describe
combine
transform!
stack
unstack
@combine
groupby
data
mapping
visual
draw
pmap()
using CairoMakie CairoMakie.activate!()
dline01 = DataFrame( x = 1:5, y = [11, 13, 18, 15, 14])
lines(dline01[:, :x], dline01[:, :y])
本书仍在修改中!