Community Profile # Kevin Holly

### MathWorks

Last seen: Today 2021 年からアクティブ

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Programming Languages:
MATLAB
Spoken Languages:
English

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Maximize button in App Designer
I would use Grid Layout.

31分 前 | 0

Instead of trying to figure out how you calculated the areas. I used the following approach to find the masks: fig = figure; ...

11日 前 | 0

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How to stop popping up of plot figures unnecessarily in Matlab app designer?
If it is due to a plot function, you need to define the uiaxes for the plot. such as: plot(app.UIAxes,x,y)

11日 前 | 0

How to superimpose one image on another in UI Axes of Matlab app designer?
Try the following: [~,~,NR_wells] = well_finder(I_final,2); hold(app.UIAxes,'on') for c = 1:NR_wells rectangle...

11日 前 | 0

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how to use elements from array to sort data
numdata = [1500 1500 500 1500 500 2500; 850 850 200 850 200 1000; 2800 2800 1700 2800 1700 5200; 500 500 300 500 300 3000; 1...

21日 前 | 0

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trying to make a donut mask to span over images, suggestions?
RGBImage = imread("peppers.png"); imshow(RGBImage) size(RGBImage) width = 300; height = 300; [x,y] = meshgrid(1:width, 1:he...

25日 前 | 3

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Calculate the duration that variable remains in a specific value
load('tab.mat') logical_array = tab.s==3000; %chose value for speed here bar(tab.t,logical_array) t2 = table; count = 0;...

25日 前 | 0

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Plot a graph with this code.
% Problem2_28.mat % Find the phase shift between 10-Hz sinusoids found in x and y in files % sines1.mat %Check load('sines1....

25日 前 | 0

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why do i get the error using alpha too many output arguments, can anyoen help please.
alpha is a function used in plotting to change transparency. Below I change alpha to Alpha and defined it as a variable equal to...

26日 前 | 0

Creating a file from different-sized files.
Did you want something like this? Note, I attached an import function called importTTfile. load('Line_2.mat') TT = importTTfil...

26日 前 | 0

Getting stuck at Confirm User while installing MATLAB
I would recommend contacting Technical support. https://www.mathworks.com/support/contact_us.html

26日 前 | 0

Unable to perform assignment because the left and right sides have a different number of elements.
VelTren(1,9.81,46) You need to change l to l(i). function [v] = VelTren(v0,a,Lt) l=0:0.1:Lt; v=zeros(1,length(l)); v(1)=v...

26日 前 | 1

How to change the color of the lamp?
Please see the app attached. Note, you can set limits on your edit fields. I set this one from 1 to 4.

26日 前 | 0

Build array from descriptive data without a loop
Array1 = [10,3,3;1000,178,4]; Array2 = cumsum(Array1,2)

Visualisation of multichannel time series data
Would something like this work? time = 1:.1:50; % 500 data point signal = cos(time); for ii = 1:30 for jj = 1:40 ...

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error using the matrices to plot a graph
The length of some of your columns didn't match up. Original table had 10 rows. Some of the new variables added to the table had...

how to put date and time (exple 02-17-2023 06:05:34) on the x axis of a 3D plot
m = ["Jan-03-2023 06:25:12" 34 65; "Jan-04-2023 02:45:33" 56 34; "Jan-05-2023 07:05:38" 45 234] t = array2table(m) t.Propertie...

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how run generated code from apps
You would want to save the code as a .m file. Then you can call the function with this line: createFit(close) Where close is y...

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In following plots, how can we measure intersect points?
for y=0.1:0.1:0.3 G=[]; B=[]; for a=1:1:100 z=0.3; x=y+sind(a); G=[G x]; b=z+...

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Can't understand you I'm getting this error when using a for loop to add two arrays
One of you variables (P_Pa, p_Pa, or q_Pa) only has one row. So, when you iterate with the for loop, you get an error when i = 2...

Changing the number of rows in a vector by adding repeated rows
V = rand(76,3); V1 = zeros(1064,3); V1(1:76,:) = V; for ii=1:13 index = randperm(76); V1(76*ii+1:76*ii+76,:)= V...

How to save the edited value inside the excel .xlsx file?

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How can I extract a specific time for a "datetime" table?
load('RESULT.mat') result result.HourSeries = datetime(result.HourSeries,"Format","HH:mm") index = hour(result.HourSeries)=...

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how to set different axis value?
xylim = 0.0055 ; N = 5; x = linspace(-xylim,xylim,N); y = x; [X,Y] = meshgrid(x,y); r = (X.^2 + Y.^2); rho = s...

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finding slope of the graph
I would suggest using the Curve Fitting Toolbox.

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...

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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...

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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...

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-...

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