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Kevin Holly

MathWorks

Last seen: Today Active since 2021

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Answered
if column 1 is nan, make corresponding number in column2 nan
Period = [1:1:100]'; F = [201:1:300]'; A=[Period F]; % a random matrix Data = A; percent_miss = 0.1; nTime = length(Period)...

1 giorno ago | 0

Answered
Looking to identify a football from an image
RGB = imread('YourImage.png'); % Convert RGB image to lab space I = rgb2lab(RGB); % Apply thresholds BW = (I(:,:,1) >= 1...

1 giorno ago | 1

Answered
Height of circular shape
You could use regionprops to find the major axis length. Or did you need the length of the object in the y-direction? What do yo...

1 giorno ago | 0

| accepted

Answered
How can I calculate a formula h(t)=4.0+6.0te^-0.5t-4.0e^-0.25cos(0.75pi.t)?
You need to make sure all terms that are multiplied use *. Also replace e with 10^ assuming the e is exponent notation. t = 1:1...

1 giorno ago | 0

| accepted

Answered
History of opened m-files
try open(fullfile(prefdir, 'matlab.prf'))

1 giorno ago | 0

Answered
Customized Markers Edge and Face Colours of a scatter plot SEPARATELY
load hospital hospital x = hospital.Age; y = hospital.Weight; g = {hospital.Sex,hospital.Smoker}; h=gscatter(x,y,g,'gbmc','...

1 giorno ago | 0

Answered
how to remove the tiny white pixels around the rectangles
Img = imread('originalImage.png'); imshow(Img) You can also filter based on area of objects Img = bwareafilt(imbinarize(Img),...

2 giorni ago | 0

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Answered
3 double images stored in a matrix
m1 = rand(256); m2 = rand(256); m3 = rand(256); size(m1) size(m1(:)) M(:,1) = m1(:); M(:,2) = m2(:); M(:,3) = m3(:); ...

2 giorni ago | 1

Answered
How to implement tic, toc and pause in audioPlugins?
If you are trying to create a UI, you could create an app with App Designer as shown attached. Let me know if this addresses you...

2 giorni ago | 0

Answered
Append data to 3rd dimension in loop
Assuming you have 68 files that are distinguished based on the year and the above is only looking at 33 of the files/years. 3D ...

3 giorni ago | 0

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Answered
I need help to execute a triple integral
Your value for xmax needs to be a floating-point array. syms s r m; fun = @(s,m,r)(r.*exp(-(s.^2/2+1.727*(m-5))))./(sqrt(r.^2-...

3 giorni ago | 0

Answered
Read/write georeferenced image
Can you try this below? [A,R] = readgeoraster('input_image.tif'); O = A*2; %any operation you like info = geotiffinfo('input_...

3 giorni ago | 0

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Answered
How do you remove non-integer values from a colorbar?
Let's say this is an image with a colorbar with non-integer values: Img = randi(255,25); imagesc(Img) h=colorbar; h.Ticks = ...

16 giorni ago | 1

Answered
How to work with the current point feature in app designer?
Please see the app attached with the script for the callback function. Let me know if this addresses your problem. Note, I also...

17 giorni ago | 0

Answered
How to show data in a textField on app designer?
It should be app.TextArea.Value = "testing";

18 giorni ago | 0

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Answered
3D shape for rabbit
That is the Stanford Bunny. Available for download here: http://graphics.stanford.edu/data/3Dscanrep/

18 giorni ago | 1

Answered
Trying to Customize a heatmap color bar and thresholds
m=30*rand(30)-15; surf(m,'FaceColor','interp') cmap = [1 0 0; 1 1 1;1 1 1; 1 1 1; 1 1 1; 0 0 1]; colorbar caxis([-15 15]) ...

24 giorni ago | 0

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Answered
How to change folders in MATLAB App Designer ?
pwd gives the present working directory. The code saves it as aux_dir. aux_dir = pwd The line below appends aux_dir with the s...

24 giorni ago | 0

Answered
Axes box incompletely copied to clipboard
Have you tried getframe? h = getframe(hax) Image = h.CData; You can save the Image to PowerPoint as shown below (Note, you wi...

29 giorni ago | 1

Answered
How to match colorbar with colormap ranges in surf?
io_V1_mat=linspace(1000,100000,10); RL_mat=linspace(1000,1000000,10); VL=[2000*rand(10,4) 5000*rand(10,6)]; surf(io_V1_ma...

29 giorni ago | 0

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Answered
Export images and PDF in App Designer
If you have the image displayed on an axes, you can do the following: h=getframe(app.UIAxes) h.cdata If you want to make a re...

29 giorni ago | 0

Answered
Passing arguments between 2 standalone apps
Please see the links below: Create Multiwindow Apps in App Designer Share Data in Multiwindow Apps For an example, see one of...

30 giorni ago | 0

Answered
How to get the current Axes.View after using rotate3d interaction in MATLAB appdesigner?
Please see the attached app and scripts. I created a .m file for each callback function. Let me know if you have any questions. ...

30 giorni ago | 0

Answered
how can I plot the following graph
z = linspace(1,3500,100); n = 3000*rand(100,5); date = {'05-Mar';'12-Mar';'19-Mar';'26-Mar';'02-Apr'}; f=figure; axes("YDi...

circa un mese ago | 0

Answered
Add data tips to figure using code
figure img = rand(800,1000); h = imagesc(img); d = datatip(h); d.DataIndex=353*800+355; d.Location = "northwest"; d2 = d...

circa un mese ago | 0

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Answered
How to scatter plot when the values are i.e 1,1 and 1,10 grid
What do you want on your y and x axes? sparams.frequency_GHz = 10*rand(41,16); delta = rand(41,16); This one separates the ...

circa un mese ago | 0

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Answered
How to export data and plot from app designer to excel?
Please see the app attached. You can use writetable to save your data to an Excel file. You can use xlswritefig found on the Fil...

circa un mese ago | 0

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Answered
Preview in MATLAB GUI
Please see Previewing Data in Custom GUIs. You can use the command: preview(vid, hImage); where hImage is the handle to the i...

circa un mese ago | 0

Answered
Previous legend replaces the new one in a plot, why?
Were you changing the location of the legend as shown below? I made a quick app (attached) using the approach below. plot(rand(...

circa un mese ago | 0

Answered
Matching the two columns of two different tables and to combine the common values in second table.
You can use innerjoin or join. See Join Tables.

circa un mese ago | 0

| accepted

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