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Simon Chan


Hospital Authority

Aktiv seit 2021

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Beantwortet
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...

3 Tage vor | 0

| akzeptiert

Beantwortet
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...

11 Tage vor | 0

| akzeptiert

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

18 Tage vor | 0

Beantwortet
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".

29 Tage vor | 0

Beantwortet
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>.

etwa ein Monat vor | 1

| akzeptiert

Beantwortet
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...

etwa ein Monat vor | 0

| akzeptiert

Beantwortet
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...

etwa 2 Monate vor | 2

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

3 Monate vor | 0

Beantwortet
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 Monate vor | 0

Beantwortet
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 Monate vor | 0

Beantwortet
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 Monate vor | 0

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

3 Monate vor | 0

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

3 Monate vor | 0

Beantwortet
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 Monate vor | 1

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

4 Monate vor | 1

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

4 Monate vor | 0

Beantwortet
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 Monate vor | 0

Beantwortet
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 Monate vor | 0

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

4 Monate vor | 0

Beantwortet
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 Monate vor | 0

Beantwortet
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 Monate vor | 1

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

4 Monate vor | 0

Beantwortet
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 Monate vor | 0

Beantwortet
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 Monate vor | 0

Beantwortet
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 Monate vor | 0

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Beantwortet
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 Monate vor | 0

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Beantwortet
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...

5 Monate vor | 1

Beantwortet
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...

5 Monate vor | 0

Beantwortet
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'...

5 Monate vor | 0

Beantwortet
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 Monate vor | 0

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