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**Feeds**

How to use Matlab to find a pressure in a temperature and density spreadsheet using the nearest density value.

This should be an interpolation in 2 dimensions and should work in a straight forward way unless I missed a key detail in your d...

25 days ago | 0

Question

parfeval performance inside appdesigner apps

I have an image processing routine that takes 4-5s when run on a single thread. If parallelized using parfeval() inside an m scr...

25 days ago | 0 answers | 0

### 0

answersQuestion

Incorrect result from camera calibrator app

I used the camera calibrator app to calibrate lens distortion and I specified correct checkerboard size of 8mm. The calibration ...

7 months ago | 1 answer | 0

### 1

answerQuestion

Confusing sprintf() behavior

>> sprintf('%.3f ',[.1 .2 .3]) ans = '0.100 0.200 0.300 ' >> sprintf('%s, %.3f ',datestr(now),[.1 .2 .3]) ans = '...

7 months ago | 1 answer | 0

### 1

answer[Simulink] choosing wich blocks to run based on variable

You may be able to do it with an if-else block. It's not clear how long the data acquisition will be but some kind of logic or m...

8 months ago | 0

why do i get "Array indices must be positive integers or logical values " and how do i solve it ?

your X_period should equal to X(1:24) If you want to view it shifted you can have idx = -11:12; and either use plot(idx...

11 months ago | 0

movegui in app designer

I opened your mlapp in R2021b (macos intel) and found objects misplaced. I dragged them into positions, saved, closed and reopen...

11 months ago | 0

| accepted

Plotting in 3D using dashed and solid lines for a given range of R2

You may call quiver3() twice in separate statements one with solid line spec and the other with dashed line spec. E.g. as your...

1 year ago | 0

How to set a variable in the simulink workspace from the model itself?

You can use model callback functions. E.g. Preload, postload, init. See more info here https://mathworks.com/help/simulink/ug/mo...

1 year ago | 0

Question

Vectorizing a loop for cumulative sum with reset

The lines below work fine to compute cumulative sum on a 1D logical array ('s') such that the summation resets to zero whereever...

1 year ago | 1 answer | 0

### 1

answerintersections between rays and 2D square grid

Each line has an equation, and in this case several lines have simple equations like y=c (horizontal lines) or x=c (vertical lin...

2 years ago | 0

Submitted

Peirce's Criterion for Outlier Removal

Apply Peirce's criterion for outlier detection for arbitrary number of observations 3 or more using Gould's implementation.

2 years ago | 1 download |

How to put name of images files on workspace ?

Initialise count = {}; instead of count = []; then replace the count update before imwrite() as count(end+1,:) = {file_nrm...

2 years ago | 0

| accepted

3 point radius of curvature of a circle

Just fit a circle through the xy coordinate data and you would get centre and radius. See https://lucidar.me/en/mathematics/lea...

2 years ago | 0

How do I design my code so that when the user presses a button, a sound plays?

In the app you will see callback functions for each button. Eg you right click a button and select add buttonpressed callback an...

2 years ago | 0

How to create a DLL file from .cpp and .h in Matlab?

You dont need matlab to compile C/cpp files. Just need a c/cpp compiler.

2 years ago | 0

| accepted

Question

Effect of os clock change on timers

I see that on Windows 7 and Matlab 2017a, timer execution can be thrown astray if OS clock jumps back. E.g., if timer callback w...

2 years ago | 1 answer | 1

### 1

answerHow to replace specific area of image with zeros in video loop

Instead of recreating the annotation in the loop, create just one annotation before the loop, assign a handle to it and inside t...

2 years ago | 0

| accepted

uidropdown does not extend beyond its parent figure

You are right, this doesn't seem to be a bug. Since the child objects cant extend beyond parent containers. However, in R2022b o...

2 years ago | 0

Scroll bar does not appear in tab group.

According to the documentation: Setting this property to 'on' enables scrolling within the container. However, there are additi...

2 years ago | 0

| accepted

how to read .txt file having the following format.

readtable(), importdata(), etc. You may just drag and drop the file into workspace to launch importwizard. Make the appropriate...

2 years ago | 0

The label component of an edit field is not showing in component browser of app designer

I don't think Label for an edit field exists as a separate object (at least not in very recent versions). It's a part of the edi...

2 years ago | 0

MATLAB is taking endless snapshots instead of a video, when trying to track colored object in webcam video.

Move call to figure() out of while loop. It opens a new window on each call in every iteration of the loop which is why your plo...

2 years ago | 0

| accepted

How can I make each iteration of a for each block create a unique random number?

You will have to generate a vector of random numbers outside and pass it as an input. Default partitioning of this vector might ...

2 years ago | 0

| accepted

How to plot a graph with logarithmic scale

I did a quick search and couldn't find a call to plot functions in your script. Where are you plotting? Did you try to use semil...

2 years ago | 1

Question

2022b Beta is suddenly unlaunchable on macOS M1

Today my matlab window became unresponsive. Not sure exactly when, but I had data import window and a plot open while connected ...

2 years ago | 0 answers | 0

### 0

answersPlot timeseries for mean monthly temperature

Try this. xdata = datenum(dataClean(1:3)'); ydata = dataClean(4,:)'; plot(xdata,ydata); datetick x Cheers

2 years ago | 0

Error using stem X must be same length as Y.

The lengths of x and n are different, 19 and 25. Plotting requires them to be equal. I think you want to do x2 = zeros(size(n...

2 years ago | 0

| accepted

How can I write ANOVA results to a csv file?

Don't understand whats causing the problem, but the below line works writetable(ranovatbl(1:end,:),'test_table.txt') Really st...

2 years ago | 1

| accepted

How to convert excel date and time data into numerical integer matrix [year, month, day, hour, minute, second]

An easier way of doing that would be convert the dates into datenum so that you dont have to individually compare years,months,....

2 years ago | 0