Les Beckham

Last seen: 2 jours il y a | Actif depuis 2013

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Many years developing flight control algorithms and software

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

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remove non-unique columns even if the sign has changed
Perhaps this? load newca.mat [~, icol, ~] = unique(abs(newca1).', 'rows', 'stable') mlag = newca1(:,icol)

12 jours il y a | 0

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Stoping / breaking ginput (or ginput(n)) before entrering any value / clicking any single time
Ctrl-C will abort ginput (though it does throw an error).

16 jours il y a | 0

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Why trapz is giving me negative area?
I get a positive value for the area. load power.mat load frequency.mat plot(freq, power) grid on area = trapz(freq, power) ...

16 jours il y a | 0

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how to have a matlab script give you a choice to automatically open other scripts
That seems like a questionable workflow. Nevertheless, this should get you started. % StartingScript.m response = questdlg('O...

24 jours il y a | 0

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I need to correct the script for coloring map
You need to reexamine the logic you are using to determine the masks. All three masks are all zero, thus no coloring. % clc; ...

27 jours il y a | 0

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2D matrix resize or interpolation
For Q1, I would suggest imresize. Can you clarify what you mean by "offset x,y values" in Q2?

environ un mois il y a | 0

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How to rotate rectangular with a an angle?
Perhaps this is what you are trying to do. The hgtransform and makehgtransform functions are designed for transforming graphics...

environ un mois il y a | 1

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Counting the occurrences of a digit in a book
The printer has printed a book with 'p' pages. How many times did they use the character 'd'? In other words, how many times doe...

environ 2 mois il y a

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An Ohm's Law Calculator
*BACKGROUND / MOTIVATION:* Many important observations in math and science can be described by short, but powerful, equations...

environ 2 mois il y a

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How long do each of the stages of the rocket take to burn?
A space rocket has 3 stages: - stage 1, s1; - stage 2, s2; - stage 3, s3. If s1 burns 3 x as long as s2 which burns ...

environ 2 mois il y a

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Remove all the words that end with "ain"
Given the string s1, return the string s2 with the target characters removed. For example, given s1 = 'the main event' your ...

environ 2 mois il y a

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Instructions Following
Complete the function follow(s) which, for a given string (containing only the letters 'f', 'b', 'l', 'r'), calculates the final...

environ 2 mois il y a

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plot the shielding effectiveness
You haven't really asked a question. If you just want a plot of the data pasted into your "question", here you go. data = ... ...

environ 2 mois il y a | 0

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How to force a (small) gap on axis
You can use the axis command to specify some padding around the data plot(-1:0.1:1) grid on plot(-1:0.1:1) axis padded gr...

2 mois il y a | 0

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How to load a function to use in Matlab? In this case the DiskMargin function.
diskmargin is a function in the Robust Control Toolbox. You will need to install that toolbox. Also, that function was added t...

2 mois il y a | 0

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code to tell mlx or m files
If you want your function to know if it was called from a .m file or a .mlx file you can do that using dbstack. However, I'm no...

2 mois il y a | 1

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Read and process a Fortran90 binary file
In light of the additional variable size information and sample file provided by the OP, and the information from Walter about F...

3 mois il y a | 0

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Read and process a Fortran90 binary file
It would help to have a sample file to experiment with. Nevertheless, assuming that the write call that you have shown is the o...

3 mois il y a | 0

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Ramp function with steady-state
Maybe something like this using lsim? t = 0:0.01:30; u = 3*t; u(u > 30) = 30; sys = tf([1 0], [1 1]); % <<< s / (s+1) -- rep...

4 mois il y a | 0

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How to adjust the decimal place in fprintf statement
Note that the Matlab function for printing to the command window is fprintf, not printf. Note also that it doesn't make sense t...

4 mois il y a | 0

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Kalman Filter Velocity data looking too similar to position data
It appears that you aren't differentiating the position to get the velocity, you are just multiplying it by dt. Thus the two pl...

4 mois il y a | 0

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anyone know how to open .dmi file
There are two issues. One is that your fread command is converting the int8 data to doubles when reading. The other is that th...

4 mois il y a | 0

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How can I insert a variable into a plot legend, with a special character following the variable?
plot(magic(4)) M = 10.5; %<<< made up value for variable M legend('', '', '', sprintf('Gradient: %.1f\\circ/mm', M))

4 mois il y a | 0

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Given an unsigned integer x, find the largest y by rearranging the bits in x
Given an unsigned integer x, find the largest y by rearranging the bits in x. Example: Input x = 10 Output y is 12 ...

5 mois il y a

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Calculate area of sector
A=function(r,seta) r is radius of sector, seta is angle of sector, and A is its area. Area of sector A is defined as 0.5*(r^2...

5 mois il y a

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Convert radians to degrees
Given input in radians, output to degrees

5 mois il y a

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Need to get matlab to display the continuous time transfer function
Please explain exactly what the problem is. You need the Control System toolbox, not the "command tool box", whatever that is. ...

5 mois il y a | 0

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How can I write data to a text file in a user-specified location that is already populated with a standard header?
Probably the easiest way to do this is to create a text file containing your header text and then call system() to concatenate t...

5 mois il y a | 0

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how to resolve fprintf error when dealing with whole numbers?
a = [16.0541, 17]; for i = 1:2 fprintf('\n%s','"values":{'); fprintf('\n%s','"min":'); fprintf('%f',a(i)); % <<...

5 mois il y a | 1

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Unable to create a exponential graph
I guess I don't really see what the problem is. Follow your own comments and adjust a and b to match the expected curve. Can y...

5 mois il y a | 0

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Les Beckham

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