Legend Title¶

You can now also specify a legend title via functions guide_legend() and guide_colorbar().

Earlier, legend titles could only be specified via parameters of labs() and scale_xxx() functions.

import pandas as pd
from lets_plot import *

LetsPlot.setup_html()

mpg = pd.read_csv ("https://raw.githubusercontent.com/JetBrains/lets-plot-docs/master/data/mpg.csv")
mpg.head(3)

# Legend title

p = ggplot(mpg) + geom_point(aes('displ', 'hwy', color='cty', shape=as_discrete('cyl')), size=4) 
p + guides(shape=guide_legend('Cylinders', ncol=2), \
    color=guide_colorbar('City mileage'))

	Unnamed: 0	manufacturer	model	displ	year	cyl	trans	drv	cty	hwy	fl	class
0	1	audi	a4	1.8	1999	4	auto(l5)	f	18	29	p	compact
1	2	audi	a4	1.8	1999	4	manual(m5)	f	21	29	p	compact
2	3	audi	a4	2.0	2008	4	manual(m6)	f	20	31	p	compact