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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How to obtain the activation key for the R2026a matlab
If you're trying to use your company or educational institution's license, ask whoever maintains the organization's software lic...
4 días hace | 0
why does factor(1) return 1? shouldn't it return null?
Technically, yes. If you want prod(factor(x)) to return x and the output of factor to only include prime numbers, having factor(...
5 días hace | 0
Why does rng('shuffle') always return a Seed of 0 when first run?
This is the correct and expected behavior. When called with an input argument and an output argument, the rng function returns ...
5 días hace | 0
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Taking part in the boundary calculation from the function
So you want to ensure that x(3) <= x(1)+x(2)-0.0001? That's not a bound, that's a linear constraint. Write it as -x(1)-x(2)+x(3...
12 días hace | 1
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using imaginary notation gives an error (-J)
If by "carrots" you mean an orange squiggle underline in the Editor representing a Code Analyzer warning, and if just the "q1" s...
24 días hace | 0
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MATLAB Randomly Changes Values in Array to Scientific Notation
You may think the values in the array are integer values, but they're not. They're just barely different from an integer value. ...
25 días hace | 2
Teaching Matlab to a visually impaired person
I have not gone through these myself, but I suspect that the MathWorks training courses are accessible for visually impaired per...
25 días hace | 1
How to calculate the average value of a vector in MATLAB?
If you're not sure what function to use or if there is a function to use for a particular task, I recommend searching the MATLAB...
30 días hace | 0
Can I solve a symetric system using only the lower triangular portion of the matrix?
The backslash operator (mldivide, \) does not have a way to specify that the coefficient matrix you pass to it actually only rep...
alrededor de 1 mes hace | 0
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How to set a tolerance?
You indicated you've resolved your problem, but depending on your exact goal some tools that might help you with problems like t...
alrededor de 1 mes hace | 0
Just a question: Will there be a 2026 version for macOS Intel?
From the current System Requirements page for Mac: "Note: MATLAB is no longer available for Macs with Intel processors" The Pla...
alrededor de 2 meses hace | 1
Solving diffeerntial equations numerically
If you use the ode object you can call its solve method to return the solution at specified times. If you're using a specific O...
alrededor de 2 meses hace | 0
How can I dynamically create and configure a subclass of an abstract class from a file or script in one step in MATLAB?
As written, each time you add a new type of Vehicle you need to modify Garage to be able to handle that new type of vehicle. Thi...
2 meses hace | 0
Access to downloads for install
If you already have a license but need information on where/how to download the software to be installed, please contact Custome...
2 meses hace | 0
How to find a function in the path - securely?
The complexity explodes, such that a simple task like searching a function file needs a pile of exceptions and indirections. S...
2 meses hace | 1
computation of symbolic terms and error analysis
You indicated you've already found the solution (the expression you're trying to convert to double still has symbolic variables ...
3 meses hace | 0
Can you get matlab to add a really small number to a big number and retain precision
p = -1e17 + sqrt(1e34 + 1e18) p is in fact exactly 0 if you do the calculation in double precision. p == 0 % true Why didn't ...
3 meses hace | 3
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trainnet function - randomness and repeatability
What happens when you reset the state or seed of the random number generator before each attempt to train the network? Let's cho...
3 meses hace | 0
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Trying to solve for a number of variables in a matrix. Getting a structfun error.
Let's look at what solution is after the call to solve. I just added in a few semicolons to suppress some of the output. E = 10...
3 meses hace | 0
Financial Toolbox installed but bndprice function not found
According to the output of ver that you posted, you're using MATLAB Online (basic). According to the FAQ on the page describing ...
3 meses hace | 0
Reading a string & sorting it into usable variables
Let's take a sample string. S = "Layup: [45/-45/0/90/90/0/-45/45]"; Get the text after the leading [ S2 = extractAfter(S, "["...
4 meses hace | 0
I have downloaded this package, but can not seem to use the "readDistance' command.
Searching the documentation for functions named readDistance, I found two hits on the first page. The first one requires the MA...
4 meses hace | 1
Confidence interval in fit
Use the confint function on the object returned by fit.
4 meses hace | 0
Dialog box Unable to resolve the name 'matlab.io.internal.xlsreadSupportedExtensions' error prevents me from opening a file
The fact that the error occurs on line 5 of pad (which in my installation of release R2025b is completely blank) in a call to re...
4 meses hace | 0
MATLAB standalone App Dynamic Class
From the documentation "MATLAB Runtime only works on MATLAB code that was encrypted when the deployable archive was built. Any f...
4 meses hace | 0
Indexing behavior of table properties
In the former case, it is table's indexing code that is performing all the indexing steps. It knows how to index into the proper...
4 meses hace | 1
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pathdef and resulting path very long
If you have a lot of products and/or add-ons in your installation, the path may have a lot of entries. V = ver; S = split(path...
4 meses hace | 0
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fread a double that's been broken up into four 16 bit words
Let's make four random 16 bit integers. A = randi([intmin('uint16'), intmax('uint16')], 1, 4, 'uint16') Now we can typecast th...
4 meses hace | 2
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How to read in m-files into a Matlab-generated-Exe
From the documentation "MATLAB Runtime only works on MATLAB code that was encrypted when the deployable archive was built. Any f...
4 meses hace | 0
Where can I download matlab/simulink example projects?
You're probably not going to be able to run the whole example without all the products listed in the box in the upper-right corn...
4 meses hace | 0
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