Markers enabled to highlight data

조회 수: 40 (최근 30일)
Andrea Wrona
Andrea Wrona 2020년 6월 18일
댓글: Bowen 2023년 6월 9일
Good afternoon,
I get a weird error in Simulink when trying to plot a constant inside a scope: it shows me only a circle at time=0, and not the straight horizontal line. Can anybody please tell me how to avoid this situation? I have already tried to change the plot style by changing the marker "o" into "none", but I did not succeed.
  댓글 수: 3
Wenjie Zhang
Wenjie Zhang 2020년 8월 7일
hi body,you can see this,it will help you
https://ww2.mathworks.cn/matlabcentral/answers/508963-scope-does-only-show-one-data-point#answer_418530
Bowen
Bowen 2023년 6월 9일
Thank you. The is the important website where I solve the same problem puzzling me for a long time. To be honest, I do not like such a design of MATALB2023.

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답변 (2개)

思邈 周
思邈 周 2020년 12월 10일
The correct answer from the @Fangjun Jiang:
“Can someone from the Mathworks give an explaination of this change on the Scope block? I've answered questions similar to this twice before. I think the "smartness" of the Scope block actually confused user.
In this extream simple example, in the Scope window, go to menu View, Style, you will see the "Marker" is set as "o". That is why. Usually, it is set as "none". But in this case, even if you set it as "none" and click "Apply", when you run simulation again, it will automatically go back to "o" and still show the same plot with just one dot.
It is the correct display, considering that the Scope is connected to the Constant block. But that is probabbly another lengthy discussion. If you want to show the "tradictional" view, you can change the sample time of the Constant block from "inf" to "-1", then you will see a horizontal line. You can further play with the setting on "Marker".
I think whatever the default behavior of the Scope with values of "inf" sample time is confusing users.”

Chaitanya Mallela
Chaitanya Mallela 2020년 8월 20일
Refer Constant Sample Time section in the documentation

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