# How to plot multiple vertical lines at specific points on x axis?

조회 수: 45(최근 30일)
Heya :) 10 Mar 2020
댓글: Heya :) 11 Mar 2020
I want to plot 0.8 at 0, 0.1 at 0.9 and 0.06 at -1.3. Here is what I am trying but I am onling getting a single line.
close all; clear all; clc;
x = -1.5:0.1:1.5;
y = zeros(1,31);
p1=plot([-1.3 1.3],[0 0.06]);
p2=plot([0.9 0.9],[0 0.1]);
p3=plot([0 0],[0 0.8]);
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Heya :) 11 Mar 2020
Thanks.

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### 채택된 답변

Ameer Hamza 10 Mar 2020
편집: Ameer Hamza 10 Mar 2020
You need to hold the axes to retain all plots
clc;
x = -1.5:0.1:1.5;
y = zeros(1,31);
ax = axes();
hold(ax);
p1=plot([-1.3 -1.3],[0 0.06],'r');
p2=plot([0.9 0.9],[0 0.1],'r');
p3=plot([0 0],[0 0.8],'r');

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### 추가 답변(1개)

Jakob B. Nielsen 10 Mar 2020
By default, matlab replaces plots on an axes instead of adding. However, if you set hold on, it will add instead of replacing, like so:
close all; clear all; clc;
x = -1.5:0.1:1.5;
y = zeros(1,31);
p1=plot([-1.3 1.3],[0 0.06]);
hold on %the key!
p2=plot([0.9 0.9],[0 0.1]);
p3=plot([0 0],[0 0.8]);
##### 댓글 수: 1표시숨기기 없음
Heya :) 10 Mar 2020
Thanks a lot.

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