CODEWITHSUNDEEP
rgraph
Sharl
Sharl

Reputation: 175

Add vertical lines to a graph

I'm wanting to add vertical dotted/dashed on top of my time series graph at even intervals.

Would I put an extra command in the abline arguments or is there another way?

Upvotes: 2

Views: 1679

Answers (2)

Maksim Gayduk
Maksim Gayduk

Reputation: 1082

You can supply vector arguments for v parameter in abline() to plot multiple lines. lty parameter lets you specify line type and also can be a vector. Quick example:

x=1:16
y=2*x+rnorm(16)
plot(x,y,type='b')
abline(v=.3+1:16,lty=rep(c(3,4),times = 8))

enter image description here

Upvotes: 4

zx8754
zx8754

Reputation: 56219

Use grid:

nx, ny - number of cells of the grid in x and y direction. When NULL, as per default, the grid aligns with the tick marks on the corresponding default axis (i.e., tickmarks as computed by axTicks). When NA, no grid lines are drawn in the corresponding direction.

Example:

plot(1:5)
grid(nx = NULL, ny = NA)

enter image description here

Upvotes: 4

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