can't plot using user-defined function block.
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vishnu kannan
il 21 Feb 2019
Commentato: Fangjun Jiang
il 1 Apr 2019
I have a Matlab code to plot a graph. but when I used the same code in Simulink as a user-defined function, I am getting a lot of parellel lines instead of the desired graph in the scope block. does anyone know how to fix this?
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madhan ravi
il 21 Feb 2019
Modificato: madhan ravi
il 21 Feb 2019
share your model with your user defined function
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Fangjun Jiang
il 29 Mar 2019
Modificato: Fangjun Jiang
il 29 Mar 2019
Keep in mind that this MATLAB Function block is executed at every simulation step you run. Your funciton ouputs 201 values at every step and these values are the same from step to step. That is why your scope shows 201 straight lines.
If you want to plot sin(x). One way to do it is to add a Simulink "Clock" block and connect its output to "u". Inside your function, simply specify it as y=sin(u).
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Fangjun Jiang
il 1 Apr 2019
Just remember that in Simulink, there is a "time" element. Everything goes along the simulated "time" once you press the "Run" button.
For the sake of plotting sin(x) in Simulink without time, you could use XY scope.
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