Fangjun Jiang
What is a model?
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Contribute at least one answer each month for 36 consecutive months
Awarded to Fangjun Jiang on 04 Mar 2020
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Content Feed
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 days ago | 1
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 days ago | 0
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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 days ago | 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"
21 days ago | 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?...
1 month ago | 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...
1 month ago | 0
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)
1 month ago | 1
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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...
1 month ago | 0
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Unable to do Modeling simulink for MAB and JMAAB
Model Advisor, by products, Simulink, modeling standards, MAB It requires Simulink Check toolbox
2 months ago | 1
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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...
2 months ago | 1
Modify the storage class in the data dictionary programmatically
https://www.mathworks.com/help/simulink/ug/store-data-in-dictionary-programmatically.html
2 months ago | 0
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
2 months ago | 0
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 ...
2 months ago | 0
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provide Input port data during simulation
https://www.mathworks.com/help/simulink/ug/signal-loading-techniques.html#bu110x_-1
2 months ago | 0
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?
2 months ago | 0
How to delete a node from DOM object?
use delete() and then write the xDoc to an XML file.
2 months ago | 0
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')
2 months ago | 0
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...
2 months ago | 0
How to loop through structure with words?
fn=fieldnames(reflectance.nhy1); for k=1:length(fn) reflectance.nhy1.(fn{k}) end
2 months ago | 0
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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.
2 months ago | 0
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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 ...
2 months ago | 0
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 months ago | 1
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Repeat a time based signal in Simulink (not using *.m script) / during Start of simulation based on number of repetitions
Repeating Sequence block
2 months ago | 0
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How can i have a loop in every step time in Simulink?
Use For Iterator Subsystem
2 months ago | 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...
3 months ago | 0
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 months ago | 0
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 months ago | 0
