Theme Legend Scheme#
from lets_plot import *
LetsPlot.setup_html()
color_margin = "#b3cde3"
color_key = "#decbe4"
color_label = "#fddaec"
color_plot = "#ccebc5"
def legend_element(elem_bnd):
return geom_rect(xmin=elem_bnd[0], xmax=elem_bnd[2],
ymin=elem_bnd[1], ymax=elem_bnd[3],
fill=color_label, color=color_label, size=0) + \
geom_rect(xmin=elem_bnd[0], xmax=elem_bnd[0] + 1.5,
ymin=elem_bnd[1], ymax=elem_bnd[3],
fill=color_key, color=color_key, size=0) + \
geom_text(x=elem_bnd[0] + 0.1, y=(elem_bnd[3] + elem_bnd[1]) / 2,
label="key", vjust=0.5, hjust=0, size=10) + \
geom_text(x=elem_bnd[0] + 1.6, y=(elem_bnd[3] + elem_bnd[1]) / 2,
label="label", vjust=0.5, hjust=0, size=10)
def legend(x, y, w=10, h=8):
xmin = x
xmax = x + w
ymin = y
ymax = ymin + h
margin = 1
space = 1
title_h = 1.5
elem_w = ((w - margin * 2) - space) / 2
elem_h = ((h - margin * 2)) / 2 - space - 0.2
# xmin, ymin, xmax, ymax
inner_bnd = [xmin + margin, ymin + margin,
xmax - margin, ymax - margin]
elem11 = [inner_bnd[0], inner_bnd[3] - title_h - elem_h,
inner_bnd[0] + elem_w, inner_bnd[3] - title_h]
elem12 = [inner_bnd[0] + elem_w + space, inner_bnd[3] - title_h - elem_h,
inner_bnd[2], inner_bnd[3] - title_h]
elem21 = [elem11[0], inner_bnd[1], elem11[2], inner_bnd[1] + elem_h]
elem22 = [elem12[0], inner_bnd[1], inner_bnd[2], elem21[3]]
# plot elements
legend_background = geom_rect(xmin=xmin, xmax=xmax,
ymin=ymin, ymax=ymax,
fill=color_margin, size=1.5)
legend_elements_box = geom_rect(xmin=inner_bnd[0], xmax=inner_bnd[2],
ymin=inner_bnd[1], ymax=inner_bnd[3],
fill='white', size=0)
title = geom_text(label="Title",
x=inner_bnd[0] + 0.1, y=inner_bnd[3] - title_h / 2,
vjust=0.5, hjust=0, size=10)
row1 = legend_element(elem11) + legend_element(elem12)
row2 = legend_element(elem21) + legend_element(elem22)
return legend_background + legend_elements_box + title + row1 + row2
def annotation_line(x, y, xend=None, yend=None, type_arrow='both', linetype='solid'):
xend = xend if xend is not None else x
yend = yend if yend is not None else y
with_arrow = None
if type_arrow is not None:
with_arrow = arrow(length=5, ends=type_arrow, type='closed')
return geom_segment(x=x, y=y, xend=xend, yend=yend, linetype=linetype, arrow=with_arrow)
plotting_area = geom_rect(xmin=0, xmax=3, ymin=-1, ymax=19,
fill=color_plot, color=color_margin,
size=14, alpha=0.5) + \
geom_text(label='plotting area', x=2, y=10,
hjust=0.5, vjust=0, angle=90, size=11, color='grey') + \
geom_text(label='plot_inset', x=2.8, y=10,
hjust=0.5, vjust=1, angle=90, family='Courier')
legend_box_spacing = geom_text(label='legend_box_spacing', x=4.2, y=10.5,
hjust=0, vjust=0, angle=90, family='Courier') + \
annotation_line(x=3.3, y=10.2, xend=5)
legend_boxes = legend(x=5, y=10, w=15, h=8.5) + \
legend(x=5, y=0, w=12, h=8.5) + \
geom_text(label='legend_justification=[0,1]', x=23, y=19,
hjust=1, vjust=0, family='Courier') + \
annotation_line(x=-1, y=18.5, xend=22, type_arrow=None, linetype='dashed')
legend_annotations = (geom_text(label='legend_margin', x=15, y=18, hjust=0, family='Courier')) + \
(geom_text(label='legend_spacing_y', x=6, y=9.2, hjust=0, family='Courier')
+ annotation_line(x=5.4, y=8.5, yend=10)) + \
(geom_text(label='legend_key_spacing_x', x=12.8, y=9.2, hjust=0, family='Courier')
+ annotation_line(x=12, y=11.5, xend=13)
+ annotation_line(x=12.5, y=9.2, yend=11.5, type_arrow=None)) + \
(geom_text(label='legend_key_spacing_y', x=14, y=13.5, hjust=0, family='Courier')
+ annotation_line(x=13.8, y=13.1, yend=13.9)) + \
(geom_text(label='legend_box_just=\'left\' (legend_box=\'vertical\')',
x=5.3, y=-1, hjust=0, family='Courier')
+ annotation_line(x=5, y=-2, yend=20, type_arrow=None, linetype='dashed')) + \
(geom_text(label='legend_key_width', x=12, y=7, hjust=0, family='Courier')
+ annotation_line(x=11.5, y=6.5, xend=13)) + \
(geom_text(label='legend_key_height', x=10.5, y=3.5, hjust=0, family='Courier')
+ annotation_line(x=11.2, y=4, yend=5.9))
ggplot() + \
plotting_area + \
legend_box_spacing + \
legend_boxes + \
legend_annotations + \
coord_cartesian(xlim=(1.2, 23)) + \
theme_void() + \
ggsize(1000, 800)