Default format for exponents changed from e-notation to power of 10.
from lets_plot import *
LetsPlot.setup_html()
data = dict(
name = ["electron", "muon", "tau"],
mass = [9.1e-28, 1.9e-25, 3.2e-24],
)
ggplot(data) + \
geom_point(aes(x="mass"), y=0, tooltips=layer_tooltips().line("@name").line("@|@{mass}g")) + \
theme(axis_title_y='blank', axis_text_y='blank') + \
ggtitle("Masses of charged leptons in grams")