Community Profile

# Les Beckham

Last seen: Today Active since 2013

Many years developing flight control algorithms and software

Programming Languages:
C++, C, C#, MATLAB, Assembly
Professional Interests:

All

#### Content Feed

View by

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

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

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

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

2 days ago | 2

| accepted

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

| accepted

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

| accepted

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

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

9 days ago | 1

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

| accepted

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

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

| accepted

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

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

| accepted

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

| accepted

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

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

| accepted

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

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

| accepted

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

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

| accepted

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.

2 months ago | 1

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

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

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

| accepted

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

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

2 months ago | 1

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

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

| accepted