Legend Key Parameters in `theme()`¶

New parameters in theme() to customize the legend key:

In [1]:

from IPython.display import Image

display(Image('images/theme_legend_scheme.png'))

In [2]:

import pandas as pd

from lets_plot import *

In [3]:

LetsPlot.setup_html()

In [4]:

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

Out[4]:

	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

In [5]:

p = ggplot(mpg, aes(x='hwy')) + \
    geom_dotplot(aes(fill='class'), color='pen') + \
    theme(legend_background=element_rect(size=0.5))

p

Out[5]:

Add background underneath legend keys:

In [6]:

p1 = p + theme(legend_key=element_rect(fill='#efedf5', color='#756bb1'))
p1

Out[6]:

Change size of legend keys:

In [7]:

p1 + theme(legend_key_size=30)

Out[7]:

In [8]:

p2 = p1 + theme(legend_key_width=80, legend_key_height=20)
p2

Out[8]:

Add spacing between legend keys:

In [9]:

p2 + theme(legend_key_spacing_y=10)

Out[9]:

Legend Key Parameters in theme()¶