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Fangjun Jiang


Last seen: Today Active since 2011

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

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Answered
Testing a cell array if it is a string
a={'abc', 123, 'xyz',0}; b=cellfun(@isstr,a)

alrededor de 13 horas ago | 0

Answered
How to select consecutive rows at regular intervals?
index1=[repmat(false,20,1);repmat(true,30,1)]; index2=repmat(index1,20,1); A=rand(1000,3); B=A(index2,:)

6 días ago | 0

Answered
Simulink fixed-step size protected variable name
If you set the fixed step size to be a particular value, you can get the value using the following command get_param('ModelName...

7 días ago | 0

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Answered
repeat an array (a signal) over a specific period
new_phi=repmat(phi,1,200)

7 días ago | 0

| accepted

Answered
MATLAB certification/verification/validation
Not for MATLAB, but for certain Simulink products. https://www.mathworks.com/products/do-178.html#qualifying-tools https://www...

7 días ago | 0

Answered
Update subsystem's Block parameters for all the subsytems in a model.
h=find_system('ModelName','FindAll','on','BlockType','SubSystem') set(h,'TreatAsAtomicUnit','On') You might need to refine you...

14 días ago | 0

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Answered
Turn off Content Preview Enabled when creating a subsystem in simulink
When you add the Subsystem block, it is empty (no contents). I guess maybe due to that, 'ContentPreviewEnabled' can't be set as ...

15 días ago | 0

Answered
Changing plot colors directly in .fig files
Use findobj() to find the line, set the color to be [Red Green Blue] >> b=findobj(a,'type','line') b = Line with properties:...

17 días ago | 1

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Answered
License info missing in license function - How to see which licenses I have checked out?
"ver" returns the toolboxes "installed" on your computer. You could run Info=license('inuse'). Check each Info(1), Info(2) to s...

17 días ago | 0

Answered
comment out many SubSystems in my Model in Simulink using for loop.
num2str()

17 días ago | 1

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Answered
Error while saving Simulink model
run "dbstop if error" in MATLAB Command Window first and then save, see if you can get any lead where the error occured.

19 días ago | 0

Answered
Creating a logic vector out of 2D matrix
M(i,i) == M(i,0) should be M(i,2) == 0 When you have this type of error on a very simple script, put a break point and run th...

23 días ago | 0

Answered
How do I map a model simulink version obtatained with Simulink.MDLInfo('mymodel') to a MATLAB version (e.g. R2021b)
It looks like Simulink.MDLInfo() will give you 'ReleaseName'. I am running this in R2018b on an example model 'f14' and an old m...

24 días ago | 0

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Answered
Erase this character ''←''
double('←') strrep({'←Matlab←←'},char(8592),'') strrep({'←Matlab←←'},'←','')

25 días ago | 0

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Answered
Name of Bus at input or output port of a block
"Inbus" and "Inbus2" here are the tag names of the "From" block. They have nothing to do with the bus name, of curse except that...

27 días ago | 0

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Answered
Open a masked subsystem (look under mask) in command line
open_system(blk,'force') looks under the mask of a masked block or subsystem. It opens the dialog box of the block under the mas...

29 días ago | 0

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Answered
How to code a time delay specified by a value saved in a parameter structure in a Matlab block?
In the MATLAB Function block editor, click the "edit data" button, then add parameter. Define the "myParams" in base workspace a...

alrededor de 1 mes ago | 0

Answered
Create a Simulink model using command Lines
add_line()

alrededor de 1 mes ago | 1

Answered
Creating a Simulink model using command Lines
The property name for Capacitance is 'c' set(gcbh,'c','1e-5')

alrededor de 1 mes ago | 1

Answered
Matlab signal propagation error
Here is the root cause. It is due to the difference between R2020b and earlier versions. You have to figure out how to deal with...

alrededor de 1 mes ago | 0

Answered
Where is Switch (Relay) in Simulink?
https://www.mathworks.com/help/physmod/sps/ref/spdtrelay.html?s_tid=doc_ta https://www.mathworks.com/help/simulink/slref/manual...

alrededor de 1 mes ago | 0

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Answered
How do you quickly format plots from the scope in Simulink?
Instead of using Scope, save the signal data using "To Workspace" or "To File" block. Write a M-script function to plot. see pl...

alrededor de 1 mes ago | 0

Answered
MATLAB Puts One space between %'s (Comment)
I think that is the exact reason to add "%" and a space for "Ctrl+R", to avoid making "%%" by pressing "Ctrl+R" twice. Adding "...

alrededor de 1 mes ago | 0

Answered
issue with using a variable for path name
cd(Path). avoid using 'Path' as variable name as path() is a function.

alrededor de 1 mes ago | 0

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Answered
How to get current URL from web browser using matlab?
If you are willing to do copy&paste, you can do this in MATLAB txt=clipboard('paste')

alrededor de 1 mes ago | 0

Answered
Libraries equivalent for referenced subsystems
The library option in find_system() 'FollowLinks', 'on' or 'off' Also 'LookInsideSubsystemReference', 'on' or 'off' See doc ...

alrededor de 1 mes ago | 0

Answered
Road Roughness in simulink
It seems normal to me. The acceleration has positives and nagatives, thus the speed shows rising and falling, but because all th...

alrededor de 1 mes ago | 0

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Answered
How to change port font color in Matlab Function Block in Simulink
It looks like block mask. Select the block, press Ctrl+M, check the "icon drawing commands".

alrededor de 1 mes ago | 0

Answered
cannot extract data from figure with multiple lines
The other two "curves" are created using stairs(). use findobj(fig,'Type','Stair') to find those. fig = openfig('traj.fig'); >...

alrededor de 1 mes ago | 0

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