Plotting a line x=constant

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Hi,
What is a good way to plot a straight line parallel to y-axis for a particular x value?
I've used this code but the line is dotted
x=3;
y=0:0.001:0.3; %How much is long
plot(x, y, 'LineWidth', 10) % but is not large enough
  1 Comment
Ram Lakha Meena
Ram Lakha Meena on 27 Aug 2020
This is what i did and the result:
clear
clc
close all
x=3;
y=0:0.001:0.3; %How much is long
plot(x, y, 'LineWidth', 10) % but is not large enough

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Accepted Answer

Grzegorz Knor
Grzegorz Knor on 21 Sep 2011
Another option:
line([x x],[y(1) y(end)],'LineWidth',10)

More Answers (3)

Francisco Williams
Francisco Williams on 24 Aug 2020
You can use xline command

Paulo Silva
Paulo Silva on 21 Sep 2011
plot(x*ones(size(y)), y, 'LineWidth', 10)
or
plot(x*ones(1,size(y,2)), y, 'LineWidth', 10)

Svitlana Strunina
Svitlana Strunina on 29 Mar 2021
xline(3);
https://www.mathworks.com/help/matlab/ref/xline.html

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