Steven Lord
MathWorks
Followers: 10 Following: 0
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.
Feeds
已回答
Which toolbox includes hPre6GCPU?
The Appendix section at the end of that example states that hPre6GCPU is a helper function. Copy the command to open the example...
Which toolbox includes hPre6GCPU?
The Appendix section at the end of that example states that hPre6GCPU is a helper function. Copy the command to open the example...
17 hours 前 | 1
| 已接受
已回答
When I use MATLAB's export image feature, I name the file "untietled" and all other names, MATLAB crashes and automatically quits
If you look at the crash log file, do you see a reference to graphics_context.dll in it? If so, try updating to release R2023a U...
When I use MATLAB's export image feature, I name the file "untietled" and all other names, MATLAB crashes and automatically quits
If you look at the crash log file, do you see a reference to graphics_context.dll in it? If so, try updating to release R2023a U...
12 days 前 | 0
已回答
How can I distribute a single sprintf input to multiple formatting operators?
You can specify which of the data inputs you want each "section" of the format specifier input you want to use by adding a numbe...
How can I distribute a single sprintf input to multiple formatting operators?
You can specify which of the data inputs you want each "section" of the format specifier input you want to use by adding a numbe...
14 days 前 | 0
| 已接受
已回答
Does MATLAB work on any Cloud Computing Service?
It is possible to use MATLAB in the cloud, as described on this page on the MathWorks website. If the information on the Resour...
Does MATLAB work on any Cloud Computing Service?
It is possible to use MATLAB in the cloud, as described on this page on the MathWorks website. If the information on the Resour...
16 days 前 | 0
已回答
Enforcing naming conventions with a custom codeAnalyzerConfiguration.json
Compare the documentation page you linked (which is for the current release, which right now is release R2025a) with the version...
Enforcing naming conventions with a custom codeAnalyzerConfiguration.json
Compare the documentation page you linked (which is for the current release, which right now is release R2025a) with the version...
16 days 前 | 2
| 已接受
已回答
Compatability of runtime engine with matlab gui application
In general, you probably don't want to use the path function with an input argument.[*] That changes the MATLAB search path to w...
Compatability of runtime engine with matlab gui application
In general, you probably don't want to use the path function with an input argument.[*] That changes the MATLAB search path to w...
22 days 前 | 0
| 已接受
已回答
reading CSV files with multiple rows of strings and multiple rows of floats
All the data in a variable in a table must be the same type. You can't have one where the first four rows are text and the next ...
reading CSV files with multiple rows of strings and multiple rows of floats
All the data in a variable in a table must be the same type. You can't have one where the first four rows are text and the next ...
22 days 前 | 0
已回答
Use string to define variable
Can you dynamically create variables with numbered names like x1, x2, x3, etc.? Yes. Should you do this? The general consensus ...
Use string to define variable
Can you dynamically create variables with numbered names like x1, x2, x3, etc.? Yes. Should you do this? The general consensus ...
25 days 前 | 1
已回答
Documented name-value argument not recognized
The problem is that the documentation of publish is wrong. The correct name-value argument is outputFolder. The problem is that...
Documented name-value argument not recognized
The problem is that the documentation of publish is wrong. The correct name-value argument is outputFolder. The problem is that...
27 days 前 | 0
| 已接受
已回答
Plotting a 2D array of values as discrete squares without interpolation
load('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1838126/StressData.mat') whos If I understand what you're...
Plotting a 2D array of values as discrete squares without interpolation
load('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1838126/StressData.mat') whos If I understand what you're...
1 month 前 | 0
已回答
speeding up the data analysis
What does the Profiler indicate is the section of code that takes the most time? Does the Code Analyzer app or the code analyze...
speeding up the data analysis
What does the Profiler indicate is the section of code that takes the most time? Does the Code Analyzer app or the code analyze...
1 month 前 | 0
| 已接受
已回答
Problem with comments in XML files
Do you need the comments to be imported? If not, and if upgrading to release R2020b or later is an option, consider using readst...
Problem with comments in XML files
Do you need the comments to be imported? If not, and if upgrading to release R2020b or later is an option, consider using readst...
1 month 前 | 0
已回答
Toolbox compatibility with licenses from different years
Are you specifically asking about the license manager or are you asking about using a combination of products from different rel...
Toolbox compatibility with licenses from different years
Are you specifically asking about the license manager or are you asking about using a combination of products from different rel...
1 month 前 | 2
| 已接受
已回答
how to find elements between two values
If you're using release R2014b or later, use the isbetween function. x = randi([-10 10], 5, 5) xinrange = isbetween(x, -5, 5) ...
how to find elements between two values
If you're using release R2014b or later, use the isbetween function. x = randi([-10 10], 5, 5) xinrange = isbetween(x, -5, 5) ...
1 month 前 | 0
已回答
how to replace char in array with a double
Another way to do this would be to set up a vector and use indexing. Let's try it with a valid and an invalid Roman numeral stri...
how to replace char in array with a double
Another way to do this would be to set up a vector and use indexing. Let's try it with a valid and an invalid Roman numeral stri...
1 month 前 | 1
已回答
I am getting this error while running the code related to quantum computing
If you're following the example from this documentation page, note this line (I added emphasis.) "To plot any quantum state of a...
I am getting this error while running the code related to quantum computing
If you're following the example from this documentation page, note this line (I added emphasis.) "To plot any quantum state of a...
2 months 前 | 0
已回答
I don't understand how you are meant to use onCleanup in a script
The purpose of an onCleanup object is to execute the function handle with which it was created when the onCleanup object gets de...
I don't understand how you are meant to use onCleanup in a script
The purpose of an onCleanup object is to execute the function handle with which it was created when the onCleanup object gets de...
2 months 前 | 1
已回答
Text in plot that has x-axis in terms of datetime
Don't use datenum anymore. It is not recommended. Instead, use ruler2num or num2ruler to convert the datetime data into coordina...
Text in plot that has x-axis in terms of datetime
Don't use datenum anymore. It is not recommended. Instead, use ruler2num or num2ruler to convert the datetime data into coordina...
2 months 前 | 0
已回答
Question about using "diary" command
I'm not 100% sure of this, but perhaps the -logfile startup option would be of use to you. I think it might update the log file ...
Question about using "diary" command
I'm not 100% sure of this, but perhaps the -logfile startup option would be of use to you. I think it might update the log file ...
2 months 前 | 0
已回答
Why Can an Anonymous Function be Defined with a Non-Existent Parameter?
Once f() is defined, I don't believe there is any way to subsequently define y such that f() works. Sure there is. Let's first ...
Why Can an Anonymous Function be Defined with a Non-Existent Parameter?
Once f() is defined, I don't believe there is any way to subsequently define y such that f() works. Sure there is. Let's first ...
2 months 前 | 3
| 已接受
已回答
looking for strictly recurrent and fast moving median implementation
If I understand what you're trying to do, you have a process that generates data (like streaming a video, where you don't necess...
looking for strictly recurrent and fast moving median implementation
If I understand what you're trying to do, you have a process that generates data (like streaming a video, where you don't necess...
2 months 前 | 0
已回答
Indexing vectors with a zero and creating a "predicted" vector knowing what the diff should be
If you believe they are uniformly spaced, the isuniform function can confirm this (and give you the uniform spacing) or refute i...
Indexing vectors with a zero and creating a "predicted" vector knowing what the diff should be
If you believe they are uniformly spaced, the isuniform function can confirm this (and give you the uniform spacing) or refute i...
2 months 前 | 0
已回答
How to implement N number of realizations of a for loop?
Each time through the loop, you're completely overwriting the variable Uout. Compare: for k = 1:5 z = k.^2 % Overwrite wit...
How to implement N number of realizations of a for loop?
Each time through the loop, you're completely overwriting the variable Uout. Compare: for k = 1:5 z = k.^2 % Overwrite wit...
2 months 前 | 0
已回答
chebyshevT in a standalone app
The chebyshevT function is part of Symbolic Math Toolbox. Looking at the Support for MATLAB, Simulink, and Toolboxes page for MA...
chebyshevT in a standalone app
The chebyshevT function is part of Symbolic Math Toolbox. Looking at the Support for MATLAB, Simulink, and Toolboxes page for MA...
2 months 前 | 0
| 已接受
已回答
Section folding unavailable in r2025a?
On the Home tab, click on the Settings button in the Environment section. Expand the Editor/Debugger item under MATLAB then sele...
Section folding unavailable in r2025a?
On the Home tab, click on the Settings button in the Environment section. Expand the Editor/Debugger item under MATLAB then sele...
2 months 前 | 1
| 已接受
已回答
Interp1 is not working after applying unique because of rounding off
I need to use interp1 on these values, but here interp1 is not reading them as 3.569990000000001 and 3.570000000000001. Interp1 ...
Interp1 is not working after applying unique because of rounding off
I need to use interp1 on these values, but here interp1 is not reading them as 3.569990000000001 and 3.570000000000001. Interp1 ...
2 months 前 | 1
已回答
Why does times(A,B) gives me negative values when A and B don't have any ???
Try using mustBeNonnegative instead of mustBePositive. This will detect if your calculation underflowed to 0. x = realmin must...
Why does times(A,B) gives me negative values when A and B don't have any ???
Try using mustBeNonnegative instead of mustBePositive. This will detect if your calculation underflowed to 0. x = realmin must...
3 months 前 | 2
| 已接受
已回答
A question about text string concatenation
That would work as you expected if Cruise_ID were a char vector. In that case, the concatenation would make a longer char vector...
A question about text string concatenation
That would work as you expected if Cruise_ID were a char vector. In that case, the concatenation would make a longer char vector...
3 months 前 | 2
| 已接受
已回答
termination command `kill -9 {id}` no longer works (from 2022b to 2024b)
Rather than killing the process, why not just call quit to exit MATLAB?
termination command `kill -9 {id}` no longer works (from 2022b to 2024b)
Rather than killing the process, why not just call quit to exit MATLAB?
3 months 前 | 0
已回答
How to convert a column of float or not data into double?
Are you trying to import this data from a file? If so please show us (or tell us, if you can't provide the code) exactly how the...
How to convert a column of float or not data into double?
Are you trying to import this data from a file? If so please show us (or tell us, if you can't provide the code) exactly how the...
3 months 前 | 1
