add line in a plot

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Ancalagon8
Ancalagon8 2020-7-9
编辑： Ancalagon8 2025-1-6
Hello I have a figure with datetime in x- axis. I want to plot a vertical line but through code where is the exact point but i receive an error.
Any ideas how to do this?

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回答（1 个）

Steven Lord
Steven Lord 2020-7-9
First, plot some duration data.
y = (0:59);
x = duration(0, y, 1);
plot(x, y);
Now add a line at a specific value. Note that since I plotted with duration data on the X axis, when creating an xline I must create it at a duration value. If I tried something like xline(15) that wouldn't work.
xline(duration(0, 15, 0))
  2 个评论
Ancalagon8
Ancalagon8 2020-7-9
"Undefined function or variable 'xline'."
madhan ravi
madhan ravi 2020-7-9
It was introduced in 2018b so if you’re using a prior release it won’t work.

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