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Simon Chan


Hospital Authority

Active since 2021

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Answered
Why legend is not displayed?
You may refer to this answer https://www.mathworks.com/matlabcentral/answers/127195-how-do-i-add-a-legend-to-a-boxplot-in-matla...

ongeveer 11 uur ago | 0

| accepted

Answered
How can I plot a bar char from an excel file?
Try the following: T = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1276650/Sample.csv'); X = cat...

8 dagen ago | 0

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Answered
Having data on yearly basis but want to have it on monthly basis
Read about function retime

15 dagen ago | 0

Answered
Carry out the sum of all Januarys, Februarys through December in a range of years
Read about <https://www.mathworks.com/help/matlab/ref/double.groupcounts.html groupcounts> with groupbins "monthname".

27 dagen ago | 0

Answered
How to extract all the data between two different dates?
You may use function <https://www.mathworks.com/help/matlab/ref/datetime.isbetween.html isbetween>.

ongeveer een maand ago | 1

| accepted

Answered
How to create a gif?
Check the answers from <https://www.mathworks.com/matlabcentral/answers/94495-how-can-i-create-animated-gif-images-in-matlab her...

ongeveer een maand ago | 0

| accepted

Answered
What really is in each pixel of a DICOM slice ?
You may check the following DICOM Tags:(0028,0100), (0028,0101) and (0028,0102) regarding to the information about number of bit...

ongeveer een maand ago | 2

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Answered
How to convert secondly data to daily data?
Read about groupsummary.

3 maanden ago | 0

Answered
Suppress figures instead of displaying each one and closing it.
Set the figure to invisble and use f as the handle in the following example if needed. f = figure('Visible','off')

3 maanden ago | 0

Answered
Use Matlab Function Block to plot into figure created by Matlab Script
Try this in the function path_plotting function path_plotting(x_pos, x_pos_prev, y_pos, y_pos_prev, ax1) x_coodinates = [x...

3 maanden ago | 0

Answered
Dimensions of array being concatenated are not consistent
Variable um1 is a column vector which have the same size as variable t or Ag. However, variable uo is a scalar which is equals t...

3 maanden ago | 0

Answered
3D plot of output variables
Try function plot3 data = load('Output100.mat'); plot3(data.Y1,data.Y2,data.t);

3 maanden ago | 0

Answered
Add labels to multiple points in scatterplot
Read about <https://www.mathworks.com/help/matlab/ref/matlab.graphics.datatip.datatip.html datatip>.

3 maanden ago | 0

Answered
How to scale the data with matric of lon (1300 x 1300) and lat (1300 x 1300) ?
Use idexing as follows and please verify the variable names you are using. lon_idx = (geo.lon > 118) & (geo.lon < 124); ...

3 maanden ago | 1

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Answered
Changing file path in a loop and save figures
Try this to indicate the entire path: savefig(fullfile(thisDir,'DN.fig'))

4 maanden ago | 1

Answered
Exportapp error in saving entire app designer GUI
It support figure object and hence you should use: exportapp(app.UIFigure,[filepath filename]);

4 maanden ago | 0

Answered
how to prevent plotting more curve than the axis limit in app uiaxes
Put those data below your limit to NaN. x=1:50; y=randi([-5,25],1,50); threshold = 0; y(y<threshold)=NaN; % Set thos...

4 maanden ago | 0

Answered
In Matlab App designer eliminate the gray edge of an "Axes" component
Set the figure color to white. f = figure; f.Color=[1 1 1]; % Set color to white

4 maanden ago | 0

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Answered
Add heatmap into uifigure (No App Manager)
You may use uipanel instead of uiaxes for heatmap

4 maanden ago | 0

Answered
detect the largest red object, its centroid and put bounding box around it
use function <https://www.mathworks.com/help/images/ref/bwareafilt.html bwateafilt>

4 maanden ago | 0

Answered
Meshgrid lighning and how to use contour around the plot
For the accurate solution, you need to find those x and y where z=0.2 and 0.8. If an estimated solution is accepted, the positi...

4 maanden ago | 1

Answered
Surf plot on GUI interface
Create an uiaxes inside the uipanel or you can simply use uiaxes instead of uipanel inside the uifigure.

4 maanden ago | 0

Answered
find and store the index value of maximum or minimum value of cell array
[~,idxMax]=cellfun(@max,yourCell); % Index for maximum [~,idxMin]=cellfun(@min,yourCell); % Index for minimum

4 maanden ago | 0

Answered
How to create ROI object handle?
You may try the following: h = figure; imshow(imread('pout.tif')); imrect(); % not use the output of imrect() ax=gca; hAx=f...

4 maanden ago | 0

Answered
Having issues with fprintf statement. It gives me "error using vertcat"
Missing dots in the second line, try the following fprintf(['j \t k =1 \t k=2 \t k=3 \t k=4 \n'... '- ----...

4 maanden ago | 0

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Answered
How to align both vertically and horizontally annotation box with legend box in plots?
"annotation" dose not have properties of legend command as north, east,... I think you may need to calculate the margin separat...

4 maanden ago | 0

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Answered
How to skip zeros values form a matrix and plot with a time values?
You may put those zero to NaN and plot it. It will skip those points. A = [1,2,3,4,0,6,7,0,9,10,11,0,13,14,15]; t=[1,2,3,4,5,6...

4 maanden ago | 1

Answered
Plotting a legend without displaying data on UIAxes
Try this if you would like to show the figure and legend without showing the data. Set the 'LineStyle' to 'none' to hide the li...

4 maanden ago | 0

Answered
how do i use datetime adjust xtick
Try the following without using the function datetick. f = figure; ax=gca; plot(ax,all_time_1206 , all_tide_outliner_1206,'k'...

4 maanden ago | 0

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...

5 maanden ago | 0

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