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Les Beckham


Last seen: Today |  Con actividad desde 2013

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Many years developing flight control algorithms and software

Programming Languages:
C++, C, C#, MATLAB, Assembly
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Respondida
Variable as placeholder in an "fopen" statement
The way I would do this is this subject = "PO1"; folder = "/Users/addison/Documents/Data/"; filename = "Results2" + subject +...

18 minutos hace | 0

Respondida
Extract data points from a plot corresponding to the plot legend
fig = openfig('ExampleData.fig'); % open and get a handle to the figure % get(fig); ax = get(fig, 'CurrentAxes'); % get handle...

alrededor de 16 horas hace | 0

Respondida
How can I create for loop on contourf and save plots somewhere?
I'm not sure I believe this data since we are seeing probablities of > 1 in some cases (perhaps an interpolation/extrapolation a...

alrededor de 16 horas hace | 0

Respondida
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...

alrededor de 20 horas hace | 0

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Respondida
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...

alrededor de 22 horas hace | 0

Respondida
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...

1 día hace | 0

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

2 días hace | 0

Respondida
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...

2 días hace | 0

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Respondida
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))

5 días hace | 1

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Respondida
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...

5 días hace | 0

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Respondida
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 ...

5 días hace | 0

Respondida
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...

7 días hace | 0

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Respondida
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...

13 días hace | 0

Respondida
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 =...

13 días hace | 1

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Respondida
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

13 días hace | 0

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

14 días hace | 2

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Respondida
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 ...

16 días hace | 0

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Respondida
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...

19 días hace | 0

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Respondida
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, ...

20 días hace | 1

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

21 días hace | 1

Respondida
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 ...

28 días hace | 0

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Respondida
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...

28 días hace | 1

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Respondida
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] ...

30 días hace | 0

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Respondida
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...

30 días hace | 0

Respondida
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...

alrededor de 1 mes hace | 1

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Respondida
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...

alrededor de 1 mes hace | 0

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Respondida
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...

alrededor de 1 mes hace | 0

Respondida
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...

alrededor de 1 mes hace | 0

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Respondida
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...

alrededor de 1 mes hace | 0

Respondida
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...

alrededor de 2 meses hace | 1

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