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Fangjun Jiang


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3.162 total contributions since 2011

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Answered
Different (Simulink) simulation results when called from App designer than a matlab script (.m)
This happened several times now and it might be related. Give a return variable when you call sim() such as Result=sim(...). Ot...

3 días ago | 0

Answered
How to use external function(m file) in a Simulink?
Interpreted MATLAB Function

5 días ago | 0

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Answered
Set certain value of signal when it goes above threshold.
Use the Relational Operator block to compare the signal against the threshhold value. The output is a true or false signal. Use ...

9 días ago | 0

Answered
One of the Mask Parameters getting reset in Entire Model while saving Custom Library.
Things like this usually gets complicated when it is put in a library. Without the actual model, I could guess: If you are set...

9 días ago | 0

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Answered
Deleting every n rows in matrix
A=1:100 A=A(1:15:end)

9 días ago | 0

Answered
Calling out array from workspace in simulink
You have "Var=1:5" in MATLAB base workspace. In Simulink, use a Constant block, specify its value as "Var", or "Var(1)", "Var(5)...

10 días ago | 0

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Answered
How to create constant(!) input-dependent matrices with a Matlab function block without that variable-size stuff
MATLAB Function block can deal with variable size. It is just a lot of annoynance like you suggested. You need to declare the ma...

10 días ago | 0

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How to achieve identical timing of two side by side annotations
What you can do is this. I think it can improve the timing. h1=annotation(..., 'visible','off'): h2=annotation(..., 'visible',...

13 días ago | 0

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Architectural documentation of simulink model - UML
System Composer is supposed to do this. It uses SysML.

13 días ago | 0

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Answered
How can I strip duplicates?
If you want remove duplicates only based on values in the first column Do not want the returned values be sorted then you nee...

13 días ago | 0

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How can I swap two elements in each row of a matrix without loops?
This is lengthy but does the job. %% flag=logical([0 0 1 1]); % pick two elements in each row p=perms(flag); % all the possib...

14 días ago | 0

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Answered
Mysterious tangent line on my plots
Your code has problem. If you have "clear all" at the begining to clear the variables in the memory, then your code has error. ...

14 días ago | 0

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Answered
Rearrangement of vector elements
something like this? a=(1:95)' b=reshape(a,19,[]) c=b(1:11,:) d=c(:)

14 días ago | 1

Answered
How to create a string array with long strings that continue to a new line?
s=["aa"+ ... "aa", "bb"+ ... "bb"] s = 1×2 string array "aaaa" "bbbb"

15 días ago | 2

Answered
where is function block parameters:fcn that expression ex) sin(u(1))+cos(u(1))
I heard it was being phased out. I don't remember which version. You probably can search it in release note. It will be not ava...

15 días ago | 0

Answered
How to make state-space model for an array input in Simulink?
You should not duplicate the State Space block. The size of A, B, C and D should all match properly to the number of states X, t...

18 días ago | 0

Answered
Why Matlab and Simulink have different Plot for the same modulo function?
The step size is more important than solver in this case. Reducing the step size to be 1 or 0.5 and making it fixed would resolv...

22 días ago | 1

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Answered
Why do i receive this error when lunching simulink ?
The \slprj folder can't be created under "C:\Program Files\MATLAB". Move your models and work in other folder such as \MyDocumen...

23 días ago | 0

Answered
How to put variable name in Y-limits of a scope in Simulink programmatically from Matlab
Seems true but also, it works this way. >> YY=5 YY = 5 >> set(gcbh,'ActiveDisplayYMaximum','YY') >> get(gcbh,'ActiveDi...

23 días ago | 0

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Answered
zpk function is missing
I believe zpk() requires Control System Toolbox. Check to see if you have it ver control

24 días ago | 0

Answered
storing matrix elements in a single variable as string
Use for-loop if want to split A = [3 25 100 5 20 100]; >> B=sprintf("%d#%d@%d\n",A(:)) B = "3#25@100 5#20@100 ...

25 días ago | 0

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Answered
finding the index of an array in cell array
arr ={[1,2,3],[4,45,6]}; >> index=find(cellfun(@(x) all(x==[1 2 3]),arr)) index = 1

25 días ago | 0

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Answered
How to add the "Plottools" icon to plot control ribbon.
On the figure, click menu "View", check "Figure toolbar" or "Plot Edit Toolbar" or others.

27 días ago | 0

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Answered
How do i fix return error in matlab?
This is a warning, not an error. If the code "return" here (which means exiting the function), the varialbe "rho" may never be ...

28 días ago | 0

Answered
Convert from R2019b to R2019a
Open the model, click menu "File" then "Export model to"

28 días ago | 0

Answered
Unable to use curly braces to index into cell
Where is your variable "cell" defined? cell() is a function. Use some other name.

28 días ago | 0

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Open figure in new window instead of next to editor using figure object
%% close all; f=figure('Name', 'FFT-Test','position',[150,0,1000,650]) f1=subplot(4,1,1,'Parent',f) plot(1:10) f4=subpl...

29 días ago | 0

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Answered
Continue, step in , step out are disabled after error in program
run "dbstop if error" and then run your porgram and debug run "dbclear if error" to go back to normal

29 días ago | 0

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Answered
Summing two binary vectors
%% a = [1 0 1]; b = [1 1 0]; s=dec2bin(bin2dec(num2str(a))+bin2dec(num2str(b))) out=str2num(s(:)) out = 1 0...

29 días ago | 0

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Answered
where to place the "From" block in this simulink model
These are warnings not errors. These warnings are usually fine. It means thoese two connections are created but not used. Take...

30 días ago | 1

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