# Les Beckham

Many years developing flight control algorithms and software

**Programming Languages:**

C++, C, C#, MATLAB, Assembly

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**Content Feed**

Load .txt file into matrix form

That looks like a good candidate for readmatrix. mtx = readmatrix('X_deg_10.txt'); size(mtx)

1 dag ago | 0

| accepted

what's the index exceed error?

On the second pass through the for k = 1:20 loop, you are trying to access the second row of sig, but it only has one row.

3 dagen ago | 0

How can I import this data with a for loop?

You were very close. x = [3 5 7 9 11 12 14 15 16 17]; for i = 1:numel(x) fn = sprintf('PendulumTestData/TD%d/IK/HR_1.mot'...

4 dagen ago | 1

Adding zeros to a column vector to match a larger column vector

new_x= [x; zeros(length(y)-length(x), 1)]; % ^ ^ switch the arguments to zeros % use ...

5 dagen ago | 0

Plots: aligning categorical y-axis labels

% create dummy data y = [1,2,3]; x = [5,10,20]; err = 0.5*ones(size(y)); % draw plot figure(1) yyaxis right errorbar(x,...

5 dagen ago | 1

| accepted

Resolution of plot code errors

Why are you trying to do this with symbolic variables? It works using simple numeric variables. x = linspace(-5, 5, 500); y =...

8 dagen ago | 0

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Issue with delete(obj)

Here are some modifications that should get you closer to what you wan't. Note the comments I've added in the code to point out...

10 dagen ago | 0

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for loop does not iterate

Array indices in Matlab must be positive integers (or logical). You are trying to us xroots, a vector of complex numbers as the...

18 dagen ago | 0

How to save the result of each loop separately

Perhaps this (using a cell array)? y = [3 4]; for i = 1:length(y) x{i} = zeros(y(i), 2) end

18 dagen ago | 1

How would I plot this and then achieve minimum and maximum.

x = 0:0.1:15; % y=(x)^3/3-11(x)^2/2+24x << you were missing multiplication operators * % and the powers need to be .^ (element...

18 dagen ago | 0

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Hexadecimal Data Convert to signed int32

The hex2dec function assumes unsigned integer unless you tell it otherwise. You can either typecast the unsigned result to sign...

18 dagen ago | 2

wildcard in filename for readtable does not work

You must call readtable with a valid filename for an existing file. It will not accept wildcards. You could use uigetfile to o...

19 dagen ago | 0

Indexing with min and numel

vector1 = 1:5 vector2 = 2:7 N = max(numel(vector1), numel(vector2)) [n,I] = min([numel(vector1),numel(vector2)]) I'm not sur...

22 dagen ago | 1

Code gets stuck loading when I try to run it.

In your SEGMENT 1 code you have this line where you are updating time (even though the comment says "Height Update"). I don't s...

22 dagen ago | 0

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how to plot signals on the same scale

For the green one, just subtract the first element of the capacity vector from the entire vector in your plot command. For exam...

23 dagen ago | 1

how to obtain the data from the middle of the binary file using fread in MATLAB?

The second argument to the fread function is the size of the data to read, not an index, as you appear to be trying to use it. ...

23 dagen ago | 0

how to import file?

You were pretty close. Here is one approach, converting your third columns to arrays instead of extracting them as tables with ...

23 dagen ago | 0

While loop in function

Perhaps you meant to test the absolute value of epsilon_a? %known veriables syms x f(x) = exp(-x) - x; eqn = f(x) == 0; mat...

23 dagen ago | 0

Determine the relational operator in an expression

If you can rely on x always being on the left in your "test" expressions, you can test for y being on the left in the result ret...

23 dagen ago | 0

I want to plot parameters and time , with influence three others paramaters , but i dont know how to plot

Note that, in Matlab, functions must be defined at the end of a script. Your code seems to run just fine after reordering it. ...

25 dagen ago | 0

Piecewise function graph help

Use logical indexing: L = 200; d = 10; s = 30; r1_max = 22.36; r2_max = 120.4; r = 0:200; F = zeros(size(r)); idx ...

25 dagen ago | 0

how to zero pad a vector to have the same amount of data as a vector with more data?

Try this: %%% goal: to have the length of 'in' equal the length of 'verb' %%% define inputs [in, fs] = audioread('smash_...

26 dagen ago | 1

printing the name of the data containing a certain value in the workspace

a=10; b=20; c=30; d=40; reference=20; names = ["a", "b", "c", "d"]; [max_delta, idx] = max([a b c d] - reference); fp...

26 dagen ago | 0

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XTicks change in tiled figure if no breakpoint is set before for loop, even if xticks are used

I can't explain why your approach didn't work, but this seems to work. figure tiledlayout(3, 3); percent = 0:100; ticks = 0:...

29 dagen ago | 0

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How do i find x from given y that is closest to my peak or at x=0?

Have you tried interp1?

ongeveer een maand ago | 0

Convert z to e^(-sT) in transfer function

If you have the Control System Toolbox you can use the d2c function to convert from the z domain to the s domain. Note that thi...

ongeveer een maand ago | 2

How to extrapolate the first 5 points

load points.mat plot(points(:,1), points(:,2), '.-'); grid on figure plot(points(:,1), points(:,2), '.-'); grid on xlim([1...

ongeveer een maand ago | 0

Wrong symbolic solution for trigonometry

It looks like your second solve construct only returns one of the solutions. Someone who knows the symbolic toolbox better than...

ongeveer een maand ago | 0

Recognize edges in mosaic-like background - draw horizontal lines and save line coordinates

Big caveat: I'm not even close to an image processing expert so there is probably a smarter way to do this. I noticed that the...

ongeveer een maand ago | 1

title with confusing words

sett = 'SISTEMI_DA_VALUTARE_SENZA_COMMISSIONI'; title(sett, 'Interpreter', 'none') If you read the documentation you will have...

ongeveer een maand ago | 0

| accepted