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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)

ungefär 12 timmar 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 dagar 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 dagar ago | 0

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

7 dagar ago | 0

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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 dagar 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...

13 dagar 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 dagar 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 dagar 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 dagar ago | 0

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

17 dagar 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 dagar 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 dagar 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 dagar ago | 0

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

25 dagar 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 dagar 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 dagar 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...

ungefär en månad ago | 0

Answered
Create a Simulink model using command Lines
add_line()

ungefär en månad ago | 1

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

ungefär en månad 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...

ungefär en månad 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...

ungefär en månad 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...

ungefär en månad 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 "...

ungefär en månad ago | 0

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

ungefär en månad 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')

ungefär en månad 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 ...

ungefär en månad 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...

ungefär en månad 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".

ungefär en månad 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'); >...

ungefär en månad ago | 0

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