Drawing X and Y axis on 2D plot
显示 更早的评论
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?
采纳的回答
Walter Roberson
2012-6-12
xL = xlim;
yL = ylim;
line([0 0], yL); %x-axis
line(xL, [0 0]); %y-axis
10 个评论
David Polcari
2012-6-12
Kevin Holst
2012-6-12
see the documentation under "line"
"Examples
This example uses the line function to add a shadow to plotted data. First, plot some data and save the line's handle:
t = 0:pi/20:2*pi;
hline1 = plot(t,sin(t),'k');
Next, add a shadow by offsetting the x-coordinates. Make the shadow line light gray and wider than the default LineWidth:
hline2 = line(t+.06,sin(t),'LineWidth',4,'Color',[.8 .8 .8]);"
Sean de Wolski
2012-6-12
xL = xlim;
yL = ylim;
line(xL, [0 0],'color','k','linewidth',10) %x-axis
line([0 0], yL,'color','k','linewidth',10) %y-axis
And for more info
>>doc line
David Polcari
2012-6-12
AnnArborObserver
2016-9-1
I believe the comments about %x-axis and %y-axis are reversed and should be:
xL = xlim;
yL = ylim;
line([0 0], yL); %y-axis
line(xL, [0 0]); %x-axis
surya chandra gulipalli
2019-5-12
great. Thank you
Emon Baroi
2019-9-26
thank you very much ...it can help me a lot
Cody Roman
2021-2-18
Very helpful
Zhao Lu
2022-8-10
Thanks so much
Sidharth A Narayanan
2023-3-22
I think you interchanged the x-axis and y-axis ...
更多回答（3 个）
Brian Russell
2021-4-30
25 个投票
Why does everyone give such complicated answers to this question? The answer is xline(0) and yline(0).
4 个评论
Elie Marouani
2021-5-18
编辑：Elie Marouani
2021-5-18
This is exactly what i needed here, thank you
Sajib Biswas Shuvo
2021-6-21
This answer should be at the top. Thanks btw.
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
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.
Steven Lord
2016-9-1
5 个投票
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
2020-1-28
0 个投票
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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