Les Beckham
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Many years developing flight control algorithms and software
Programming Languages:
C++, C, C#, MATLAB, Assembly
C++, C, C#, MATLAB, Assembly
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Contribute at least one answer each month for 24 consecutive months
Awarded to Les Beckham on 02 Nov 2023
Accept 2 answers given by other contributors
Awarded to Les Beckham on 01 Feb 2023
100 of your answers have been accepted
Awarded to Les Beckham on 18 Oct 2022
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Awarded to Les Beckham on 15 Nov 2020
Publish your first review
Awarded to Les Beckham on 09 Oct 2019
Provide your first answer ever to someone else's question
Awarded to Les Beckham on 20 Jul 2017
Solve a problem for the first time
Awarded to Les Beckham on 08 Feb 2013
Feeds
回答済み
How do I get old "property inspector" popup window in figure?
Try clicking the button at the far left below the window title bar (it shows "Group View" when you hover over it). It looks like...
How do I get old "property inspector" popup window in figure?
Try clicking the button at the far left below the window title bar (it shows "Group View" when you hover over it). It looks like...
21日 前 | 1
回答済み
Detect monotonic decrease and record the corresponding rate
Your "for example" text doesn't seem to match with finding how long it takes to decrease from 25 to 15. So for example, I would...
Detect monotonic decrease and record the corresponding rate
Your "for example" text doesn't seem to match with finding how long it takes to decrease from 25 to 15. So for example, I would...
24日 前 | 0
| 採用済み
回答済み
cant call function from a file
It would have been better if you had posted your code as code (text) rather than a picture, then we could have modified it and r...
cant call function from a file
It would have been better if you had posted your code as code (text) rather than a picture, then we could have modified it and r...
約1ヶ月 前 | 1
回答済み
How to I parse an array of time stamp strings read into a table form a CSV file?
Don't operate on the timestamps as strings, use the datetime and duration types and the associated functions. times = linspace(...
How to I parse an array of time stamp strings read into a table form a CSV file?
Don't operate on the timestamps as strings, use the datetime and duration types and the associated functions. times = linspace(...
約2ヶ月 前 | 1
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回答済み
List of increasing integers
Are you sure that is what you want? It doesn't seem very useful. dim = [2 2 4 2 2 2 2 2 2 2 2 2] int = 1:sum(dim) int(end)
List of increasing integers
Are you sure that is what you want? It doesn't seem very useful. dim = [2 2 4 2 2 2 2 2 2 2 2 2] int = 1:sum(dim) int(end)
約2ヶ月 前 | 0
回答済み
How can I isolate a set of data points on a graph using conditionals?
The data doesn't need to be "linear" to use indexing to select the data that you want. For example: x = 1:10; y = rand(1, 10)...
How can I isolate a set of data points on a graph using conditionals?
The data doesn't need to be "linear" to use indexing to select the data that you want. For example: x = 1:10; y = rand(1, 10)...
2ヶ月 前 | 0
回答済み
how to automate this manual code containing if else conditons?
Here is one approach. I eliminated the extraneous parameter ini for this example. I'm not sure I understand the role of the Ti...
how to automate this manual code containing if else conditons?
Here is one approach. I eliminated the extraneous parameter ini for this example. I'm not sure I understand the role of the Ti...
2ヶ月 前 | 1
回答済み
How to modify the slopes of the sawtooth wave?
It doesn't really make sense to me to talk about angles when referring to a time history of a signal. If you were to plot the s...
How to modify the slopes of the sawtooth wave?
It doesn't really make sense to me to talk about angles when referring to a time history of a signal. If you were to plot the s...
2ヶ月 前 | 1
回答済み
Interphase - How to bring back default view?
If you are talking about the editor being split into multiple subwindows as shown below, go to the View tab in the tool strip an...
Interphase - How to bring back default view?
If you are talking about the editor being split into multiple subwindows as shown below, go to the View tab in the tool strip an...
2ヶ月 前 | 0
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Convert Julian Date + Time in GMT to calendar day + Time in EST
It's not pretty, but it works. yr = '2024'; %<<< renamed to avoid shadowing the year function JDDD = 'J025'; % Julian date GM...
Convert Julian Date + Time in GMT to calendar day + Time in EST
It's not pretty, but it works. yr = '2024'; %<<< renamed to avoid shadowing the year function JDDD = 'J025'; % Julian date GM...
2ヶ月 前 | 1
回答済み
how can i compute Aij?
It appears to work. I ran it for only 2 values of k as it was timing out here in Answers when running with 20 values of k. Wha...
how can i compute Aij?
It appears to work. I ran it for only 2 values of k as it was timing out here in Answers when running with 20 values of k. Wha...
2ヶ月 前 | 0
| 採用済み
回答済み
Extract single-digit and double-digit numbers at the same time from a cell array with "regexp"
a={'1','3','6-10','11-20'}; b=regexp(a,'[0-9]+','match'); %<<< add the + to match multiple numeric characters b{:}
Extract single-digit and double-digit numbers at the same time from a cell array with "regexp"
a={'1','3','6-10','11-20'}; b=regexp(a,'[0-9]+','match'); %<<< add the + to match multiple numeric characters b{:}
2ヶ月 前 | 1
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How to match mean and standard deviation of 2 datasets for data that cannot be less than 0
Your model data doesn't look at all like the observed data, so I'm not surprised that trying to force their statistics to match ...
How to match mean and standard deviation of 2 datasets for data that cannot be less than 0
Your model data doesn't look at all like the observed data, so I'm not surprised that trying to force their statistics to match ...
2ヶ月 前 | 0
回答済み
confirm valid file identifier before flcose?
If you call fopen on the file identifier when the file is closed it will return empty (instead of returning the filename). So, ...
confirm valid file identifier before flcose?
If you call fopen on the file identifier when the file is closed it will return empty (instead of returning the filename). So, ...
3ヶ月 前 | 0
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回答済み
Why is the error in the attached code?
After adding end to all of the functions so that this would even run, you get an dimension error (see below). You are trying as...
Why is the error in the attached code?
After adding end to all of the functions so that this would even run, you get an dimension error (see below). You are trying as...
3ヶ月 前 | 0
| 採用済み
回答済み
Need for help for performance improvement or refactoring methods on this code
Wow! That code gets weird really fast. First, you haven't posted code that will actually run. You've shown three functions ...
Need for help for performance improvement or refactoring methods on this code
Wow! That code gets weird really fast. First, you haven't posted code that will actually run. You've shown three functions ...
4ヶ月 前 | 0
回答済み
How can I break a long column vector (281820X1) into 140 short column vectors (2013X1)?
Use reshape data = (1:281820)'; cols = 140; rows = numel(data) / cols; data_reshaped = reshape(data, [rows cols]); whos ...
How can I break a long column vector (281820X1) into 140 short column vectors (2013X1)?
Use reshape data = (1:281820)'; cols = 140; rows = numel(data) / cols; data_reshaped = reshape(data, [rows cols]); whos ...
4ヶ月 前 | 0
| 採用済み
回答済み
How to include a negative number in initial conditions for Eulers method code?
It is always better to post example code as text rather than a screenshot. Nevertheless... Since the first element of x is -1 ...
How to include a negative number in initial conditions for Eulers method code?
It is always better to post example code as text rather than a screenshot. Nevertheless... Since the first element of x is -1 ...
4ヶ月 前 | 0
回答済み
Plotting .mat file
That mat file doesn't contain anything interesting to plot. load metro.mat whos AudioInfo
Plotting .mat file
That mat file doesn't contain anything interesting to plot. load metro.mat whos AudioInfo
4ヶ月 前 | 0
回答済み
Load .txt file into matrix form
That looks like a good candidate for readmatrix. mtx = readmatrix('X_deg_10.txt'); size(mtx)
Load .txt file into matrix form
That looks like a good candidate for readmatrix. mtx = readmatrix('X_deg_10.txt'); size(mtx)
4ヶ月 前 | 0
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回答済み
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.
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.
5ヶ月 前 | 0
回答済み
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'...
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'...
5ヶ月 前 | 1
回答済み
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 ...
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ヶ月 前 | 0
回答済み
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,...
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ヶ月 前 | 1
| 採用済み
回答済み
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 =...
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 =...
5ヶ月 前 | 0
| 採用済み
回答済み
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...
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...
5ヶ月 前 | 0
| 採用済み
回答済み
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...
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...
5ヶ月 前 | 0
回答済み
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
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
5ヶ月 前 | 1
回答済み
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...
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...
5ヶ月 前 | 0
| 採用済み
回答済み
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...
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...
5ヶ月 前 | 2
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