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Is there a MatLab online training course that teaches you how to create and use functions?
There is a module in the Matlab Fundamentals online training that concentrates on functions: https://matlabacademy.mathworks.co...

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finding a numeric pattern in a vector
Note that I added an additional test at the end of vec to make sure this handles a multi-digit number in the middle position of ...

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How to extract specific dates from a datetime table?
whos('-file', 'DATE1.mat') whos('-file', 'DATE2.mat') load('DATE1.mat') load('DATE2.mat') whos head(datet) head(B) found_...

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How do I use xline() to plot values calculated in a for loop?
Your x is going to be symbolic based on the code you posted (you can verify this by using the whos in the Command Window or by l...

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What is the previous syntax for this function?
The strcat function has been around for a long time. strcat("Hello", "World")

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output of two function results
You need to provide two output variables when you call the function. Note that the names you use when you call the function don...

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Why are values not rotated?
P = [1 2]*10^7; % made up data to test with S = [1 2; 2 3]; T = [0 70; 0 100]; plot(S(1,:),T(1,:), S(2,:), T(2,:...

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Calculate the temperature distr
First of all, format your code (type Ctrl-A then Ctrl-I) in the Matlab editor. Second, add more comments. For example, is m ...

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Factorial using a for loop
Your code works fine (though I would add semicolons to the end of all lines except the for and end to avoid spewing a bunch of s...

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read several csv files with space in the name format
i = 1; filename2 = strcat('opt.w.matrix.reg. ',int2str(i),'.csv') As you have seen, strcat strips leading and trailing spaces....

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remove decimals from title when using sprintf
Q=2021; %year x = 0:10; y = x.^2; plot(x,y) grid on title(sprintf('text %d',Q)) % <<< replace %f with %d

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Error using .^ not enough input arguments
Perhaps you meant this instead % L = integral( sqrt(1+{power(dy/dx),2}),x1,x2); % ^ ^ remove...

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Most readable syntax to fill table in a for cycle
There probably isn't a significantly cleaner way to do this. See below for a way to suppress the warnings. format short e x =...

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How do i do x1<=x<=x2 in matlab?
You have to split up the compound condition into two conditions: (x1 <= x) && (x <= x2) If these terms are scalars, that will ...

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Formatting read data from text files
text_data = fileread('Question.txt'); disp(text_data)

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How can I save an animated plot as a GIF?
Check the answer to this question: https://www.mathworks.com/matlabcentral/answers/94495-how-can-i-create-animated-gif-images-i...

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animated sine wave continously
This should get you started. Adjust as desired. Note that the animation won't show here, but I tested it my local copy of Matl...

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saving workspace variables individually?
a = 1; b = 2; c = 3; vars = who for v = 1:numel(vars) save(sprintf('%s.mat', vars{v}), vars{v}) end dir

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Color in plot from Table
Just a couple of issues. You need column vectors to insert into the table, and you can only have a scalar string or char vector...

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Convert C code to Matlab code for reading binary file
Your Matlab struct doesn't match the definition in the C code. For example, the third element is a char array of 100x1000 in th...

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Saving a structure array, not fields of it
s1 = struct('a', 1, 'b', 2') save('s1.mat', 's1') % don't use the '-struct' option clearvars whos load('s1.mat') whos Anot...

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Find column number for every row in matrix
A = [ -1 4 1 1 -1 -1 -5 4 -1 ]; [row, col] = find(A > 0) [~,idx,~] = unique(row, 'first...

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Plot colored angle between two lines on the YZ plane
This doesn't look exactly like what you want, but should get you started. meta = [14.97, 29.84, 5.61]; meta_plan1 = [15, -10, ...

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I have a problem with butter filter and I can’t fix it
The error was because you were trying to set the cutoff frequency at the Nyquist frequency (half the sample rate). The error me...

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Simple loop with equation problem
Time(1) = [0]; Quantity(1) = 0.2; % Corrected initial condition Xt1 = 0.2; a = 0.5; t = 9; for i=1:t Xt1 = a * Xt1 * ...

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How to use isoutlier based in a part of the data?
It seems like what you are wanting to do is to chop off the "increase at the end". Here is one way to do that by searching back...

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reading serial COM port on the fly (weighting scale -> WinPC)
The serial object overload of fopen doesn't have any output arguments, so change that line of code to the following. fopen(p) ...

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Plotting different color points based on array values
x = linspace(0, 10); y = sin(x); % test data yhi = y; ylo = y; threshold = 0.5; idxlo = y <= threshold; idxhi = y > thresh...

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How to bring a patch to the bottom of a figure?
The code you originally posted already had the lines on top. Just plot the lines after the patch. hold on c = fill([0 4 5 2 1...

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Not enough input arguments
Perhaps you have added the control system toolbox since last time this worked? That toolbox contains a function named pid that ...

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