Community Profile # Kevin Holly

### MathWorks

Last seen: Today Active since 2021

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Programming Languages:
MATLAB
Spoken Languages:
English
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Find the minimum of the column-maximums of a matrix
Given a matrix A, find the maximum value of each column, then return the smallest of those maximum values (ie return the minimum...

2 jours ago

Solved

MATLAB Basic: rounding II
Do rounding nearest integer. Example: -8.8, answer -9 +8.1 answer 8 +8.50 answer 9

2 jours ago

Solved

MATLAB Basic: rounding
Do rounding near to zero Example: -8.8, answer -8 +8.1 answer 8

2 jours ago

Is it possible to use MatLab to make a interactive visualization?
Serhat, Please see the app and the Live Script attached. Let me know if that is what you were looking for. If you are look...

3 jours ago | 1

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I would like to plot few values of a vector based on threshold setting from another vector.
x=[1 2 3 4 5 6 7 8 9 10]; y=[1 2 3 4 5 6 7 8 9 10]; x(y>3 & y<5) y(y>3 & y<5) figure plot(x(y>3 & y<5),y(y>3 & y<5),'r') f...

3 jours ago | 0

ROI in video using the first frame
Read video and have user define Circle ROI: v = VideoReader('xylophone.mp4'); frame = readFrame(v); imshow(frame) c = drawci...

3 jours ago | 3

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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)...

6 jours ago | 0

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...

6 jours ago | 1

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...

6 jours ago | 0

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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...

7 jours ago | 0

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

7 jours ago | 0

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','...

7 jours ago | 0

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),...

7 jours ago | 0

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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(:); ...

7 jours ago | 1

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...

7 jours ago | 0

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 ...

8 jours ago | 0

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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-...

8 jours ago | 0

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

8 jours ago | 0

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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 = ...

21 jours ago | 1

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...

22 jours ago | 0

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

23 jours ago | 0

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

23 jours ago | 1

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]) ...

29 jours ago | 0

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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...

29 jours ago | 0

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...

environ un mois ago | 1

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...

environ un mois ago | 0

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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...

environ un mois ago | 0

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...

environ un mois ago | 0