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Fangjun Jiang


Last seen: Today |  Active since 2011

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What is a model? Professional Interests: Model-Based Development

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MATLAB
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Answered
运行s-function Output argument "sys" (and possibly others) not assigned a value in the execution with "ctrl>mdlOutputs" function.
Probably a typo at the last line of this code below. Should be 'sys', not 'sym'. Also need to add a line 'end' to finish this fu...

1 month ago | 0

Answered
my for loop stop after the first valid number has been found how do i fix this
Use "result_1", no need to create "answer_1" numbers=1:100; result_1=[]; for i =1:numel(numbers); num=numbers(i); i...

3 months ago | 0

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Answered
hi i started the matlab onramp course and im stuck on this further practice question i wld appreciate if anyone cld help me or even give an hint
density=10:10:100 index=[1 3 6] SelectedDensityValue=density(index)

3 months ago | 0

Answered
Questions regarding Unit Delay block initial condition and model recompilation
Use Simulink.Parameter Specify its storage class as "ImportFromFile" and specify a HeaderFile name. When the code is generated...

3 months ago | 0

Answered
Why am I getting a computed maximum size is not bounded error in a MATLAB Function block in Simulink R2021a even when using assert?
The Simulink diagnostic is probably not designed to read the assert() function. The proper way for this is to define those data...

3 months ago | 0

Answered
How do I use the unit per mille in Simulink parameters and ports?
It is "m" for "milli". "mille" means "a thousand", that is "k" for "kilo".

3 months ago | 0

Answered
switching of svpwm is not working . it is not showing staircase mode in scope
To convert radians to degree, the Gain should be 180/pi. You had it as pi/180. That seems to be the cause. The logic seems corr...

3 months ago | 0

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Answered
how to write a program combininb name and age?
No Switch statement is needed. This practice is to get the input and put it in the right format. help input help sprintf

3 months ago | 1

Answered
Is it possible to access the blocks inside the model under test from the test harness in custom criteria script of simulink test?
I think the testing harness model is using the Model block to reference the model under test, so you can't access the block dire...

3 months ago | 0

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Answered
Why do I receive "Error in port widths or dimensions"?
Simulink uses forward propagation and back propagation to determine the size of the signal. There is a conflict in this propagat...

3 months ago | 0

Answered
How to use global variable in MATLAB discrete-event system block (not MATLAB Function Blocks)?
Use Global Variables in System Objects https://www.mathworks.com/help/simulink/ug/use-global-variables-in-system-objects.html#b...

4 months ago | 0

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Answered
How to save a MATLAB Simulink based simulaton with scopes data intact for future viewing?
Simulation Manager https://www.mathworks.com/help/simulink/slref/simulationmanager.html

4 months ago | 0

Answered
How to save in Simulink output/results to different files
SDI datastore and tall array https://www.mathworks.com/help/simulink/slref/matlab.io.datastore.sdidatastore.html

4 months ago | 1

Answered
I have some calcualted variable in simulink which will create an array is there a block to work this out?
https://www.mathworks.com/help/simulink/slref/selector.html

4 months ago | 0

Answered
How can I save the text in the model workspace variable description?
mw=get_param(bdroot,'ModelWorkspace'); a=mw.getVariable('Param'); >> s=get(a,'Description') s = 'abc'

4 months ago | 0

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Answered
get Simulink block libinfo in find_system
'ReferenceBlock' is a block property. 'Library' is not. You are probably looking for 'LinkStatus'. model='f14'; open_system(mo...

4 months ago | 0

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Answered
How to adjust font size in Matlab editor
Fonts, Custom, Editor

4 months ago | 0

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Answered
Output single Timetable from Simulink when some logged signals are not doubles
I did an example in R2022b. It didn't have problem logging and extracting different data types in a single table. Your problem m...

4 months ago | 0

Answered
How can i edit my code which works on r2014b version at work but not on my personal r2024a version?
No matching files named 'XXXXXX' were found. This is the error. It should give you a clue. Put a break point at line 239 where...

4 months ago | 0

Answered
Simulink Mask won't display parameter values
Variable 'label' is inside the function. It is not visible in the mask workspace. disp(label), not disp('label') Use the follo...

4 months ago | 0

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Answered
How to programmatically change the command window text size?
https://www.mathworks.com/help/matlab/matlab_external/access-and-modify-settings.html

4 months ago | 0

Answered
GUIDE code from pre 2015 need to access the button press function and "programatically press the button" from a different m file
In the .m file created for your GUIDE application, there is a function called SaveSpectrumPlotButton_Callback() defined. Current...

4 months ago | 0

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Answered
I encountered error though the input data to INS block is exactly 3-column
The input needs to be N-by-3 real-valued matrix. You need to use the "Vector Concatenate" block, instead of the "Bus Creator" b...

4 months ago | 0

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Answered
Hi. Manual variant sink.
>> get_param(gcb,'sw') ans = '1' >> get_param(gcb,'sw') ans = '0' >> get_param(gcb, 'LabelModeActiveChoice') ans ...

4 months ago | 0

Answered
Is it posibble to import a simulink model into Unreal Engine simulation ?
https://www.mathworks.com/help/sl3d/create-3d-simulation-in-unreal-engine-environment.html

4 months ago | 0

Answered
about test point during code generation
https://www.mathworks.com/help/ecoder/ref/ignoretestpointsignals.html If it is a test point, code generation makes sure to allo...

4 months ago | 0

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Answered
Alternatives to 'For Each subsystem' that are compatible with global data outside the subsystem
The number of input and output will be different with configurations "N" In that case, the value of "N" is determined by the pa...

5 months ago | 0

Answered
How to pick all elements from a set that satisfy a certain condition?
A=[-5,-4,-3,-2,-1,0,1,2,3,4,5]; index=(A+A')==1; [I,J]=find(index); A([I,J])

5 months ago | 0

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Answered
Debug Simulink MATLAB funciton block inside for each subsystem
Yes. I can confirm this behavior in R2022b. When setting the loop number N to be 1, you will see the normal debugging behavior...

5 months ago | 0

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Answered
How to initialize instance of class in Simulink Global Workspace?
If involving object/class, you might want to use MATLAB System block https://www.mathworks.com/help/simulink/slref/matlabsystem...

5 months ago | 0

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