# Jon

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**Content Feed**

Combine 3 fig. graphs in one plot to compare each other

You should run each of the simulations keeping the results in local variables stored in the base workspace, and then plot the da...

3 dagar ago | 0

Plotting 2 scripts on 1 graph

The results of running scripts are saved in the local workspace. So lets say that inside of script one you calcualate values of...

4 dagar ago | 0

FMINCON - Include constraints provided by the objective function

You can use nested functions to avoid recomputing your constraint values. This topic is covered in the following documentation...

4 dagar ago | 1

How to get array user input in 1 dialog box

If I am understanding what you would like to do I think this might work. % Use single dialog box to collect all information, u...

6 dagar ago | 0

| accepted

Does anyone know which Simulink Block this is?

Right click on the block in question. This will bring up a context menu. Select "help" from the bottom of this menu. This will t...

27 dagar ago | 0

Toggle between temperature units for unit conversion

I think this does what you want. I have fixed a few errors in your original code, I think you were confused about the value of ...

ungefär en månad ago | 0

How to run a model in simulink several times like a flowchart

You can use the MATLAB sim command to run Simulink programatically in a loop, please see https://www.mathworks.com/help/simulin...

2 månader ago | 0

Create folders and organize data based on file name.

You should be able to select the ones you want using dir and wildcards so for example list = dir('*CP-B-01*.txt')

2 månader ago | 0

Search for text in all .m files of a folder?

Use the "Find Files" function on the home tab of MATLAB main window

3 månader ago | 0

| accepted

Minimizing a function using fmincon with special constraints and intervals

Here is one approach % function to be minimized fun = @(x)x(1)^2 + 3*x(2)/x(3) - x(4)^2 ; %initial value x0=ones(1,4); %...

3 månader ago | 1

| accepted

Get shortest paths and distances among nodes without loop for (and possibly in a faster way)

for the distances (shortest path) between every pair of nodes in the graph d = distances(G) and for some subset, in your case ...

3 månader ago | 1

Matlab - Class : how to declare an internal function returning a value

You must tell MATLAB that findScenarioNumber is a member function of the class you are currently in scenarioNumber = obj.findSc...

3 månader ago | 0

| accepted

any idea how i can compute the elapsed time in each iteration in for loop ?

Use tic and toc

3 månader ago | 0

Reading a specific file based on the input the user enters

You could do something like this % prompt user for test series number seriesNo = inputdlg('Please enter the test series number...

3 månader ago | 0

Midpoint between 2 numbers in 2 columns in the same csv file

% read in the data dat1 = readmatrix("File1.csv"); dat2 = readmatrix("File2.csv"); % assume first column matches, and compu...

3 månader ago | 0

| accepted

How can i plot this: x(t) = |t| * rect((t - 1)/3)

As far as I know, rect is not a MATLAB function. Perhaps it is one you defined and saved in an m file. Assuming this is the case...

3 månader ago | 0

Importing Excel Database Into MATLAB

I just ran T = readtable('dataset2.xlsx') and it seems to import without any problems

4 månader ago | 0

Find the value which is repeated in each row of a matrix (without loop for)

Here's another way % Input A = [ 523 2920 523 1227 8003 8343 5611 8343 ...

4 månader ago | 1

How to discover the neighbor nodes in an matrix?

Here is a little example that I think does what you are asking % % assign threshold for being a neighbor dMax = 0.6; % mak...

4 månader ago | 0

Finding a variable in a large table

Here's a simple example, which I think you could extend to your situation % make an example table name = {'fish','cat','dog','...

4 månader ago | 0

How to build a function to make a working code more flexible?

The first thing you should do to greatly simplify your code and make it more flexible is to avoid using variable names with nume...

4 månader ago | 0

| accepted

Matlab doesn run the program , says at the editor 'input argument might be unused ' for t

If you have your odefun stored in it's own .m file then the syntax for calling ode45 is just [t,x]=ode45(@odefun,tspan,x0); F...

4 månader ago | 0

I am trying to model solutions to a harmonic oscillator in physics using matlab and get "Array indices must be positive integers or logical values"."

The indices you are using in the expression x_array(t/dt+1) etc are not integers. MATLAB indexes arrays using either integer or...

4 månader ago | 0

Two functions having the same name but one being capital?

While MATLAB is case sensitive, Windows (assuming that is your operating system) is not. Since MATLAB requires that function nam...

4 månader ago | 0

| accepted

Help to plot a frequency response of a function

Here is a basic approach (not using any toolbox functions for frequency response), that might give you some ideas of how this ca...

4 månader ago | 1

| accepted

why the coefficient of case 2 is 2 columns, not 5 columns? (about coefficient value of PCA)

By default pca gives the 'economy' option which only includes significant components. for pca(X) with X n by p using 'economy' ...

4 månader ago | 1

| accepted

How can I generate a pseudo random column vector V

Yes this will make a random column vector of length N at each iteration. The values will be uniformly distributed between 0 and...

4 månader ago | 0

Can someone help me open a Simulink file from an old version of matlab? (probably around year 2000)

I am able to open old Simulink .mdl files from around 1999-2000 using my MATLAB Simulink R2022b without taking any specific acti...

4 månader ago | 0

Saving the timestamp for each iteration in an array

You had numerous errors in your code. A key one is that you were writing the sensor data and time to the same column (B1). Since...

4 månader ago | 0

How to get z transfer function from difference equation?

I don't think there is any direct way to convert a difference equation to a transfer function in MATLAB. Maybe it is possible wi...

4 månader ago | 1