Community Profile # Fangjun Jiang

Last seen: Today 2011 以来アクティブ

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

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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

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...

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

18日 前 | 0

Multiple plots not working on the simulink spring mass model

19日 前 | 0

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"

20日 前 | 0

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?...

29日 前 | 0

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...

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)

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

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...

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

Unable to do Modeling simulink for MAB and JMAAB

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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...

Modify the storage class in the data dictionary programmatically

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

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 ...

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provide Input port data during simulation

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?

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

How to access Simulink Model callbacks like PreLoadFcn, InitFcn, StopFcn from matlab command window?

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...

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

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

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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 ...

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ヶ月 前 | 1

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

2ヶ月 前 | 0

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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...

2ヶ月 前 | 0

theoretical framework of support for S-Functions