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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
How can I create a set of N diagnal matrices range from diag(1, 1, ... , 1) to diag(-1, -1, ... , -1) for testing purposes?
a=(dec2bin(15:-1:0)-48)*2-1; z=zeros(4,4,16); for k=1:16 z(:,:,k)=diag(a(k,:)); end

2 giorni ago | 1

Answered
Creating a pulse for thermal noise
clc,clear Hz = 10; Amp = 10; x = -10:0.01:10; % a pulse function f = @(xi,a,b) a*rectpuls(xi,b)-174; % plot to plot(x,f...

2 giorni ago | 0

| accepted

Answered
How to convert 32x32x2x20000 into 20000x1 cell array?
mat2cell() ?

20 giorni ago | 0

Answered
Multiple plots not working on the simulink spring mass model
This one again? https://www.mathworks.com/matlabcentral/answers/646918-my-simulink-model-seems-to-not-receiving-proper-variable...

20 giorni ago | 0

Answered
Insert degree symbol in axis title.
title('9^oE') text(0.5,0.5,'9^oE') xticklabels({'0^oE','1^oE'}) doc title search for "superscript"

21 giorni ago | 0

Answered
Data type work vector name must less than 31 characters long
Assume you are using base workspace as data source, could run this in Command Window and inspect the "data type" property value?...

circa un mese ago | 0

Answered
Creating a vector from a set of coordinates
You mean like this? There is really no need to do this. Please explain the need. x = [10.1, 5.4, 7.3]; y = [2.3, 7.4, 8.8]; i...

circa un mese ago | 0

Answered
Replace loop with more efficient procedure to make it faster
Would this give you a clue? t1=1:3; t2=(1:4)'; flag=(t1==t2)

circa un mese ago | 1

| accepted

Answered
Can I save all the command history of a running script?
diary()?

circa un mese ago | 0

Answered
MATLAB path linked to last user account for designated computer license installed on Windows 10 device
There is no problem with the installation. No one should modify the build-in pathdef.m. Instead, everyone should use a short-c...

circa un mese ago | 0

| accepted

Answered
How can I use or call .exe file in my normal matlab script ?
doc system

circa un mese ago | 0

Answered
Unable to do Modeling simulink for MAB and JMAAB
Model Advisor, by products, Simulink, modeling standards, MAB It requires Simulink Check toolbox

circa 2 mesi ago | 1

| accepted

Answered
How to make the value in Data Store Memory global
The example is here. https://www.mathworks.com/help/simulink/ug/using-global-data-with-the-matlab-function-block.html Most like...

circa 2 mesi ago | 1

Answered
Modify the storage class in the data dictionary programmatically
https://www.mathworks.com/help/simulink/ug/store-data-in-dictionary-programmatically.html

circa 2 mesi ago | 0

Answered
How to programmaticaly set storage class (2020a) in Data Store Memory ?
if "DSM_Block" is a block handle, you can use get/set if "DSM_Block" is a block path, use set_param/get_param

circa 2 mesi ago | 0

Answered
Error:Brace indexing is not supported for variables of this type.
Run "dbstop if error" in MATLAB Command Window first and then run your optimization. Hopefully you will be able to see the line ...

circa 2 mesi ago | 0

| accepted

Answered
provide Input port data during simulation
https://www.mathworks.com/help/simulink/ug/signal-loading-techniques.html#bu110x_-1

circa 2 mesi ago | 0

Answered
How to vary Gain in Simulink dependent on input's amplitude and phase during runtime ?
Use the Product block. The Gain block is an operation of multiplication, right?

circa 2 mesi ago | 0

Answered
How to delete a node from DOM object?
use delete() and then write the xDoc to an XML file.

circa 2 mesi ago | 0

Answered
How to access Simulink Model callbacks like PreLoadFcn, InitFcn, StopFcn from matlab command window?
Model='f14'; open_system(Model) get_param(Model,'PreLoadFcn'); set_param(Model,'PreLoadFcn','YourFunctionName')

circa 2 mesi ago | 0

Answered
Neglecting difference between two values if it is very small so that value1= value2
To compare element by element, abs(C) < Tolerance To compare the two vectors as a whole, all(abs(C) < Tolerance) or use isme...

circa 2 mesi ago | 0

Answered
How to loop through structure with words?
fn=fieldnames(reflectance.nhy1); for k=1:length(fn) reflectance.nhy1.(fn{k}) end

circa 2 mesi ago | 0

| accepted

Answered
write two inputs to interpreted MATLAB block
Specify as "mod1(u(1),u(2))". Look at the Help of the block.

2 mesi ago | 0

| accepted

Answered
Why is the look-up table in Simulink must faster than the interp3 function in Matlab script?
Might it be that interp3() is a M-script function, not a built-in (or written in C) function? Try to specify all the optional ...

2 mesi ago | 0

Answered
What does the Following mean in Simulink
That is the Index Vector block. "Ldq" is a vector. The above math is: Out1=In1*Ldq(2)/Ldq(1)

2 mesi ago | 1

| accepted

Answered
How can i have a loop in every step time in Simulink?
Use For Iterator Subsystem

2 mesi ago | 0

| accepted

Answered
Insufficient number of outputs from right hand side of equal sign to satisfy assignment
nonlcon() is a defined function so fun=@nonlcon should be enough. It might be easier if the function has only one return variabl...

3 mesi ago | 0

Answered
theoretical framework of support for S-Functions
S-Function is used broadly. doc: web(fullfile(docroot, 'simulink/slref/sfunction.html')) example: open_system('sfundemos')...

3 mesi ago | 0

Answered
error in repeating sequence
It's better to provide the error message. I assume the error is about the time data that you provied. There are duplicated val...

3 mesi ago | 0

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