Make an interactive plot which will allow you to draw a continuous line with 3 segments

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nty huy
nty huy 2019-10-7
回答： Rik 2019-10-7
figure; hold on
xlim([0 1])
ylim([0 1])
plot(rand(1),rand(1),'o')
for i = 1 : 3
[x1 y1] = ginput( 1 );
plot( x1, y1, '+')
this is what i have but it only gives me dots not lines

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回答（1 个）

Rik
Rik 2019-10-7
You're only supplying single points to the plot function. If you want a line, you should first gather all the points and then call the plot function once.
Alternatively you can create a line object with plot and edit the XData and YData properties inside your loop.

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