Identifying values in R Plot

Question

I have been trying to identify extreme values in a R ggplot2.

Is there any way to have a plot where besides the point (or instead of it) representing the values, it also shows the index? Or any other thing that allows you to quickly identify it?

The closest thing I found was with the identify() function, but it didn't work very well for me.

Any recommendations?

I'll give a basic ggplot plot:

df = data.frame(x = runif(10,0,1), y = runif(10,0,1))
ggplot(df, aes(x,y)) +
  geom_point(col="red") + theme_bw()

score 2 · Accepted Answer · edited Feb 22 '21 at 21:17

2

Update:

I've been trying new things. I finally got exactly what I wanted.

df = data.frame(x = runif(10,0,1), y = runif(10,0,1))
ggplot(df, aes(x,y, label = rownames(df))) +
  geom_point() + geom_text() + theme_bw()

Output

Now I can easily identify the values that I want. Hope it helps other people that are new to ggplot.

If anyone knows ways to improve it, feel free to do so.

edited Feb 22 '21 at 21:17

Ben Bolker

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answered Feb 22 '21 at 20:08

Bileobio

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if you use `geom_text(vjust=2)` (or omit `geom_point()`) it will be easier to read the values. – Ben Bolker Feb 22 '21 at 21:18

score 1 · Answer 2 · answered Feb 16 '21 at 01:25

1

I'd suggest installing the plotly package and then running:

plotly::ggplotly(.Last.value)

answered Feb 16 '21 at 01:25

Jon Spring

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Very helpful! Thank you. – Bileobio Feb 18 '21 at 00:23

Identifying values in R Plot

2 Answers2