![matlab if statement matlab if statement](https://i2.wp.com/ahmaddahlan.net/wp-content/uploads/2021/03/Struktur-If-Elseif-else-end-dalam-Algoritma-Matlab.png)
Such as less than, greater than or equal to and if this logical expression evaluates is true then the program will execute one or more statements and then end. This logical expression is going to consist of one or more of these relational operators. So, we start the program with some sort of input and we evaluate this input using a logical expression. In a flowchart of the if statement as given below, flowcharts are super useful for documenting the paths that a program can take. Let’s get started.īefore we jump into MATLAB Programming, let’s take a look at the structure of the if statement.
MATLAB IF STATEMENT HOW TO
Required to end the if-block with the endif statement.Conditional Statements in Matlab- In this tutorial, we will introduce you to the conditional statements if, if-else, and else if and then I will show you through examples, how to implement each of these statements in MATLAB. You are not required to have an elseif or else block, but you are The basic form of the if-block is demonstrated in the program above. Also, tryĬhanging the other variables and experiment.
![matlab if statement matlab if statement](https://i.stack.imgur.com/0MPZI.png)
Try changing the value of the variableĭecision to see what actions the script will take. You can execute the instructions in the file by simply typing ifDemoĪt the matlab prompt. The most basic structure for anĭecision = 3 leftx = 0 rightx = 1 lefty = 1 righty = 1 N = 10 h = ( rightx - leftx ) / ( N - 1 ) x = ' A = zeros ( N ) for i = 2 : N - 1, A ( i, i - 1 : i + 1 ) = end A = A / h^ 2 A ( 1, 1 ) = 1 A ( N, N ) = 1 b = sin ( x ) b ( 1 ) = lefty b ( N ) = righty if ( decision 3 ) % Find and plot the eigen values of inv(A) = eig ( inv ( A )) e = diag ( e ) plot ( real ( e ), imag ( e ), 'rx' ) title ( 'Eigen Values of the inverse of the matrix' ) else % Solve the system y = A \ b linear = ( lefty - righty + sin ( leftx ) - sin ( rightx )) / ( leftx - rightx ) constant = lefty + sin ( leftx ) - linear * leftx true = - sin ( x ) + linear * x + constant subplot ( 1, 2, 1 ) plot ( x, y, 'go', x, true, 'y' ) title ( 'True Solution and Approximation' ) xlabel ( 'x' ) ylabel ( 'y' ) subplot ( 1, 2, 2 ) plot ( x, abs ( y - true ), 'cx' ) title ( 'Error' ) xlabel ( 'x' ) ylabel ( '|Error|' ) end There are times when you want certain parts of your program to beĮxecuted only in limited circumstances. Greater than 3 the eigen values of the inverse of the matrix are foundĪnd plotted, otherwise, the system is inverted to find anĪpproximation to y’=sin(x) according to the specified boundary If this variable is less than 3, theįile will find and plot the eigen values of the matrix, if it is The file is called by Matlab, and it constructs a second derivativeįinite difference matrix with boundary conditions.
![matlab if statement matlab if statement](https://i.ytimg.com/vi/IKl_dDwJiis/maxresdefault.jpg)
Here we will define an executable file that contains an if statement. Rate of change is discontinuous, you may want to change the rate ForĮxample, if you are approximating a differential equation, and the
MATLAB IF STATEMENT CODE
There are times when you want your code to make a decision. ( Plotting), executable files ( Executable Files), or ( Vector Functions), loops ( Loops), plotting ( Introduction to Vectors in Matlab), matrices ( Introduction to Matrices in Matlab), vector operations
![matlab if statement matlab if statement](https://image.slideserve.com/1377161/slide17-l.jpg)
More information on those topics see one of our tutorials on vectors In this tutorial we will assume that you know how to create vectorsĪnd matrices, know how to index into them, and know about loops.