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Select particular 3D volumes of a 4D matrix
matrix_4D = matrix_4D(:,:,:,[1:11 14:29]);

environ 5 ans il y a | 1

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How do I find means of samples and then mean of the means?
Although it sounds like a homework question, I'll answer it since it is basic. random = randi(1000000,1000,25); mean_row = mea...

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How can I create a data table and export it as an excel file?
Hey bobby! Glad to see you again! Here you are: datadirectory = '/Users/name/Desktop/data/'; import = dir(fullfile(datadir...

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How to add a line to a freqz plot?
yline(0)

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Adding labels to fsurf contour lines
You can add text by entering the following: text(0,30,160,'Text Label','Fontsize',12) where 0, 30, and 160 are the x, y, and...

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How to assign xlabel,ylabel from my selected popup menu list?
If App Designer: value = app.DropDown.Value; value2 = app.DropDown2.Value; value2 = app.DropDown2.Value; if value == 'Opti...

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How to find the intersection of a fitting line with a logarithmic y-axis?
A= [10 40 60 80]; B = [5 6 7 8]; scatter(B,A,20,'filled') set(gca,'YScale','log') % Polyfit p = polyfit(B,A,2);% 2nd or...

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how to find peaks for 100%,75%,50%,25% of the max peak
I'm not entirely sure what peaks you are trying to identify. Below are techniques you can use. You can add labels to your pea...

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How do I obtain a 2D or 3D representation of a georeferenced raster?
You can use the surf function. Below are links to some examples: https://www.mathworks.com/matlabcentral/answers/598591-how-to-...

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How to plot entire row of numerical matrix from corresponding logical array?
Drill = [ 0.2324 0.0010 -0.2805 0.2324 0.0005 -0.2805 0.2322 0 -0.2800 0.2324 0 -0....

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How to get the smallest value in submatrices
cellfun(@min,B,'UniformOutput',false) %or cellfun(@min,cellfun(@min,B,'UniformOutput',false),'UniformOutput',f...

environ 5 ans il y a | 0

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How to plot coordinate data to appear solid with lighting effect?
There may be a better way doing it. Here is my attempt: x1 = 0; x2 = 0; y1 = -.8; % value based on angle of 25 degrees y2 = ...

environ 5 ans il y a | 0

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How do I display the workspace variable file name via MATLAB script?
"And yes, each .mat file in the loop would save the matrix under the variable name "IntensityImagedataCh1". Would that impact ...

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Find corresponding values in different arrays
To be clear, you want to replace the sixth row of read{1,2} with the first row of T? If so, here it is for the specific examp...

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Mean and median at each interval
Data = importfile('Data.xls') % Histogram figure histogram(Data.Temp,[floor(min(Data.Temp)):1:ceil(max(Data.Temp))]); xlab...

environ 5 ans il y a | 0

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Bubbleplot in multiple dimensions
Have you looked into using bubblechart3? https://www.mathworks.com/help/matlab/ref/bubblechart3.html

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How to activate bubble chart
bubblechart was introduced in R2020b. What version of MATLAB do you have? https://www.mathworks.com/help/matlab/ref/bubblecha...

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Plot and color curves depending on the condition
I am unsure what you mean by "he sum of 3d row as y-axis(2.4443, 2.4443, 2.4443 in the example)." For now I am plotting the 5th...

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For loop including zeros in beggining
You don't need to create a for loop. You can simply do this: newY = y(y~=0); newX = x(y~=0);

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How would I add a log scale (i.e 10^-1) as an x axis label to this polar plot?
h = gca; h.RAxis.Scale = 'log' "The coordinate system or ruler class does not support log axis scale." I found a workaround...

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file or directory ~ does not exist?
I believe the dataset needs to be entered as 'subject01.ds'?

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How can I plot a histogram for each of the multiple .mat files located in a folder outside of MATLAB?
Here is one method you can use: directory = '/Users/NAME/Desktop/selectedmatricies/'; %Alternatively, could use: directory = ui...

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Hey all newbie to matlab, was wondering what I can do to fix the "for loop" code I have below, I am getting the "array indices must be positive integers." Thanks in advance!
clear; counter = 0; y=[]; for t = -15:0.2:15; y = [y; counter]; counter = ((t^4)-(3*t^2)+(2*t)-1); end The indi...

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Setting focus in AppDesigner
I found this question here: https://www.mathworks.com/matlabcentral/answers/353504-give-focus-to-an-edit-field

environ 5 ans il y a | 0

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How can I create a scatterplot and map the outputs to a logarithmic colorscale?
You can change the colorbar's scale to logarithmic with the following command: set(gca,'ColorScale','log') Here is it altoge...

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Reactivate the app/gui after running a call back code
Please see solution here: https://www.mathworks.com/matlabcentral/answers/296305-appdesigner-window-ends-up-in-background-after-...

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Using uigetfile to select file in App Designer is causing the matlab script to open after file is selected
You can try this: % Button pushed function: BrowseFileNameButton function BrowseFileNameButtonPushed(app, event) [fileNam...

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need help to find all results in one table , or any possible form
Is this what you were trying to do? R1=1:1:10; R2=1:1:10; a=[22 17 20 7 33 19 8 30 4 9 36 14 12 44 40 ]'; b=[25 18 44 2...

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How do you extract index values from the data tips function into a variable or an array?
You can access it as such: h = gca; %gca stands for get current axes for i = 1:NumberofDatatips h.Children.Children(i).Cont...

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deleting unneeded columns from tables after using them
1. t.YEAR = []; t.MONTH = []; t.DAY = []; t.HOUR = []; t.MIN = []; 2. struct.date = t.Date(1); t.Date = []; struct.tab...

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