CODEWITHSUNDEEP
rggplot2
Thomas
Thomas

Reputation: 1

Why is my AB Line in the GGPlot Package not visible?

Maybe it is the most stupid question and it worked a million times for me, but my Ab line is just not visible in the graph. What am I doing wrong?

My code

plot =ggplot(data=NULL, aes(x= data$ï..Year, y= loggdp))+
  geom_line(col="blue")+
  geom_abline( slope=0.01994632, intercept=11.96591, col="red" )

And this is the graph I get

And this is the graph I get

Upvotes: 0

Views: 234

Answers (2)

saypeas
saypeas

Reputation: 19

This is because your x-axis plots a time-series variable, so having a slope doesn't make sense (i.e., what is a 1 unit change in a time-series variable?). To resolve this, you can create a dummy variable with values 1, 2, ..., n and plot geom_abline() against that.

Upvotes: -2

Valeri Voev
Valeri Voev

Reputation: 2242

Maybe because it's outside of the visible area. For x=2000 (year 2000), the slope and intercept you have passed result (roughly) in a value of 11.96 + 2000*0.02 = 51.96 which is not in the y-axis range in this plot.

Upvotes: 1

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