Fangjun Jiang

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3.195 total contributions since 2011

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

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Answered
How to solve a system of ODE in Simulink?
If the model has already been developed in MATLAB, you could use the MATLAB Function block

4 Tage ago | 0

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Join two sprintf into one and show it on static field
The second set(handles.text3, 'string',...) will over-write the first one. You need to combine the string and run set() once. ...

4 Tage ago | 0

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How can I divide plot between different scope windows in a scope block?
You have to specify 2 input ports, Mux three and feed into port 1, Mux the other three and feed into port 2.

5 Tage ago | 0

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Add missing numbers between elements in an array
%% Var1= [1 1 2 4 5 7 7 7 8 10 11 13 14 14 17 17 17 17 18 20]; Var2= [0.5 0.3 0.1 0.6 0.2 0.4 0.8 0.9 0.3 0.2 0.1 0.4 0.8 0.7 ...

6 Tage ago | 0

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Question

Is there a way to "Save" a link to a MATLAB Answer?
I saw a question. I know the answer because I remember answering a similar one before and it was accepted. But the answer is le...

6 Tage ago | 0 answers | 2

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answers

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extract all points from curves
x= [1,2,3,4,5,6,7,8,9,10] y= [1,2,3,4,5,6,7,8,9,10] in=[1.2,2.3,3.5] out=interp1(x,y,in)

6 Tage ago | 0

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Answered
How to run Simulation for certain amount of time
Specify the start time and stop time either directly through numerical value, or through variables and then set the value for th...

6 Tage ago | 1

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How can I reset the time reference in a triggered subsystem in Simulink?
This turns out to be harder that it seems. Branch and connect the trigger signal to the external reset port of a resetable Int...

7 Tage ago | 0

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When using the 'set_param' function, how do I ensure that I format the parameter value properly when the parameter value is a 1xn array?
how about this a=1;b=2;c=3 mat2str([a,b,c]) ans = '[1 2 3]'

11 Tage ago | 0

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Answered
Read specific value from XML-file
The short answer is to use xmlread(). I've done it before. The actual code depends on the schema. You may also try xml2struct()...

11 Tage ago | 0

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Matlab zoom window behavior in recent years
That is true but I think there is a benefit. It allows you to do x-only or y-only zoom easily. Regarding zoom outside of the li...

12 Tage ago | 0

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Start/Stopp in one Button
For fun, one-liner uibutton('Text','Start','ButtonPushedFcn','set(gcbo,''text'',setdiff(["Start","Stop"],get(gcbo,''text'')))')...

12 Tage ago | 0

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Log simulink (variable step) data with with one sample time!
You can always specify the sample time of the data logging (ToWorkspace block or signal logging). Keep in mind though that this ...

13 Tage ago | 1

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Answered
Access Data in to APP DESIGNER from Simulink 'To Workspace' block.
Use set_param() to set 'SimulationMode' and then still run simout = sim("AppDesignSetup.slx") so it will force the log of si...

13 Tage ago | 0

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How to replace one subsystem with other ..
replace_block() see examples in doc

14 Tage ago | 0

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How do I evaluate string user input with switch statement?
input('This is a prompt [y/n]','s') to input a string. Otherwise, it is for numerical.

14 Tage ago | 0

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From workspace block error: Time values must be a real vector.
If you are using timeseries, make sure its time data is valid. For example Var=timeseries; Var.Time=[0;1]; Var.Data=[1;100] ...

17 Tage ago | 0

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how to zoom in
axis()

17 Tage ago | 0

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i want to obtain a vector that each element is subtract from the previous one
diff()

17 Tage ago | 1

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Answered
Disable Drag and Drop
Search "how to disable drag and drop in windows" and see the steps. I assume the same risk exists in other apps if it happens to...

18 Tage ago | 0

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Automate the response to command prompt in matlab
There is a more secure way to do this such as using PuTTY PLINK.But if you don't mind storing and exposing your password, you co...

19 Tage ago | 0

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Is there a way of getting the "LoggingName" and "Source Port" of all the Logging Selected Signals directly in Matlab?
After a simulation, your signal logging data is saved as, e.g. logsout Run logsout.getElementNames and other API to get the inf...

19 Tage ago | 0

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Vector to matrix using assignment - Simulink
Your output is a 2x4 matrix. Using Assignment block, you could either Provide a scalar value in U, assign multiple elements of ...

19 Tage ago | 0

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Option to flip up-down a Simulink block not available in 2020a
You can show block name on top or bottom but there was never a up-down flip. If you want to change the position of the port, cha...

20 Tage ago | 0

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Is there any function in Matlab that can serve as "VLOOKUP" of Excel?
[~,index]=ismember(final1,aux2(:,1)) newData=aux2(index,:)

20 Tage ago | 1

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Answered
Demux signal from Transform sensor (simscape multibody)
Try "Demux" or "Bus Selector" block.

20 Tage ago | 0

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How can I use two PID controllers in Simulink?
Your output y seems to be 2x1, but if your current model runs, then your control variable u is 1x1. You can't have two PID contr...

21 Tage ago | 0

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Passing values from Matlab to Simulink
Start a new model, drag a Constant block and Display block. Connect them, specify the Constant value as T and simulate.

21 Tage ago | 0

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PID controller without using Simulink
"doc pid" or look at the examples in "doc connect"

21 Tage ago | 0

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Make Combination form 3 kind of variable and each variable have its own value
Start with this [x,y,z]=meshgrid(1:4,1:4,1:4); data=[x(:),y(:),z(:)]

21 Tage ago | 0

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