Draw a line on a 2D plot at a particular x and y values
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I'd like to draw a line at a particular x (and corresponding y) value for a plot that looks like this:
x=linspace(0,4)
y=x.^2
plot(x,y)
If I use the data cursor, it doesn't let me place it on a particular value (in my case where x=3), so I'd like it to do that and show me the x and corresponding y coordinates somewhere on the graph. Ideally, I'd like to have a dashed line protruding from the x and y axes to this point on the graph.
Any help would be appreciated.
Thanks
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采纳的回答
George Papazafeiropoulos
2014-6-2
x=linspace(0,4);
y=x.^2;
plot(x,y);
line([3;3],[0;9],'linestyle','--');
line([0;3],[9;9],'linestyle','--');
4 个评论
ARVIND KUMAR SINGH
2020-7-6
x=linspace(0,4);
y=x.^2;
plot(x,y);
line([3;3],[0;9],'linestyle','--','Color','red');
line([0;3],[9;9],'linestyle','--','Color','green');
Pulkit Rustagi
2020-9-25
编辑:Pulkit Rustagi
2020-9-25
Is it possible to label the said dashed line? is there a label field for line function?
Its not specificly mentioned in the documentation
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