Answered
Loading data from .mat file and converting them to string array
You only save one variable into the mat file and its name is Grades. The syntax load('matfilename.mat', 'varname') tries to fin...

3 years ago | 0

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Answered
How to split the last 4 elements in a column into a new column?
I'm not sure why you want to do this, or what you intend to do with the results, but here is one possible way using a cell array...

3 years ago | 0

Answered
How to use if/then to assign a year to a set of dates?
table_a = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1286455/Data1.xlsx') table_a.date = datetim...

3 years ago | 0

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Answered
How can I plot this date time graph?
load('Years.mat') whos Climatology t = Climatology.TimeSeries + hour(Climatology.HourSeries); scatter(t, Climatology.HeightS...

3 years ago | 0

Answered
Plot path of a aicraft by plot3
t_start = 0; t_end = 100; delta_t = 1; t = t_start:delta_t:t_end; x = zeros(size(t)); y = zeros(size(t)); z = zeros(size(t...

3 years ago | 0

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Answered
Get all row indices where values of to columns reach their maximum
A = [1 2 3; 1 4 3; 2 4 3; 1 4 2]; m = max(A(:,2:end), [], 1) Output = find(all(ismember(A(:,2:end), m), 2))

3 years ago | 1

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Answered
problem with if cycle to determine the datetime
The time returned by datetime('now') will be changing as your code runs, so it seems almost impossible that your if condition wi...

3 years ago | 0

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Answered
how to create matrix c, where first column is vector a, and the last column is vector b without a loop
a = [1;2;3;4;5]; c = [a a+1 a+2 a+3] If you are a beginner in using Matlab, I would suggest taking a couple of hours to go ...

3 years ago | 0

Answered
How do i fix the output of my code?
a=rand(2,2) c=1; cmax=2; r=1; rmax=2; while r<=rmax while c<=cmax a(c,r)=round(a(c,r),2); % a(c,r)*100; << y...

3 years ago | 0

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Answered
Creating Plot with 2 Y-Axis
No there is no way to do that without some manual coding (if only on the command line). But it isn't hard. Here's a simple exam...

3 years ago | 0

Answered
Force 0 tick to appear in a scatter plot
clc, clear, clf n = 0:10; f = n.^2; scatter(n,f, 'k', 'filled') xlim([-1,11]), ylim([-10,120]) ax = gca; ax.XAxisLocation =...

3 years ago | 1

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Answered
Logical operator not evaluating correctly
I would do this in separate steps. X = randi([-20, 20], [1 15]) Y = zeros(size(X)); Y(X < -5) = -1; Y(X > 5) = 1

3 years ago | 0

Answered
Why are tick marks only on one axis when I change the tick spacing?
Try yticks(-4:0)

3 years ago | 2

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Answered
Find exceeds array ERROR
One obvious problem with this code is where you try to access pairs(pr,2) but pairs is a one dimensional (4x1) vector. Perhaps ...

3 years ago | 0

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Answered
one time pad plus randstream
Assuming that the random part of the algorithm is generating the code character vector as you said in one of your comments, some...

3 years ago | 0

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Answered
how to get no of samples?
If you want a specific number of samples between two endpoints, use linspace instead of the colon operator: n = linspace(9.45, ...

3 years ago | 1

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Next value in alphabet
A simpler approach: char('c' + 1)

3 years ago | 1

Answered
Trying to generate subplot figure
It looks like you have created a variable named figure. Type the following command at your command prompt: which -all figure ...

3 years ago | 0

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Answered
Save generated text file to user specified path
You can use uigetdir to open a dialog and allow the user to browse for the folder in which to save the file. Read the documenta...

3 years ago | 1

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Answered
Syntax for pyrunfile with multiple output variables?
This is the way to do that (note that ["A" "B"] is a string array as specified in the documentation for that argument): [A, B] ...

3 years ago | 1

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Answered
Syntax for pyrunfile with multiple output variables?
Did you try this? [A, B] = pyrunfile("pytorch_model.py", ["A" "B"], X=Xpy, y=ypy) Note that ["A" "B"] is a string array as spe...

3 years ago | 1

Answered
How to shift experimental data (not a function) in a loglog plot?
Instead of adding an offset, multiply to shift the data. I used a factor of 10 as an example. x = [0.015 0.02 0.05 0.1 0.2...

3 years ago | 1

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Answered
Floating-Point to Fixed-Point Conversion of IIR Filters
The Name=Value syntax for name/value pairs of function arguments only works in r2021a and above. So, changing this: biquad = d...

3 years ago | 0

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Answered
The Y(:,81) changes linearly with respect to T, I want to modify my code in such a way that when Y(:,81) reaches 2.5E-6 then after that it remains constant through out with T.
Over 100 lines of code to draw a straight line? This plot (with the maximum Y limit applied) can be made in 8 lines of code: T...

3 years ago | 0

Answered
How can I write the coordinates of this geometry?
You don't need a loop. h = 10; th = linspace(pi/2, -pi/2, 100); R = (h/4); %or whatever radius you want x1 = R*cos(th) ; y...

3 years ago | 0

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Answered
need script to create a block scenario
If you only want to draw a 3x3 grid of 1x1 squares this is pretty easy (see below). If you want the 0.75x0.75 and 0.5x0.5 squar...

3 years ago | 0

Answered
How to approximate float function by integer numbers?
I'm assuming you want to replace the floating point calculation with an integer one? I'm not sure how that is going to "spare s...

3 years ago | 1

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Answered
How do you create a plot of a function using fplot?
Maybe you want ezplot instead of fplot. Your anonymous function definition syntax is wrong as well. Try this: f = @(t) 5*t.^2...

3 years ago | 0

Answered
How to Set Up If/Else Statement with Condition of Seeing if Item in Structure Array is a Table
I suggest the istable function. Documentation is here

3 years ago | 0

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Answered
I want to open a tab-delimited XY text file in matlab, use the numerical values of the XY columns to create a matrix and plot the signal.
T = readtable('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1230202/220812_WT_MO_H134R_EA_1391%20015.txt') sc...

3 years ago | 1