Create a flashing circle on a plot

2019 9 25
1 个回答
回答已采纳
更新时间：2019 10 28
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0 个投票

I would like to create a flashing circle on a graph.
Any information to go about doing this?

4 个评论
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Adam Danz
Adam Danz 2019-10-2
@Norman Vyne, you just removed all comments and the question itself. Is that how you thank volunteers in this forum of taking time out of their day to help you?
Matt J
Matt J 2019-10-16
The orginal question was (paraphrased), "How do I put a blinking circle on a plot".
Rena Berman
Rena Berman 2019-10-28
(Answers Dev) Restored edit

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 采纳的回答

Matt J
Matt J 2019-9-25

1 个投票

Something like this is a possibility:
plot(1:5);
hcirc=drawcircle;
while 1
hcirc.Visible='on';
pause(0.2);
hcirc.Visible='off';
pause(0.2);
end

8 个评论
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Norman Vyne
Norman Vyne 2019-10-2
hcirc=drawcircle;
The code above is undefined
Matt J
Matt J 2019-10-2
Since you Accepted the answer, I assume you figured it out?
Norman Vyne
Norman Vyne 2019-10-2
Actually I am not entirely sure why an error pops up.
Matt J
Matt J 2019-10-2
编辑：Matt J 2019-10-2
The optimal thing would be to upgrade to a version of Matlab which provides drawcircle. If you can't upgrade, you can make your own with patch,
function h=drawcircle(center,radius)
t=0:0.1:360;
x=radius*cosd(t)+center(1);
y=radius*sind(t)+center(2);
h=patch(x,y,'red');
end
Norman Vyne
Norman Vyne 2019-10-2
Not enough input arguments in line 4.
Matt J
Matt J 2019-10-2
You should provide whatever arguments you have omitted in line 4.
Adam Danz
Adam Danz 2019-10-2
编辑：Adam Danz 2019-10-2
Did you enter a "center" containing 2 values and a radius? It's difficult to help you when we don't have any information about what might be causing the problem. What's line 4? What inputs did you provide?
Norman Vyne
Norman Vyne 2019-10-2
I inputted the exact code above and clicked run, then I got an error stating that there is not enough input information in the "x=" part of the function.

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