Info: help() Browse help interactively: Indexing and accessing elements (Python: slicing) MATLAB/Octave. numericCells is a 1-by-3 cell array, but numericVector is a 1-by-3 array of type double. In particular we assume that you know how to create vectors and matrices and know how to index into them. The Structure Data Type in Matlab. MATLAB code for Amplitude modulation (AM) with modulation index Gallery of Electronic Circuits and projects, providing lot of DIY circuit diagrams, Robotics & Microcontroller Projects, Electronic development tools. As of MATLAB 2016b, there is a new function. An int16 can be from -32768 to 32767 (16 bits). This article discusses these and other strategies to improving the speed of Matlab code. Sun/Oracle/openJDK provide a full spec for the java. I think about them as cell arrays with one 'extra' dimension of indices being names, the rest being the usual indexing. Learn more about cell array, find, empty cells, condition, cell indexing, concatenation, matching data. myCell = 'Loren' [17] 'summer' 'travel' [5x5 double] [1] You might remember from my previous post that if I index into the cell array using smooth parentheses, I extract the selected portion of the origin array. If sheet does not exist, a new sheet is added at the end of the worksheet collection. Another method for accessing elements of an array is to use only a single index, regardless of the size or dimensions of the array. MATLAB Function Reference : find. With such an indexing system, we. The default is double precision. The x-values are the indices of the y-data, so the first y-value is plotted against index 1, the second y-value against 2 etc. MATLAB is supported on Unix, Macintosh, and Windows environments; a student version of MATLAB is available for personal computers. While MATLAB displays arrays according to their defined sizes and shapes, they are actually stored in memory as a single column of elements. With such an indexing system, we. How to Create a Matrix, Vector, and Cell Array in MATLAB. e double sum of xi xj aij, i=1:n, j=1:n What I mean is this. 26 KB % BI_histeq. Sharpen your programming skills while having fun!. When you want to access selected elements of an array, use indexing. Label the input line "a1" (for acceleration) and the output line "v1" (for velocity) To add such a label, double click in the empty space just above the line. Auto correlation matlab code | Cross correlation matlab code. How to transform 'double' into 'cell Learn more about cell arrays, double, function, cell array MATLAB and Simulink Student Suite. in case you opt for for to devise a symbolic functionality, use the ezplot functionality, no longer plot. Refer to fields of a struct array with dot notation, and index into the array as described for numeric and cell arrays. » whos Name Size Bytes Class x 1x1 8 double array y 1x1 8 double array z 1x1 8 double array Grand total is 3 elements using 24 bytes. For example, the following statement assigns a value to Java array A of type java. It has the capability to do symbolic calculations, but the base software is more inclined towards numerical computations. String functions A complete reference of all of MATLAB's string functions can be obtained by typing 'help strfun' at the MATLAB prompt. Scripting with Matlab. In C, the Matlab array is declared to be of type mxArray, which is defined by a structure. Use MATLAB editor to create file: >> edit average. The Structure Data Type in Matlab. like 0 1 0 0 0 0 0 0 0 0 1 0 0 0 which is spread out through columns 1 to 14 so each columns has a bit. Learn more about load, workspace, variables. Following section shows few examples to illustrate the concept. I have this double summation expression to solve as part of matlab code I am writing. Handle copy behavior means that a copy of an OptimizationVariable points to the original and does not have an independent existence. The ones and zeros have type logical instead of double, which is created by the literals 1 and 0. This matrix is created by horizontally concatenating the codeword vectors that correspond to each index value. Proﬁling, Optimization, and Acceleration of MATLAB code Dr Philip J Naylor Proﬁling Before you try and make any sort of program run faster you ﬁrst need to ﬁnd out which parts of it are running slowly. Logical indexing will allow us to select and manipulate only those subsets of data that satisfy particular logical conditions. I find plotspec (lower case 'S') defined in a couple of user-contributed files that look like homework; the files vary too much to say that "plotspec" has a well-defined purpose. Electric Double-Layer Capacitor(EDLC) Simulink Model using MATLAB Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. MATLAB is an advanced computing environment that is used in a diverse array of applications: mathematics, signal processing, control design, financial modeling, statistical analysis and computational biology. MATLAB has a tuple type (in MATLAB terminology, a cell array) which can be used to hold multiple strings. path Control MATLAB’s directory search path pathtool Open the GUI for viewing and modifying MATLAB’s path profile Start the M-file profiler, a utility for debugging and optimizing code profreport Produce a beep sound Generate a profile report rehash Refresh function and file system caches rmpath ^Remove directories from MATLAB’s search path. Now, more generally, when the number of dimensions is not known, I simply create a cell array of all ':' string values, replace the specific dimensions I care about with some other indexing expression, and then I can use the index cell array to do the operation. So the fist column of the first page might be A(:,1,1). Free Download M-QAM modulation and demodulation. MATLAB Tutorial - LOOPING, IF STATEMENTS, & NESTING ES 111 2/6 The function takes a as an input. m is created. 0 International License. In these tutorials, we use commands/functions from MATLAB, from the Control Systems Toolbox, as well as some functions which we wrote ourselves. Breaking with tradition, I'll use a Hilbert matrix instead of a magic square: A = hilb(5). Foire Aux Questions sur MATLAB. Extract Top Rows of Array. The real power of Matlab is the ease in which you can manipulate your vectors and matrices. Logical operators in MATLAB are those that link logical statements together and return true (1) or false (0) in a logical matrix depending upon the nature of the logical operator and the value of the components. dfield (Direction Field) Java Software Download: dfield. MATLAB ® has several indexing styles that are not only powerful and flexible, but also readable and expressive. I am using MATLAB to load a text file that I want to make a sparse matrix out of. MATLAB® is the high-level language and interactive environment used by millions of engineers and scientists worldwide. Cell arrays. Indices for the mapping of these sequences to the resource grid are also generated. Cody is a MATLAB problem-solving game that challenges you to expand your knowledge. Single Subscript Indexing. Refer to fields of a struct array with dot notation, and index into the array as described for numeric and cell arrays. It is used to create vectors, subscript arrays, and specify for iterations. For example, adding zero to a logical array returns a double array. Mac OS X: Double-click the installer file that you downloaded above. Double (Scalar) Data When referring to indexed elements remember that Matlab begins indexing at 1 while OpenSim data structures begin at 0. This method is known as linear indexing. Logical indexing will allow us to select and manipulate only those subsets of data that satisfy particular logical conditions. For more information, see Text in String and Character Arrays or watch Using String Arrays for Text Data. I want MATLAB to run summation for every single value of 'p', every time with a different value of 'deltaH'. d is a 1x5 cell array, so d{n} is the contents of one of those cells. 2262516 CITATION 1 READS 1,301 4 authors, including: Ahmad Yazdan Javaid University of Toledo 20 PUBLICATIONS 29 CITATIONS SEE PROFILE Mansoor Alam National University of Sciences and Technology 82 PUBLICATIONS 805. How do I print (output) in Matlab? There are three common ways: Type the name of a variable without a trailing semi-colon. Output index type, specified as the comma-separated pair consisting of 'OutputAllIndices' and either false (default), true, 0, or 1. Cody is a MATLAB problem-solving game that challenges you to expand your knowledge. Learn more about matrix vectorizing double index. A 2x4 64 double a 1x3 24 double ans 3x3 72 double b 1x3 24 double n 1x1 8 double To save arrays A and a to a file: save myvar A a Data files in Matlab have the extension. When we index an array with a logical variable, Matlab is using find to locate all the true elements and convert them to indices. Curly braces and dot indexing allow you to extract data from a table. Here is a script showing how to index: egindex. Introduction to C Programming Arrays Overview. Refer to fields of a struct array with dot notation, and index into the array as described for numeric and cell arrays. I have looped a matrix array (5x1) of a numerical form to obtain a string output of 5 ". Showing 6 results. Data Type single You can apply sum to an array of type single and MATLAB returns an answer of type single. ! The data associated with the array. Content Indexing with Curly Braces, {} Access the contents of cells--the numbers, text, or other data within the cells--by indexing with curly braces. You can select to enter the code book values via the Codebook property or as an input to the object. Selecting data based on its values is often useful. weights and opts. If there is a repeated value (or row) in B , then ib contains the index to the first occurrence of the value (or row). MATLAB is one of a few languages in which each variable is a matrix (broadly construed) and "knows" how big it is. Re: matlab source code for lyapunov exponent of eeg signals. See that section for details. Here, I modify the question and don't want zero indexing especially after I knew it may be complex in matlab. Structures are similar to arrays in that. The Java versions were written by Joel Castellanos in collaboration with John C. The way I read your code (likely the way MATLAB reads it as well), your loop iterates through the elements of 'v', and if that element is not equal to 'a', it stores the current value of 'v' in 'y'. The file itself will determine how many inputs the function can accept, what they are called locally, how many outputs can be returned, and what they are called locally.