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Fangjun Jiang


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2.512 total contributions since 2011

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Answered
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.

etwa 9 Stunden ago | 0

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

ein Tag ago | 0

Answered
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.

2 Tage ago | 0

Answered
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 ...

2 Tage ago | 0

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

5 Tage ago | 0

Answered
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...

5 Tage ago | 0

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Answered
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, ...

5 Tage ago | 0

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Answered
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...

7 Tage ago | 0

Answered
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...

7 Tage ago | 0

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

9 Tage ago | 0

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

11 Tage ago | 0

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

14 Tage ago | 0

Answered
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)

14 Tage ago | 0

Answered
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=[...

15 Tage ago | 0

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

16 Tage ago | 0

Answered
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...

20 Tage ago | 0

Answered
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)

21 Tage ago | 0

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

21 Tage ago | 0

Answered
create menu with input
x=5; xx=string(1:x); menu('choose',xx(:))

21 Tage ago | 0

Answered
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 ...

21 Tage ago | 0

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Answered
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 ...

21 Tage ago | 0

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Answered
how can I compute distances:
Run the code and then run "license inuse". Only MATLAB is needed.

23 Tage ago | 0

Answered
connecting simulink with matlab
results=sim('mymodel')

23 Tage ago | 0

Answered
I want to generate a time vector
datetime([0,0,0,6,30,0]):minutes(5.12):datetime([0,0,0,15,0,0])

26 Tage ago | 0

Answered
How do I programmatically set the parameters of a Simulink-PS Converter?
Click one such block in your model and run "get(gcbh)" in Command Window to learn about its properties and values. You could do...

26 Tage ago | 1

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Answered
Drawing Rectangle/Lines with data
rectangle('Position',[0 0.15 0.012 0.012]) axis([0 0.02 0 0.2])

28 Tage ago | 0

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Answered
Mysterious "Operands to the || and && operators must be convertible to logical scalar values." error
this line if ~isempty(infMessage) && strmatch('optimlib:optimfcnchk',infMessage)

29 Tage ago | 0

Answered
How can I iteratively create blocks in simulink/simscape and populate them with variables?
What you need are functions like add_block(), add_line(), set_param() Follow examples in this section of the document "Programm...

etwa ein Monat ago | 1

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Answered
How to check for common elements among multiple arrays ? Number of arrays are more than 100 and sizes vary for each array
Use a loop Com=intersect(out{1,1},out{1,2}); for k=3:size(out,2) Com=intersect(Com,out(1,k)); if isempty(Com) break; end ...

etwa ein Monat ago | 0

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Answered
Compiled application does not write to diary log file
I think you are right. The cause is that there is no Command Window in your compiled app. I would suggest writing to a specific...

etwa ein Monat ago | 0

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