Drawing X and Y axis on 2D plot
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David Polcari
on 12 Jun 2012
Commented: Sidharth A Narayanan
on 22 Mar 2023
Hi everyone,
I have been searching for an easy way to draw the x and y axis on a plot but cannot seem to do it. For example, if I have a plot that has range [-2 10] for x and [-200 400] for y, I would like to be able to draw a line along x = 0 and y = 0. I have looked at certain functions such as axescenter but this draws the axes in the exact center so it does not work for me. The style is great but I can't get it along the axes. Anyone have any ideas?
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Accepted Answer
Walter Roberson
on 12 Jun 2012
xL = xlim;
yL = ylim;
line([0 0], yL); %x-axis
line(xL, [0 0]); %y-axis
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More Answers (3)
Brian Russell
on 30 Apr 2021
Why does everyone give such complicated answers to this question? The answer is xline(0) and yline(0).
4 Comments
Brian Russell
on 21 Jun 2021
Thanks, Sajib, but I don't know how to move it to the top. I think an administrator has to do that. I think that in an earlier version of MATLAB, the answer at the top was the correct one, but the answer I gave must be a new feature.
Alex Henderson
on 23 Feb 2023
"Why does everyone give such complicated answers to this question?"
Probably because these functions only appeared in R2018b. Still, useful to know they're there now.
Steven Lord
on 1 Sep 2016
As of release R2015b you can set the axes XAxisLocation and YAxisLocation properties to 'origin' to get the axes lines to cross at the origin.
Kajeen Hassan
on 28 Jan 2020
A parametric equation to plot the function x= 1.5 sin(5t), y= 1.5 cos(3t) , plot the function for 0<=t<=2* pi. Format the plot such that the both axes will range from -2 to 2.
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