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Simon Chan


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Active since 2021

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Answered
i want to see each plot figure for every j i have, so how can i do it?
Your for loop states j = length(dt1), which is 3 in your case. So the for loop only do figure 3 for you. Use the following inst...

6 Tage ago | 0

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Answered
How to shade the same area in each subplot in a 5x1 Figure?
If you would like to shade the entire region and already knowing the y-limits, you can put the value of those limits directly wh...

7 Tage ago | 0

Answered
detecting circle using hough tranform
The range of radius is too small and the sensitivity may not be good enough. I choose radius from 100 to 150 pixels and sensiti...

7 Tage ago | 1

Answered
Error using convert2quaterly: The value of 'TT1' is invalid.
Your data has only one column besides the date. So you can only state one method to your data. The following shows an example w...

7 Tage ago | 0

Answered
JPG to GIF animation
The colormap for the first two figures are overwritten by the third one in the following: [A,map] = rgb2ind(imread('obr_0.jpg')...

12 Tage ago | 0

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Answered
delete consecutive commas in txt file
May be this: rawdata = readlines('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1122645/ca.txt'); iwant = [];...

12 Tage ago | 1

Answered
Save a Figure as a .png and .pdf of a Specific Size
Try this to see whether the following is what you want. clear; clc; f = figure; plot(1:10,1:10); % Set figure position after...

14 Tage ago | 0

Answered
Import data csv with date/time and other info with setvaropts
Try this: opts = detectImportOptions('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1121365/essai_data_3.csv',...

14 Tage ago | 1

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Answered
Start and end date picker to load data to graph
If your weather data are arranged in timetable format, another option you may use is function timerange. Suppose the variable n...

22 Tage ago | 0

Answered
Plotting graph with three variables
Try to use function <https://www.mathworks.com/help/matlab/ref/plot3.html plot3> or <https://www.mathworks.com/help/matlab/ref/s...

23 Tage ago | 0

Answered
Min and Max values and corresponding x/y values
use two output arguments from function <https://www.mathworks.com/help/matlab/ref/max.html#mw_f4dadb60-ee1a-4996-a37b-2fdd20904f...

23 Tage ago | 0

Answered
Average column data with specific values
Use function writetable to convert your data on a table array. Then use function groupsummary as follows G = groupsummary(T,"...

etwa ein Monat ago | 1

Answered
Integer operands are required for colon operator when used as index.
When you plot the solution, you use the following index: 1:(nt/10):nt However, variable "nt" is equals to 1001 and the result ...

etwa ein Monat ago | 0

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Answered
How to delete symmetry cells in Matlab?
Try this: F = cell(1,3); F{1} = cell(1,10); F{2} = cell(1,16); F{3} = cell(1,16); F F{2}(9:16)=[]

etwa ein Monat ago | 1

Answered
Vector as ItemsData property in List Box
Suppose the listbox is defined as follows and ItemsData are given in your example. app.ListBox = uilistbox(app.UIFigure); You ...

etwa ein Monat ago | 0

Answered
How to draw rectangle with coordinate, height and width provided?
Another option is to determine the coordinates of the lower left corner of the rectangle before you draw it. It can be determine...

etwa ein Monat ago | 0

Answered
Function in App-Designer struggles to read dropdown values
Use function str2double as follows: % Value changed function: minFrequenzDropDown function minFrequencyDropDownValueC...

etwa ein Monat ago | 0

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Answered
Remove row if its value is not different enough from the value in the row above it.
Let A be your matrix, try the following: threshold = 100; A([false;(diff(A(:,1))<=threshold)],:)=[];

etwa ein Monat ago | 0

Answered
How to plot mutiple vertical lines over x axis ?
User function xline is easier.

2 Monate ago | 0

Answered
how to remove arrows in streamslice plot?
Here: clc, clear, close; X = linspace(0,1.5); Z = linspace(-3,3); [z,x] = meshgrid(Z,X); ui = -0.04545*x.^2.*z; vi = x.*(-...

3 Monate ago | 0

Answered
Gensurf / Axis Limitations
Try this: set(gca,'ZLim',[0 5]) or zlim([0 5]); % with bracket

3 Monate ago | 0

Answered
Am I writing an image volume correctly from the Dicom files in a directory?
Looks good except the last two lines. You know the slice location may not be in a correct order and you sort it in the last lin...

3 Monate ago | 0

Answered
Change data tip to your notation
If you would like to replace the name X,Y,Z to "Age", "Male", "Pron. dialog" respectively and display the same values, try the f...

3 Monate ago | 0

Answered
3D - XRD plot
Let's see function plot3 can satisfy your requirement or not. figure; ax = gca; hold(ax,'on'); plot3(ax,SampleA(:,1),repelem...

3 Monate ago | 0

Answered
How to reorder the List box items in created dialogue window?
Attached code for a listbox with move up button callback. If this is what you need, you may also implement the move down button...

3 Monate ago | 0

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Answered
Displaying message in GUI
Use function <https://www.mathworks.com/help/matlab/ref/uiprogressdlg.html uiprogressdlg> or <https://www.mathworks.com/help/mat...

3 Monate ago | 0

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Answered
Fit a spline function to a set of data points
Use function <https://www.mathworks.com/help/matlab/ref/spline.html spline>

3 Monate ago | 0

Answered
How to table the data
Use function array2table A=[1 2 3 4 5 6 8 9 7 1 4 5 1 0 1]; T=...

3 Monate ago | 0

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Answered
How to color an image
Try the following: I = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1052130/image.png'); BW = imbina...

3 Monate ago | 0

Answered
Error adding DataTipRows to patch/fill
Try the following: figure; %Produce figure LATLONG.F1 = [0 1 1 0; 1 0 0 1]; %2x4 array ...

3 Monate ago | 0

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