Drawing X and Y axis on 2D plot

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David Polcari
David Polcari 2012-6-12
评论： Sidharth A Narayanan 2023-3-22
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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采纳的回答

Walter Roberson
Walter Roberson 2012-6-12
xL = xlim;
yL = ylim;
line([0 0], yL); %x-axis
line(xL, [0 0]); %y-axis
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Sidharth A Narayanan
Sidharth A Narayanan 2023-3-22
I think you interchanged the x-axis and y-axis ...

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更多回答（3 个）

Brian Russell
Brian Russell 2021-4-30
Why does everyone give such complicated answers to this question? The answer is xline(0) and yline(0).
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Brian Russell
Brian Russell 2021-6-21
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
Alex Henderson 2023-2-23
"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.

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Steven Lord
Steven Lord 2016-9-1
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
Kajeen Hassan 2020-1-28
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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