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Answered
How do you handle 24h Simulink simulations with Simscape/Specialized Power Systems?
You use a discrete step time of 5e-6. You have a final time of 24 hours, and want to run it in "a few hours", which for the sake...
How do you handle 24h Simulink simulations with Simscape/Specialized Power Systems?
You use a discrete step time of 5e-6. You have a final time of 24 hours, and want to run it in "a few hours", which for the sake...
11 hours ago | 1
Discussion
anniversary of The Great Outage
We are nearly at the anniversary of The Great Outage, May 19 2025 to May 27 2025. At the time, many Mathworks services were down...
2 days ago | 0
Answered
What errors can be found on this script?
scatter(study_hours, exam_scores) % <-- Modify this to customize the markers You failed to customize the markers. The near-lin...
What errors can be found on this script?
scatter(study_hours, exam_scores) % <-- Modify this to customize the markers You failed to customize the markers. The near-lin...
2 days ago | 0
| accepted
Answered
can thingspeak support http (not https) I have a simple modem that cannot support SNI, TLS so need plain http
https://www.mathworks.com/help/thingspeak/thinghttp-app.html URL Enter the address of the website or the web service that you ...
can thingspeak support http (not https) I have a simple modem that cannot support SNI, TLS so need plain http
https://www.mathworks.com/help/thingspeak/thinghttp-app.html URL Enter the address of the website or the web service that you ...
9 days ago | 0
Answered
hallar la solucion de
syms X1 X2 X3 eqns = [2*X1 + 4*X2 + 6*X3 == 18 4*X1 + 5*X2 + 6*X3 == 24 3*X1 + X2 - 2*X3 == 4] sol = solve...
hallar la solucion de
syms X1 X2 X3 eqns = [2*X1 + 4*X2 + 6*X3 == 18 4*X1 + 5*X2 + 6*X3 == 24 3*X1 + X2 - 2*X3 == 4] sol = solve...
12 days ago | 0
Answered
6G toolbox installation R2021b
No. The 6G toolbox does not exist yet. https://www.mathworks.com/discovery/6g.html The 6G Exploration Library https://www.m...
6G toolbox installation R2021b
No. The 6G toolbox does not exist yet. https://www.mathworks.com/discovery/6g.html The 6G Exploration Library https://www.m...
13 days ago | 0
Answered
new date in Certificate
You probably need to retake the certification. Because Mathworks is an evolving language, you certify against a particular rel...
new date in Certificate
You probably need to retake the certification. Because Mathworks is an evolving language, you certify against a particular rel...
17 days ago | 0
Answered
How can we make the following spectral relaxation code to run?
The actual error message is Error using * Incorrect dimensions for matrix multiplication. Check that the number of columns i...
How can we make the following spectral relaxation code to run?
The actual error message is Error using * Incorrect dimensions for matrix multiplication. Check that the number of columns i...
17 days ago | 0
| accepted
Answered
How to transfer Matlab command history from version R2014b (uses history.xml in predir) to R2025b (already tried copy and paste history.xml file method)?
There is a migration tool; see https://www.mathworks.com/matlabcentral/answers/2179748-how-do-i-migrate-my-command-history-data-...
How to transfer Matlab command history from version R2014b (uses history.xml in predir) to R2025b (already tried copy and paste history.xml file method)?
There is a migration tool; see https://www.mathworks.com/matlabcentral/answers/2179748-how-do-i-migrate-my-command-history-data-...
18 days ago | 1
Answered
Only version 2026a appears available for download as a trial. I want version 2025b
Trials for previous versions need to be arranged through Mathworks Sales. Note: R2026a and later do not support Intel Mac.
Only version 2026a appears available for download as a trial. I want version 2025b
Trials for previous versions need to be arranged through Mathworks Sales. Note: R2026a and later do not support Intel Mac.
18 days ago | 0
Answered
Why is Preallocating arrays important in MATLAB, and how does it improve performance compared to dynamically growing arrays?
There are a few cases in which MATLAB semantics would potentially allow some variables to be grown in place, but much of the tim...
Why is Preallocating arrays important in MATLAB, and how does it improve performance compared to dynamically growing arrays?
There are a few cases in which MATLAB semantics would potentially allow some variables to be grown in place, but much of the tim...
22 days ago | 0
Answered
Can you get matlab to add a really small number to a big number and retain precision
p = sym(-1e17) + sqrt(sym(1e34) + sym(1e18)) vpa(p, 30) The problem with doing vpa(-1e17 + sqrt(1e34 + 1e18)) is that when you...
Can you get matlab to add a really small number to a big number and retain precision
p = sym(-1e17) + sqrt(sym(1e34) + sym(1e18)) vpa(p, 30) The problem with doing vpa(-1e17 + sqrt(1e34 + 1e18)) is that when you...
22 days ago | 2
Answered
How can I verify that the roll-off factors (0.15, 0.10, and 0.05) are correctly implemented in the dvbs2xWaveformGenerator function?
I do not have access to the Satellite Communications Toolbox, so I cannot give specific answers. There is the possibility that ...
How can I verify that the roll-off factors (0.15, 0.10, and 0.05) are correctly implemented in the dvbs2xWaveformGenerator function?
I do not have access to the Satellite Communications Toolbox, so I cannot give specific answers. There is the possibility that ...
24 days ago | 0
Answered
How can I generate a License Report?
It is possible to create a license usage report by analyzing the output of lmstat https://www.mathworks.com/help/install/ug/netw...
How can I generate a License Report?
It is possible to create a license usage report by analyzing the output of lmstat https://www.mathworks.com/help/install/ug/netw...
24 days ago | 0
Answered
Best practices for MATLAB code
There is no equivalent to the C preprocessor in MATLAB. The C pre-processor can do some ugly things, such as #ifdef __CPLUS ...
Best practices for MATLAB code
There is no equivalent to the C preprocessor in MATLAB. The C pre-processor can do some ugly things, such as #ifdef __CPLUS ...
26 days ago | 0
Answered
when i install the matlab then i chnage the lisence name shann into shanni kumar and when i compeletd the installtion process the matlab show me the line licence not match
The name used for license purposes needs to be your windows username. Your windows username probably does not have a space in it...
when i install the matlab then i chnage the lisence name shann into shanni kumar and when i compeletd the installtion process the matlab show me the line licence not match
The name used for license purposes needs to be your windows username. Your windows username probably does not have a space in it...
27 days ago | 0
Answered
How to add one extra seat for a different computer on an existing license?
You would need to purchase a second Home license. Potentially, the second Home license would be listed under the same "master ...
How to add one extra seat for a different computer on an existing license?
You would need to purchase a second Home license. Potentially, the second Home license would be listed under the same "master ...
1 month ago | 0
Answered
Home License in 2026
There is no longer any option to purchase a Perpetual Home license or a Perpetual Student license. The new annual price for Hom...
Home License in 2026
There is no longer any option to purchase a Perpetual Home license or a Perpetual Student license. The new annual price for Hom...
1 month ago | 1
Answered
Generating .NET Code for usage without Matlab Runtime
Sorry, there is no way to generate C# code at present. I have no information as to whether Mathworks is working on a C# code ge...
Generating .NET Code for usage without Matlab Runtime
Sorry, there is no way to generate C# code at present. I have no information as to whether Mathworks is working on a C# code ge...
1 month ago | 0
Answered
Looking for addon name
That is likely https://github.com/isablanca/Power-System-Analysis-Toolbox/
Looking for addon name
That is likely https://github.com/isablanca/Power-System-Analysis-Toolbox/
1 month ago | 0
| accepted
Answered
2 area bus system
Possibly https://github.com/Realife-Brahmin/PowerSystems-Analysis-Stability-WSU which includes ieee11: Kundur's 2 Area 11 bus s...
2 area bus system
Possibly https://github.com/Realife-Brahmin/PowerSystems-Analysis-Stability-WSU which includes ieee11: Kundur's 2 Area 11 bus s...
1 month ago | 0
| accepted
Answered
unrecognized date format from "dir" command for french users with july month
Instead of using the date field returned by dir(), you can use the datenum field Target = '/'; datetime([dir(Target).datenum],...
unrecognized date format from "dir" command for french users with july month
Instead of using the date field returned by dir(), you can use the datenum field Target = '/'; datetime([dir(Target).datenum],...
1 month ago | 0
Answered
how to convert table to matrix?
table2array() . Or, if the table is all numeric, you can give the table name and then {:, :} such as mytable{:,:}
how to convert table to matrix?
table2array() . Or, if the table is all numeric, you can give the table name and then {:, :} such as mytable{:,:}
1 month ago | 19
| accepted
Answered
Undefined function 'imhistc' for input arguments of type 'uint8'.
imhistc is a mex file that is installed as part of the Image Processing Toolbox. If it is not found, first experiment with re...
Undefined function 'imhistc' for input arguments of type 'uint8'.
imhistc is a mex file that is installed as part of the Image Processing Toolbox. If it is not found, first experiment with re...
1 month ago | 0
| accepted
Answered
Why is Jaaba stuck open on MATLAB online?
Follow the instructions at https://www.mathworks.com/matlabcentral/answers/520496-matlab-online-stuck-at-loading-screen#answer_4...
Why is Jaaba stuck open on MATLAB online?
Follow the instructions at https://www.mathworks.com/matlabcentral/answers/520496-matlab-online-stuck-at-loading-screen#answer_4...
1 month ago | 0
| accepted
Answered
Even though I followed Matlab instruction, I cannot update it.
R2026a Pre-release licenses expire within a small number of days, because the actual R2026a release is due to be launched within...
Even though I followed Matlab instruction, I cannot update it.
R2026a Pre-release licenses expire within a small number of days, because the actual R2026a release is due to be launched within...
2 months ago | 0
Answered
Please i need to make the color of the run code figure similar as the color of the attached figure.
There are a couple of possible ways to make the color of the figure the same as what you attached: you can draw some extra obje...
Please i need to make the color of the run code figure similar as the color of the attached figure.
There are a couple of possible ways to make the color of the figure the same as what you attached: you can draw some extra obje...
2 months ago | 0
Answered
How to download Matlab 2020b, I cannot find it on dowloads.
If all you can see at https://www.mathworks.com/downloads/ is the very latest version of MATLAB, then that typically indicates t...
How to download Matlab 2020b, I cannot find it on dowloads.
If all you can see at https://www.mathworks.com/downloads/ is the very latest version of MATLAB, then that typically indicates t...
2 months ago | 0
Answered
Absolute Encoders / BISS C
https://www.mathworks.com/help/ti-c2000/ug/biss-example.html
Absolute Encoders / BISS C
https://www.mathworks.com/help/ti-c2000/ug/biss-example.html
2 months ago | 0
