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Why is the line in my figure not showing up?

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Shay Ang
Shay Ang 2018-12-21
评论： Shay Ang 2018-12-21
I have multiple plots in same axes so i want to have 2 separate lines connecting the plots respectively. However my line is not showing eventhough my x and 0 marker shows up. What is the problem in my linespec?
for i=1:20;
%TR1 is my output 1 and TY is my output 2 %
plot(i,TR1(i),'-rx',i,TY(i),'-bo','LineWidth',2)
if i == 1
hold on
end
end
hold off
Here is the figure i get
P/S: my matlab version is R2018a

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采纳的回答

Mark Sherstan
Mark Sherstan 2018-12-21
Create the plot after your loop (or dont use a loop at all) as so:
... end
figure(1))
x = 1:length(TR1);
plot(x,TR1,'-rx',x,TY,'-bo','LineWidth',2)

更多回答（1 个）

Walter Roberson
Walter Roberson 2018-12-21
Each call to plot produces new primitive line objects. Different primitive line objects do not join together .
You are only plotting one point at a time so nothing you plot will join with anything else .
No loop.
plot(1:20, TR1(1:20), .......)

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