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# Fangjun Jiang

##### Last seen: Today
2,520 total contributions since 2011

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

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How do I set an initial value for an input in a MATLAB Function Block in Simulink?
The initial value of "U" is determined by the 1/z block. Set the initial value there.

38 minutes ago | 0

How can I change the initial battery charge of the example microgrid in Matlab?
Right click, Mask, Look under Mask Find the Constant block showing "AH*0.2*3600". "0.2" is the determing value. Change it to be...

3 hours ago | 1

How to do a matrix from vectors
A = [single([time1 time2]) Hs_buoy Tm_buoy Dm_buoy]

4 hours ago | 0

join cell arrays together
x=repmat({'the_output'},5,1); y=mat2cell((1:5)',ones(5,1),1); z=cellfun(@(a,b) [a,num2str(b)],x,y,'UniformOutput',false)

23 hours ago | 1

Simulink : Get handle of a Matlab-Function block, inside Matlab-Function itself
I would think so, just try handle=get_param(Block,'handle') where "Block" is the full path of the MATLAB function block in your ...

1 day ago | 0

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How to build x and y coordinates using a For loop
maybe it should be y=zeros(12,2) x(i,:)=[x1(i),x2(i)]; y(i,:)=[y1(i),y2(i)];

1 day ago | 0

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Simulink object... ...was changed during simulation
I had a user who had problem matching this although Simulink (earlier version) didn't give this exact error message. There is a...

1 day ago | 0

If statement not executing
Most likely a "floating point data equal comparison" issue. see (1/3)==(1-2/3). They are not equal if you run it in MATLAB.

2 days ago | 0

robotics system toolbox example issue
Do you have the toolbox? What do you get from "ver robotics"

3 days ago | 0

OK ... simple question! In newer versions of Simulink, I'm finding that I can't emphasize a line grouping (vectors, whatever) then move them with either the mouse of arrows.
Include at least one block in your group (selection), cut or copy, then paste, you can still move around the whole group.

4 days ago | 0

Matlab borrow products for simulink code generation
Go through your tasks when there is an internet connection, then run license('inuse') to find out what are needed. You may also ...

4 days ago | 0

getting data from structure
temp=[S.speed]; out=temp(1:3:end) % or get all three speeds Speed=reshape([S.speed],3,[])

7 days ago | 0

using the data from struct
If you can't change the other program, Out=YourOtherProgram(), where "Out" is a data like "ans" in your picture, then you can u...

7 days ago | 0

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SIL using model reference
I thought the document was clear. To deploy the generated code as part of a larger application that uses the referenced model, ...

7 days ago | 0

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A is a matrix of size 32*32.I want to subtract elements of each 4*4 block of A from their respective 4*4 means
A=rand(32); out = blockproc(A,[4 4],@(x)mean(x.data(:))); temp=repmat({ones(4,1)},8,1); temp=blkdiag(temp{:}); Result=A-te...

9 days ago | 0

How to prevent stateflow from opening the system?
Maybe, it is dependent on how you program it? The following example doesn't show the model until the last line. bdclose all; n...

9 days ago | 0

What kind of source block is this?
double click to open it. The title of the dialog window shall tell the block type.

11 days ago | 0

How to Model For loop as Simulink Model?
Use "For Iterator Subsystem"

13 days ago | 0

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str2num results
ss() happen to be a function. You could run b=ss alone;

16 days ago | 0

Why wont this run? "Array indices must be positive integers or logical values."
Most likely typo f = (1/(2*(pi)))*(L*C*(((R1^2)*C-L)/((R2^2)*C-L)))^(1/2)

16 days ago | 0

How do I define and use a standard range written by variable
N=10; % provide a reasonable number based on the range of input data n=1:N; LowBound=690*n; HighBound=1200*n; InputData=[...

17 days ago | 0

The error has nothing to do with the script. According to the error message, your simulation step size is fixed, 1 second. Howev...

18 days ago | 0

Calculating that power supply won't burn my laptop
Modern power supplier/charger are all "smart" devices. The power/volt/max current numbers are not derived directly from the simp...

22 days ago | 0

Cannot get points on a plot to show
You are plotting one point at a time, use plot(N,error(N),'+') or at the end, plot(1:10,error)

23 days ago | 0

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Assign a number to a letter in excel
X1={'A','B','C'}'; y=cell2mat(X1)-64

23 days ago | 0

23 days ago | 0

Help with restricting input
Suprisingly, just run your specification and it works in MATLAB number=input('Enter a whole number between 1 and 100:') while ...

23 days ago | 0

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Index Exceeds the number of array elements (993268)
If you have an array with 10 elements but you are trying to access the 11th element, you got this error. Just step through your ...

23 days ago | 0

| accepted