How can I correct the wrong size of a variable (matrix instead of a vector)?
This line here creates a matrix. When one numerical value (n) is entered into the zeros function, it creates a n by n matrix. m...

2 months ago | 1

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How to show that calculation is going in MATLAB App
You can create a status text in the App Designer by dragging "Label" onto your app in Design View. You can edit the font, alignm...

2 months ago | 0

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Flip a matrix from 31 x 1000 to 1000 x 31 and retain same order of elements
You can tranpose the matrix with a ' matrix = rand(3,10) matrix_transposed = matrix'

2 months ago | 1

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How do I change color diffusion in jet colormap?
%% Example data x = (2:-0.1:0); data = sin(x); %% Shift the values towards the center, so you get a circle instead of an an...

2 months ago | 1

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I want to change the name of elements in a variable
You can save a string array with those names as such: Countries = ["UK";"Canada"; "France";"Italy";"Japan";"United States"]...

2 months ago | 0

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

2 months ago | 1

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...

2 months ago | 0

How can I create a data table and export it as an excel file?

2 months ago | 1

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

2 months ago | 0

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...

2 months ago | 0

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...

2 months ago | 0

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...

2 months ago | 0

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...

2 months ago | 0

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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-...

2 months ago | 1

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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....

2 months ago | 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...

2 months ago | 0

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 = ...

2 months ago | 0

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 ...

2 months ago | 1

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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...

2 months ago | 0

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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...

2 months ago | 0

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

2 months ago | 0

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...

2 months ago | 0

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...

2 months ago | 1

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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);

2 months ago | 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...

2 months ago | 0

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

2 months ago | 0

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...

2 months ago | 2

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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...

2 months ago | 0