Steven Lord
MathWorks
I joined The MathWorks in the Technical Support department during the summer of 2001 and transferred into the Quality Engineering department in March of 2004. I now work qualifying the core MATLAB numerical functions (PLUS, MINUS, LU, FFT, ODE45, etc.)
Professional Interests: mathematics, MATLAB
For assistance with MATLAB question please post to MATLAB Answers or contact Technical Support using the Contact Us link in the upper-right corner of the page instead of contacting me directly.
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Content Feed
from a circle to polygon
As @Scott MacKenzie stated, you can approximate a circle as a many-sided regular polygon. The nsidedpoly function will create su...
alrededor de 18 horas ago | 0
Change sympref with shortcut line of code
You could create a simple function to change the preference. You could even have that function retrieve the current value and se...
alrededor de 20 horas ago | 0
does anyone know how to solve this?
Since this is for an exam we can't give you the solution. Each of those three equations are differential equations so the tools ...
alrededor de 23 horas ago | 0
Matlab2020a version of optimization tools does not have a genetic algorithm toolbox
In order to use solvers from Global Optimization Toolbox in optimtool you need Global Optimization Toolbox installed and license...
1 día ago | 1
What is the alternative of HARQEntity() function in MATLAB 5G-Toolbox R2021b in 5G-Toolbox R2021a
Re: upgrading, are your current on your software maintenance?
1 día ago | 0
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How do I install Matlab on Linux Mint
You've completed step 1 of the three steps on the Installation and Licensing documentation page. Continue with steps 2 and 3. A...
2 días ago | 0
How can I compute the following triple integral for a function handle that is expressed by x(1), x(2), x(3)?
integral3 requires the function handle you pass in as the first input to accept three input arrays and return an output array of...
2 días ago | 0
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How could I graphic a matrix AxBxC
How do you want the picture of your 3-dimensional array to look? If there's a picture from a book or article that you're trying ...
2 días ago | 0
Please help me to look at the code below. Thx
Change the name of the output variable on line 15. When a variable named min exists you will not be able to call the min functio...
3 días ago | 0
| accepted
please help me, this is my preliminary exam but may prof did not teach this to me. thank you
Since this is an exam question I won't provide you with the answer, but I will point you to the section of the documentation tha...
3 días ago | 0
Make an Histogram with 24 bars
The histogram function can operate on datetime and duration arrays. Here's an example using datetime; you should be able to adap...
3 días ago | 0
Problems with function num2str
If you want to convert a numeric array to an array of text where each element of the numeric array becomes its own element in th...
3 días ago | 0
How do i fix line13; Parse error at'=': usage might be invaild Matlab syntax? why it gives error ?
If you want to call max with two output arguments you need to combine lines 12 and 13 together and add square brackets. Use this...
3 días ago | 0
I am a single person business; may I install Matlab on my laptop computer as well as my desktop computer on the same license?
For an official answer to licensing questions, please contact Customer Service and/or your sales representative. Depending on w...
4 días ago | 0
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how to plot each bin of data individually?
Can you tell us which of the thumbnail pictures for the plotting functions included in MATLAB look closest to what you want to p...
4 días ago | 0
Please help me an error occur
Let's look at each of the terms you're trying to concatenate together. term1 = 1:5 term2 = 6:-0.2:5.2 term3 = [13 4 - 3 1 30]...
4 días ago | 1
turn code into a class???
A function accepts input arguments and returns output arguments. What do you want your function to accept as inputs and what do ...
5 días ago | 0
How to use Comparison tags inside my class? or any other operators?
You haven't defined what it means to perform the == operator (whose function name is eq) on instances of your class. Did you in...
5 días ago | 1
| accepted
Convert Python time to Matlab datum
Don't convert to a datenum. Depending on how the Python timestamp represents the date and time, I suspect some of the values for...
7 días ago | 0
PSAT does not work
I suspect that toolbox has a settings.m file that is in conflict with the settings function included in MATLAB. You can check th...
8 días ago | 0
| accepted
Can someone explain to me line by line whats happening in this code? Im REALLY in need of help.
If you mean what each of the commands does, you'd probably get faster answers if you looked at the documentation for the functio...
9 días ago | 0
Maximizing along n-1 dimensions of an n-dimensional array without a for loop
VV=randi(1000, 5, 5, 5); [values, locations] = max(VV, [], 1:ndims(VV)-1, 'linear'); check = [reshape(values, [], 1), reshape(...
9 días ago | 1
How to show that calculation is going in MATLAB App
You could use a uiprogressdlg dialog.
10 días ago | 1
I cannot find function hRISelect for Matlab's 5G Toolbox example.
Try opening the example in MATLAB. When you do MATLAB will change directory to the one containing the example. Look in that dire...
10 días ago | 0
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Multiplying a 2d matrix with each slice of 3d matrix
In release R2020b we introduced the pagemtimes function for this purpose.
11 días ago | 2
problem in unresolvedSymbols.txt: how to solve the undeployable problems?
Creation of symbolic variables using sym or syms is not supported with MATLAB Compiler. You may be able to perform your symbolic...
13 días ago | 0
Looking for the example dataset used in the tachorpm demonstration (to do a live demo for a class).
Check the output of the ver function. Do you have Signal Processing Toolbox installed? I suspect you do not.
13 días ago | 0
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Can I get the mathematical expression of an interpolation?
Are you looking for a mathematical expression for the fitted model or do you just want to be able to evaluate the fitted model a...
14 días ago | 0
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Splitting matrix and create new matrix
Can you create variables named B1, B2, ...? Yes. Should you do this? The general consensus is no. See that Answers post for an ...
14 días ago | 0
MATLAB online doesn't work
There was an outage between 2:01 AM and 6:50 AM EST according to the Application Status page. Were you trying to use MATLAB Onra...
14 días ago | 0
