geom_vline() not inheriting data within mean() function

[Timothy Lau]

Hi all,

I'm back with another NOOB question.

Is there a way to get

mean()

to use the data available in

geom_vline()

?

e.g.,

ggplot(data = women, mapping = aes(x = height, y = weight)) + geom_point() + geom_vline(xintercept = mean(height))

won't work but:

ggplot(data = women, mapping = aes(x = height, y = weight)) + geom_point() + geom_vline(xintercept = mean(women$height))

will.

Best,

Timothy

[Timothy Lau]

This is the same if you use dplyr:

women %>%
    ggplot(mapping = aes(x = height, y = weight)) + geom_point() + geom_vline(xintercept = summarize(mean(height)))

[san mohan]

Use aes:    

ggplot(data = women, mapping = aes(x = height, y = weight)) + geom_point() + geom_vline( aes(xintercept = mean(height)))