Community Profile

# Kevin Holly

### MathWorks

Last seen: Today Con actividad desde 2021

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Programming Languages:
MATLAB
Spoken Languages:
English
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Respondida
How to use tree function from App designer to trigger a map/plot on and off
Have you tried cla? You can obtain this information from the axes handle. See below. Notice handle is saved as variable h. Us...

6 días hace | 0

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I have a problem with solve command
The format you are using is no longer supported. Please see documentation for solve. syms x syms y syms z [x,y]=solve(3.*x-...

6 días hace | 0

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the code for a button to dilate and erode the browsed image

7 días hace | 0

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App Designer: Multiwindow Apps Issue
Instead of deleting an app, I just make the uifigure invisible, so that I can keep each app's property variables. You can downl...

10 días hace | 0

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Help with Simplifying repetitive code
If you have your variables as columns in a table, you could do something like this: t=table; t.RIC = rand(14,1); t.RLT = rand...

10 días hace | 0

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How to create two-dimensional boxplots
x = rand(1,30); y = rand(1,30); tiledlayout(1,2) nexttile scatter(x,y,'filled','r'); nexttile boxchart(median(y)*ones(size...

14 días hace | 0

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Matrix processing problem; creating new matrix
matrix = [0 0 0 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0 1 0 1 0 0 0 1 0 0 1 0 0 0]; if matrix(1,1) output1 =...

14 días hace | 0

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How can i transfer data from Matlab to Excel?
If you have data in a UITable and want to save it to a spreadsheet, you could create a callback function for a pushbutton to sav...

15 días hace | 0

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Why the result does change when ı add other rows in Matrix?
It is giving the correct result. It is just rounded. I changed format to long below. l_1=600; A= 48.6; K = [12, 6*(l_1), -1...

17 días hace | 1

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so in appdesigner im building a list box to turn the image to (red ,blue ,green) this is my code for it bout it wont run
Based on the red squiggly line under Methods in your screenshot, you may have an extra "end" in your code.

17 días hace | 0

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how can I plot an increase and decrease in tempearture as x-axes (i.e. from 25 to 700, 700 to 500 all on x-axes), agains different y-axes
Did you want something like this? load A yyaxis left plot(A.T_bred,A.O2); yyaxis right plot(A.T_bred,A.CO2);

17 días hace | 0

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How to generate the hsv cone graph using Matlab?
Here is a starting point. I made some modifications from this code: https://stackoverflow.com/questions/3339692/modeling-hsv-co...

17 días hace | 1

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Hue in HSV Color Space
The max angle is 360 degrees. So, divide your angles by the maxium value to obtain a fraction of 1. [0, 90, 180, 270]/360

17 días hace | 0

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Why I can't add a new property?
You can add a property by clicking "Property" on the toolstrip under the Editor tab within App Designer.

17 días hace | 1

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I need help with this app designer code
Place an end after your switch case.

18 días hace | 0

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The line here need to be fixed: ndataSIR=20*[0 randn(0,width,[1,numpts]); 0 randn(0,width,[1,numpts]); 0 randn(0,width,[1,nump...

19 días hace | 0

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How to perform inverse between a page of a 3D matrix and a column vector without loops?

19 días hace | 0

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CSV or XLSX to write data
CSV would be faster.

19 días hace | 0

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how can I add noise to an image using the Slider
See app attached. Let me know if you have any questions.

19 días hace | 0

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Determine what UI Object Called a Context Menu
Could you create a property variable that stores the handle of the last clicked listbox? something such as: properties ...

21 días hace | 0

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I have an satellite image and I want to extract the information from ROI of image?
Note, I used Computer Vision Toolbox below. Capture_img = imread('Capture.jpg'); Picture1_img = imread('Picture1.png'); imsho...

21 días hace | 0

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How to remove rows with specific number and column in table?
t=table; t.Num = round(4*rand(814,1)); sum(t.Num==0) randhalf = (t.Num==0).*rand(size(t.Num)) randhalf = randhalf>.5 % chang...

21 días hace | 0

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How to let the user input an excel file (i.e .csv file) and array in MATLP APP Designer
Attached are two examples of apps opening Excel files.

24 días hace | 0

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How to count pixels/measure area in binary image?
img = imread("sample.png"); img = im2bw(img); imshow(img) se = strel('sphere',15);; circles=imopen(~img,se); imshow(circles...

24 días hace | 0

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How to extract character and number only from this image to .txt?
You could use the optical character recognition (ocr) function that comes with the image processing and computer vision toolbox ...

24 días hace | 0

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How to avoid overwrite in excel in apps designer
You can change the write mode as such: writecell(tab,fullfile(selectPath,filename),'WriteMode','append');

25 días hace | 0

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How to detect if passed handle is a handle to an App Designer Application
metaclass(app).Description Should return 'Properties that correspond to app components' if it is an app. where the input "app"...

26 días hace | 0

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What does this line mean