Matlab R2008a Full

MATLAB Version MotoHawk Version 2009a 2009b 2010a 2010b 2011a 2011b 2012a 2012b 2013a 2013b 2014a 2014b 2015a 2015b 2016a 2016b 2017a 2017b 7. R2007a. If you are running Matlab R2008a or later, javacomponent uses the javaObjectEDT function to create the returned objects so you do not have to do anything further to. Scheckenclub WestsachsenErzgebirge. Der Scheckenclub stellt sich vor Mitglieder und Rassen. Matlab and the Event Dispatch Thread EDTOnce again I welcome guest blogger Matt Whitaker, with the long awaited EDT article. Java Swings Event Dispatch Thread EDTor why does my GUI foul up Matlab for the most part is a single threaded environment. That is, all commands are executed sequentially along a single execution thread. The main exception to this are the Handle Graphics GUI components whose operations execute on the Java Event Dispatch Thread EDT. EDT effects are reflected even in mundane Matlab GUI operations. If we execute the code below we will probably see nothing until the loop completes and the figure appears with the text label showing 1. Parent,h, Style,text, String,1. String,int. 2strnendfor. Matlab R2008a Full' title='Matlab R2008a Full' />Matlabs uitables can be sortable using simple undocumented features. What is a cell array Edit. A cell is a flexible type of variable that can hold any type of variable. A cell array is simply an array of those cells. I need to call a Python function from MATLAB. I do this Download Matlab 6 0 Full Free Download best software for Windows. MATLAB R2008a Here we have the best Math program. MATLAB R2008a 7. 6 is a language for technical. KjFIxxI9LI/Ub0Ubh2pKbI/AAAAAAAAAV4/_DGmwafUJ7A/s1600/ScreenShot033.png' alt='Matlab R2008a Full' title='Matlab R2008a Full' />By adding a couple of drawnow commands we get the figure and text label to render and then we see the count progress to 1. Parent,h, Style,text, String,1. String,int. 2strn. The drawnow function allows the EDT queue to be flushed and the pending graphics operations to be evaluated. This will also happen with pause and several other commands. If we want to use Swing or AWT components in our user interfaces we need to take this multi threaded environment into account. K0h54LA0gRw/hqdefault.jpg' alt='Matlab R2008a Full' title='Matlab R2008a Full' />The Swing toolkit designers decided to make all the Swing components thread un safe in order to decrease their complexity. As a consequence, all access to Swing components should be done from the event dispatch thread EDT, to ensure the operations are executed sequentially, at the exact order in which they were dispatched. Any action on a Swing component done on another thread Matlabs main processing thread in our case risks a race condition or deadlock with the EDT, which could and often does result in weird, non deterministic and non repetitive behavior all of which should be avoided in any application which should behave in a precisely deterministic manner. In Java, the usual pattern to accomplish EDT dispatching is to create a Runnable object, encapsulate the GUI code in the run method of the Runnable object, then pass the Runnable object to the static Event. Lukas and I were trying to write a succinct comparison of the most popular packages that are typically used for data analysis. I think most people choose one based on. Queue. invoke. Later or Event. Queue. invoke. And. Wait if we need to block operations to get a return value method. Runnable runnable new. Runnablepublicvoid runGUI Code here. Event. Queue. invoke. Laterrunnable There are several functions in Matlab that implement this programming pattern for us java. Object. EDT, java. Method. EDT, awtinvoke, awtcreate and javacomponent. Java. Method. EDT and java. Object. EDT were introduced in version R2. The other three are semi documented meaning they are unsupported but if you edit or type their m file youll see a fairly detailed help section, and although there is some overlap in their functionality they are still available. Object. EDT and java. Method. EDTjava. Object. EDT is the the preferred method since R2. EDT. An object created with java. Object. EDT will have all of its subsequent method calls run on the EDT. This is termed Auto Delegation. Auto delegation greatly simplifies and increases the readability of code. Note that objects created as a result of method calls may not be implemented on the EDT. If you have an existing Java object, you can pass it to java. Object. EDT at any time all its subsequent calls will then onward run on the EDT. Note that this useful functionality is an under documented java. Object. EDT feature it is not mentioned in the main help section but only implied from the example. Create a button on the EDT. Object. EDTjavax. JButton. this will run on EDT since btn was java. Object. EDT created. TextButton. Create a button NOT on the EDT. JButton. Dangerous Matlab thread. TextButton. 2. EDT. Object. EDTbtn. 2. TextButton. 2 The following example shows the use of java. Object. EDT and java. Method. EDT in a more complex situation using a JTable function table. Example. drawnow need to get figure rendered. Yairs create. Table to add a javax. JTablehttp www. Table in java. Object. EDT to put the ensuing method calls on the EDT. Fontjava. lang. StringDialog,java. Font. PLAIN,1. 4. Selected,File,Analysis Routine,Task Status. Object. EDTcreate. Tableh. Fig,headers,false,Font,f. Check. Box. Editor1. Object. EDTtbl. get. Table get the underlying Java Table. IMPORTANT we need to put jtable on the EDT. Model java. Object. EDTjtable. get. Column. Model now we can now do direct calls safely on jtable. Column java. Object. EDTcolumn. Model. Column0. select. Column. Cell. Editor select. Column. get. Cell. Editor. chk java. Method. EDTget. Component,select. Column. Cell. Editor. Item. State. Changed. Callback,chk. ChangeCallback. Table Analysis. Analysis. Analysis. Object. EDTcom. MJCombo. Box,analysis. Table. cb. set. Editablefalse. Item. State. Changed. Callback,cb. ChangeCallback. Object. EDTjavax. Default. Cell. Editor,cb. Column java. Object. EDTcolumn. Model. Column2. analysis. Column. set. Cell. Editoreditor. set some column with restrictions. Column. set. Max. Width1. 00. analysis. Column. set. Preferred. Width3. 00. SELECTED java. Item. Event. SELECTED. Datafalse,file. Analysis. Analysis. Analysis. Analysis. ChangeCallbacksrc,evok. Row jtable. get. Selected. Row. state. Change java. Method. EDTget. State. Change,ev. Change SELECTED. Data java. Method. EDTget. Item,ev. Model. Method. EDTset. Value. At,model,new. Data,j. Quick Macro Serial Code. Row,3. endifendcb. Change. function chk. ChangeCallbacksrc,evok. Box java. Method. EDTget. Item,ev. Method. EDTis. Selected,chk. Box. beep put useful code hereelse. ChangeCallback. endtable. Example. If you are running Matlab R2. Object. EDT function to create the returned objects so you do not have to do anything further to these objects to have their calls dispatched on the EDT. Users need to take care that objects added directly to the components created by javacomponent are on the EDT as well as specialized sub components e. Cell. Renderers and Cell. Editors. The overhead of calling java. Method. EDT is fairly small so if in doubt, use it. Object. EDT and its kin first appeared in R2. R2. 00. 8b. Unfortunately, using them on R2. This problem was fixed in the R2. Object. EDT became a fully supported function. The problem with using java. Object. EDT in our application is that if it ever runs on an R2. Matlab release R2. Object. EDT function does not existFor this reason, I am using the following method in my projects function result java. Obj. EDTvararginPlaceholder of Matlabs buggy java. Object. EDT function on R2. Programmed by Yair M. Altman altmanyatgmail. Revision 1. 2 Date 2. Object. EDT,varargin. Note that java. Method. EDT has the method name as its first input argument, and the object name or reference as its second arg. This is inconsistent with many other MatlabJava functions, which normally accept the target object as the first argument compare invoke, awtinvoke, notify etc. It also means that we cannot use the familiar obj. Method. EDTmethod. Name format. One final note when java. Object. EDT and java. Method. EDT first appeared in R2. Object. MT and java. Method. MT functions, which create and delegate Java objects on the main Matlab computational thread. Their internal documentation says that there are cases when execution must occur on the MT rather than EDT, although I am personally not aware of any such case. For users with versions prior to R2. FAQ MATLAB Wiki FANDOM powered by Wikia. Basics. Back to top. What is a cell arrayEdit. A cell is a flexible type of variable that can hold any type of variable. A cell array is simply an array of those cells. Its somewhat confusing so lets make an analogy. A cell is like a bucket. You can throw anything you want into the bucket a string, an integer, a double, an array, a structure, even another cell array. Now lets say you have an array of buckets an array of cells or a Cell Array. Each bucket can contain something different, or they might all contain the same type of variable. Bucket 1 could contain a string, while bucket 2 could contain an image array of uint. Or all buckets could contain strings of various lengths. Its totally flexible. String. ca2 my. Integer. Double. Array. ca4 rgb. Image. ca5 my. Structure. The braces should be read as contents of, so if you say ca4 rgb. Image, you are saying that the content of cell 4 is the variable rgb. Image. Another way to use the cell is to refer to the cell itself, rather than the contents of it, and for that you use parentheses. The item it refers to must be a cell. For example ca1 is a cell, ca2 is a cell, and ca3 is a cell, even though those cells contain variables of arbitrary, and possibly different, types. To make something a cell, you enclose it in braces, like this. String. ca2 my. Integer. Double. Array. ca4 rgb. Image. ca5 my. Structure. This set of code is entirely equivalent to the first set of code. For the first line, its basically like saying Lets get a bucket a cell and put the string into it thats what my. String by itself is. Then lets take that bucket and make it bucket 1, replacing any bucket that was already there. In other words, take the cell my. String and make it be element 1 bucket 1 of the cell array called ca. It uses parentheses which means it refers to the whole single bucket the bucket plus the contents while the first set of code used braces which refers to only the contents of the bucket. So ca1 equals the cell my. String, while ca1 equals the string my. String because the braces said to get the contents of the cell. In other words, ca1 says dont give me the bucket with the string inside, just give me the string alone, without the bucket. Its just a slight difference a slightly different way of considering it. Saying. String  or saying. String. are equivalent for the most part. You can use either way and I dont really think one way or the other is really preferred. You can use whatever way is easier for you to think about it. Maybe one way will be more intuitive for you than the other way, but again, they are equivalent. Cell arrays are similar to structures, which you probably are more familiar with, in that both are containers that can hold variables of a variety of different types arrays, strings, scalars, even other structures or cells. The difference is that with structures you refer to the different members or fields by their name e. User. Settings. my. String, while with cells you refer to them by their index number e. Here is some demo code that may help explain cell arrays, and the type of classes you get when you use braces or parentheses. Initialize a cell array with three different types of contents. First cell contains an int. Lets see whats in cell 1 and the difference between. The class of ca. 1cell is sn, classca. The class of ca. 1contents is snn, classca. Lets see whats in cell 2 and the difference between. The class of ca. 2cell is sn, classca. The class of ca. 2contents is snn, classca. Lets see whats in cell 3 and the difference between. The class of ca. 3cell is sn, classca. The class of ca. 3contents is snn, classca. Now lets see what gets displayed when we use the. Here is what celldisp returns n. One use of cell arrays is to hold lists of strings of different lengths. Since arrays are rectangular, you cant have an character array of strings unless each string was the same length or padded with blanks to be as long as the longest string. To get around that, you can use a cell array instead of a character array. Each cell in the cell array would hold a string of a different length they dont have to all be the same length like with a character array. For example. Short A little longer A really really long string. If you get strange error messages while working with cells or cell arrays, one easy thing to try is to change your braces into parentheses, or your parentheses into braces, and see if that eliminates the errors. Its also possible to mix indexing of the row and column of the cell array with the indexing of the contents of the single cell at that row and column of the cell array. For example, lets create a cell array of 2 rows and 3 columns, and in every cell of that lets put a 4 element integer array. Then well access the second element of the integer array at the cell in row 1, column 2 of the cell array. Create an empty cell array of 2 rows and 3 columns. Each element in the array is a single cell. Now, for each cell in the cell array. Number. Array randi9. Number. Array. An alternate way of specifying is given on the next line. Number. Array  Note changes in braces and parentheses. The integer array in row d, column d of the cell array d, d, d, dn. Number. Array1, random. Number. Array2, random. Number. Array3, random. Number. Array4. Print out the second element of the 4 element integer array. D array of cells. Value c1,22. The second element of the integer array in cell row d, column d is dn. Value. To visualize, imagine you had an array of buckets arranged in 2 rows and 3 columns this is our cell array, and in each bucket are 4 billiard balls arranged in a line. The above example goes to the bucket in the first row and second column, and reads off the number of the second billiard ball in that bucket. For further discussion see Loren Shures blog 1For more information, this link gives good examples about accessing cell data http www. Does MATLAB only calculate to 4 significant digits Edit. It doesnt. Dont worry your number is not truncated. It uses full double precision floating point numbers to calculate everything. However, by default it only prints a few decimal places to the screen in the command window. You can change this, to print out more decimal places, using the command. Why does the transpose operator take the complex conjugate Edit. When performing linear algebra operations on complex matrices, it is almost always the complex conjugate transpose also called the Hermitian transpose that is needed see Gilbert Strangs linear algebra book for discussion page 2. The bare apostrophe is an operator that takes the complex conjugate transpose. The non conjugating transpose operator is a period followed by an apostrophe. Type help punct for more info. A   complex conjugate transpose. A.   transpose. How can I detect Na. N values in a matrix or vector Edit. By definition, Na. N is not equal to any number, not even Na. N itself. Therefore there are two ways to detect Na. N values. Generate sample data. Na. N. Find Na. N values in two different ways. For speed purposes the use of isnan tends to be 2. Heres a test snippet if you want to see the comparison. A rand1. 00. 0 Random 1. ArandsizeA. Populate with Na.