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Les Beckham


Last seen: Today Active since 2013

Many years developing flight control algorithms and software

Programming Languages:
C++, C, C#, MATLAB, Assembly
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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...

1 day 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 =...

1 day ago | 1

| accepted

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

1 day ago | 0

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

2 days ago | 2

| accepted

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 ...

4 days 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...

7 days 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, ...

8 days ago | 1

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

9 days 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 ...

16 days 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...

16 days ago | 1

| accepted

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] ...

18 days ago | 0

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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...

18 days ago | 0

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...

22 days 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...

24 days 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...

24 days 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...

28 days 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...

29 days 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...

1 month 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...

1 month 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

1 month 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...

2 months ago | 1

Answered
adding a colormap('jet') to my grapgh please help me
center=[0,0]; %Defining the center of circle ((origin)) %Plotting the first circle at different radius and here i choose from ...

2 months ago | 0

Answered
A table of s versus t.
r=9; omega=100; b=14; t = linspace(0, 0.01, 20) % <<< use linspace instead to generate your t vector % remove the (t) on the...

2 months ago | 0

Answered
Sorting a string according to the values of a vector of type double
It should be as simple as this unless I misunderstand what you are expecting. A = [1.1 2.3 4.4 2.3 5.1]; vegetables = {'carrot...

2 months ago | 0

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Answered
two while loops running at same time
You can't code them as separate loops and have them run "at the same time". Depending on how you want the timing to work, you s...

2 months ago | 1

Answered
Rounding a decimal down
x = [0.143 0.147]; floor(x*100)/100

2 months ago | 1

Answered
Why a condition like If (~Input) changes to a complex condition with ternary operator ?
So, the original condition if (~Input) is C code and not Matlab code? If so, you should use the logical not operator which is !...

2 months ago | 0

Answered
Using the listdlg function
You probably just need to wrap your switch/case processing in a for loop. For example: s = listdlg('ListString', {'One', 'Two'...

2 months ago | 1

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Answered
anticlockwise points coordinates sorting
A = [0 0 ; 1 0.2; 0 1 ; 0 0.6; 1 0 ; 1 1 ; 0.6 1; ...

2 months ago | 1

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Answered
How to use subplot in a UIFIGURE?
When you post a question that states that you are getting error(s), you should post the complete text of the error message (ever...

2 months ago | 0

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