I’m using ggplot and gganimate to create an animation of time series data. Specifically, I’m using geom_dl() with the method “last.points” to display the data at the evolving end of the time series plot. I can’t figure out how to set the precision of the data label to always be 3 digits after the decimal point, in other words to not truncate when the last digit is a zero. Can anyone help me with this? Thank you!
basic advice; is explicitly determine what your labels should be and make a specific variable for that; you can use helpful tools like scales::comma to dictate precision.
library(babynames) library(tidyverse) library(gganimate) library(directlabels) # Keep only 3 names don <- babynames %>% filter(name %in% c("Ashley")) %>% filter(sex=="F") |> mutate(faken = n/123, mylabel=scales::comma(faken,accuracy=0.001)) # Plot don %>% ggplot( aes(x=year, y=faken, group=name, color=name, label=mylabel)) + geom_line() + geom_point() + scale_color_discrete() + ggtitle("Popularity of American names in the previous 30 years") + ylab("Number of babies born dividided by 123 :) ") + geom_dl(method = "last.points") + transition_reveal(year)
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