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Kevin Holly

MathWorks

Last seen: Today Active since 2021

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Programming Languages:
MATLAB
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Answered
finding slope of the graph
I would suggest using the Curve Fitting Toolbox.

5 dagen ago | 0

Answered
How to load the images using the code approach
1. properties folder filename end % Call back for pushbutton to load image [app.filename, app.folder] = uigetf...

9 dagen ago | 1

| accepted

Answered
Hi, I am coding something in the app designer. I have tried it a test script and it worked fine but when coding into the app, there seems to be an error . Please Help !
You were not defining your property variables unless the editfields were changed. I added a startup function that pulls the valu...

9 dagen ago | 0

| accepted

Answered
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...

16 dagen ago | 0

Answered
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-...

16 dagen ago | 0

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Answered
the code for a button to dilate and erode the browsed image
tala, Please see the app attached. Let me know if this example answers your question.

17 dagen ago | 0

Answered
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...

19 dagen ago | 0

Answered
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...

19 dagen ago | 0

Answered
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...

24 dagen ago | 0

| accepted

Answered
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 =...

24 dagen ago | 0

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Answered
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...

24 dagen ago | 0

Answered
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...

26 dagen ago | 1

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Answered
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.

26 dagen ago | 0

Answered
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);

26 dagen ago | 0

Answered
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...

27 dagen ago | 1

Answered
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

27 dagen ago | 0

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Answered
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.

27 dagen ago | 1

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

28 dagen ago | 0

Answered
Please help, I don't understand the error. How I can make it correct?
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...

28 dagen ago | 0

Answered
How to perform inverse between a page of a 3D matrix and a column vector without loops?
load H.mat load A1.mat size(H) size(A1) answer = H.\A1; size(answer)

28 dagen ago | 0

Answered
CSV or XLSX to write data
CSV would be faster.

28 dagen ago | 0

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

28 dagen ago | 0

| accepted

Answered
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 ...

ongeveer een maand ago | 0

Answered
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...

ongeveer een maand ago | 0

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Answered
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...

ongeveer een maand ago | 0

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Answered
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.

ongeveer een maand ago | 0

| accepted

Answered
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...

ongeveer een maand ago | 0

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Answered
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 ...

ongeveer een maand ago | 0

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

ongeveer een maand ago | 0

| accepted

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