CODEWITHSUNDEEP
rplot
David_grx
David_grx

Reputation: 28

Plot in R: connecting a point to the axis

Let's suppose I have a simple plot:

plot(0.3, 0.3, lwd=7)

I want to draw two lines connecting the (0.3, 0.3) point with the X and Y axis. abline is not useful here, as it goes over the point. I would like to apply the same solution when I have 6-7 points.

Upvotes: 0

Views: 1604

Answers (1)

Cath
Cath

Reputation: 24074

You can use the segments function:

Let's say the coordinates of your points are stored in vectors x and y, you can do:

plot(x, y, lwd=7)
segments(x0=x, y0=0, x1=x, y1=y) # segments from x axis to points
segments(x0=0, y0=y, x1=x, y1=y) # segments from y axis to points

Example with your point

x <- y <- 0.3
plot(x, y, lwd=7)
segments(x, 0, x, y)
segments(0, y, x, y)

enter image description here

Upvotes: 1

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