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Steven Lord

MathWorks

Last seen: Today Active since 2002

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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Answered
large errorbars on semilogx
What's the difference between the logarithm of 1 and the logarithm of 2? format longg x1 = log([1 2]) delta1 = diff(x1) Now ...

ongeveer 8 uur ago | 0

Answered
can I use matlab on new device?
It is possible to deactivate MATLAB on a machine (even if it is not available) and reactivate it on another computer.

ongeveer 14 uur ago | 0

Answered
Matlab Cloud Licensing / Azure AD, instead of internal Flexlm server
Please contact Technical Support directly using this link. They can work with you to determine what licensing options are availa...

ongeveer 14 uur ago | 0

Answered
Undefined function 'bisect' for input arguments of type 'function_handle'.
Another possibility is that the user saved it to a file not named bisect.m. If the name of a function file and the name of the m...

1 dag ago | 0

Answered
What does cppelt function do in findchangepts
which -all cppelt This is a private helper MEX-file in Signal Processing Toolbox. I don't believe we distribute the source code...

3 dagen ago | 0

Answered
Download MATLAB 2023b for Windows off the network
Please try the instructions in this Answers post. If you encounter difficulties while doing so please contact your license admin...

3 dagen ago | 0

Answered
Need help subtracting and doing if statements for time
There doesn't seem to be any date information included with your data, so I'd use duration instead of datetime. I'm mostly using...

3 dagen ago | 0

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Answered
Problem with vpa integral
This type of error indicates you're assiging a symbolic expression into an element of a double array. When you do this, MATLAB w...

4 dagen ago | 0

Answered
How to Rewrite This Section of Code as a For Loop
Conceptually, isn't taking the sum of an array of data just the same as repeatedly adding (+) each element to a running total? [...

4 dagen ago | 0

Answered
Will Quality of Documentation be better in 2024 Products?
Release R2024a has not been released yet. As such we can't answer questions about it. But I am curious about your first sentenc...

5 dagen ago | 1

Answered
After installation of MATLAB_R2023b in MacBook Air M1 2020. When I start MATLAB, I am getting the following error after few seconds. Though I am able to work in the background
Are you using a JRE other than the one included with Amazon Corretto 8? If so, try the workarounds listed in Bug Report 3104060....

5 dagen ago | 0

Answered
simulink test tutorial file
Open the example using the command that gets copied to the clipboard when you press the Copy Command button. That model is part ...

6 dagen ago | 0

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Answered
How do I make a weighted graph (with road intersections as nodes) from a map?
If you have a list of coordinates and a list of which nodes are connected by a road, use the graph or digraph (if you have one-w...

9 dagen ago | 0

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Answered
"The MathWorks" or simply "MathWorks"?
The Tax ID and Addresses section of the Policies and Statements page state the corporate name is The MathWorks, Inc. MathWorks®...

12 dagen ago | 1

Answered
Questions on concurrent/floating licenses
Please contact the Sales department directly using this link. They can work with you to determine the license setup that best me...

12 dagen ago | 0

Answered
Script to run another script, specifying a parameter's value
Is there a simple way to make the parent script tell the child script the value of the parameter to use, or for the child script...

12 dagen ago | 0

Answered
Dynamic properties auto completion in argument validation
The testclass class doesn't have a property named dynamicProp1, and the documentation for the syntax you're using states "A usef...

13 dagen ago | 0

Answered
Smart way of adding paths
Use fullfile. a='c:\folder1\'% PC1 b='d:\folder2\'% PC2 c='folder3\' P = fullfile(a, c) Note that the MATLAB that MATLAB An...

14 dagen ago | 1

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Answered
Invalid expression. Check for missing multiplication operator, missing or unbalanced delimiters, or other syntax error. To construct matrices, use brackets instead of parenthe
>> function funcion('grid1000.dat',1833;1005;'01'), (columna1) You cannot type a function definition in the MATLAB Command Wind...

14 dagen ago | 1

Answered
Open .bin file contains words and floating numbers
Without knowing the format of the file, it's going to be effectively impossible to interpret the data you read from the file. W...

15 dagen ago | 0

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Answered
how to filter data by date?
Use a timerange to index into the timetable.

15 dagen ago | 0

Answered
using fopen inside of a class
txtout (I believe) is a public property by default, so any idea why it won't budge? Your class is a value class. Value classes ...

15 dagen ago | 1

Answered
Recurring Matlab error 5201 (Unable to communicate with required MathWorks services)
What did MathWorks Support say when you collected the information listed in step 4 on that troubleshooting page and contacted th...

15 dagen ago | 0

Answered
How can i encode strings in a array to numbers?
If you have data where some of the columns are text and some are numbers, consider storing your data in a table array rather tha...

16 dagen ago | 0

Answered
small floating point has been considred as zero value!
More likely than not, your value for x is not what you think it is. If we run your code on Answers: x=0.16 if x>0.1 d=1 ...

17 dagen ago | 2

Answered
I am keep on getting this error in my matlab code when i try to execute this code.
Why have you written your own fprintf.m file? That means you won't be able to call the fprintf function that is part of MATLAB a...

19 dagen ago | 0

Answered
code no longer working but was fully functional and changed nothing
Somewhere before this line of code: Sjforce_filtered=filtfilt(b,a,SjForce); at least one element of SjForce became non-finite ...

19 dagen ago | 1

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Answered
Adding numeric values to imagesc
This function didn't exist when the question was originally asked, but I suspect the original poster had something like heatmap ...

20 dagen ago | 0

Answered
how to build a n*n weighted matrix
Do you want to create the weighted adjacency matrix or do you want a digraph object that you can manipulate and analyze (asking ...

20 dagen ago | 0

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Answered
why the arrangement of elements are changing?
I think what you're asking is how you can force ga to always return b as an increasing vector ('ascend' using the wording from t...

21 dagen ago | 0

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