Horizontal line in plot up to a graph

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Mepe
Mepe 2021-2-26
评论： Mepe 2021-2-26
How can I generate a horizontal line starting at x = 0 up to a graph (see figure, red line)? The x, y coordinates are of course available for the graph.

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回答（1 个）

KSSV
KSSV 2021-2-26
If you have the xlimits (x0,x1) and the y-value..the required equations is y = k.
x = 1:10 ;
k = 3 ;
y = k*ones(*Size(x)) ;
plot(x,y)
Also have a look on line.
  2 个评论
Mepe
Mepe 2021-2-26
I don't understand the code. How would you elegantly solve this with the line command? In such a way that it only runs to the graph?
Thanks!
Mepe
Mepe 2021-2-26
The value x1 should be freely chosen. From the point of intersection with the function (x, y) the line should run horizontally to x = 0.

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