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venn.py
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# coding: utf-8
from itertools import chain
from collections import Iterable
import matplotlib.pyplot as plt
import matplotlib.patches as patches
from matplotlib import colors
import math
default_colors = [
# r, g, b, a
[92, 192, 98, 0.5],
[90, 155, 212, 0.5],
[246, 236, 86, 0.6],
[241, 90, 96, 0.4],
[255, 117, 0, 0.3],
[82, 82, 190, 0.2],
]
default_colors = [
[i[0] / 255.0, i[1] / 255.0, i[2] / 255.0, i[3]]
for i in default_colors
]
def draw_ellipse(fig, ax, x, y, w, h, a, fillcolor):
e = patches.Ellipse(
xy=(x, y),
width=w,
height=h,
angle=a,
color=fillcolor)
ax.add_patch(e)
def draw_triangle(fig, ax, x1, y1, x2, y2, x3, y3, fillcolor):
xy = [
(x1, y1),
(x2, y2),
(x3, y3),
]
polygon = patches.Polygon(
xy=xy,
closed=True,
color=fillcolor)
ax.add_patch(polygon)
def draw_text(fig, ax, x, y, text, color=[0, 0, 0, 1], fontsize=14):
ax.text(
x, y, text,
horizontalalignment='center',
verticalalignment='center',
fontsize=fontsize,
color=color)
def draw_annotate(fig, ax, x, y, textx, texty, text, color=[0, 0, 0, 1], arrowcolor=[0, 0, 0, 0.3]):
plt.annotate(
text,
xy=(x, y),
xytext=(textx, texty),
arrowprops=dict(color=arrowcolor, shrink=0, width=0.5, headwidth=8),
fontsize=14,
color=color,
xycoords="data",
textcoords="data",
horizontalalignment='center',
verticalalignment='center'
)
def get_labels(data, fill=["number"]):
"""
get a dict of labels for groups in data
@type data: list[Iterable]
@rtype: dict[str, str]
input
data: data to get label for
fill: ["number"|"logic"|"percent"]
return
labels: a dict of labels for different sets
example:
In [12]: get_labels([range(10), range(5,15), range(3,8)], fill=["number"])
Out[12]:
{'001': '0',
'010': '5',
'011': '0',
'100': '3',
'101': '2',
'110': '2',
'111': '3'}
"""
N = len(data)
sets_data = [set(data[i]) for i in range(N)] # sets for separate groups
s_all = set(chain(*data)) # union of all sets
# bin(3) --> '0b11', so bin(3).split('0b')[-1] will remove "0b"
set_collections = {}
for n in range(1, 2**N):
key = bin(n).split('0b')[-1].zfill(N)
value = s_all
sets_for_intersection = [sets_data[i] for i in range(N) if key[i] == '1']
sets_for_difference = [sets_data[i] for i in range(N) if key[i] == '0']
for s in sets_for_intersection:
value = value & s
for s in sets_for_difference:
value = value - s
set_collections[key] = value
labels = {k: "" for k in set_collections}
if "logic" in fill:
for k in set_collections:
labels[k] = k + ": "
if "number" in fill:
for k in set_collections:
labels[k] += str(len(set_collections[k]))
if "percent" in fill:
data_size = len(s_all)
for k in set_collections:
labels[k] += "(%.1f%%)" % (100.0 * len(set_collections[k]) / data_size)
return labels
def venn2(labels, names=['A', 'B'], **options):
"""
plots a 2-set Venn diagram
@type labels: dict[str, str]
@type names: list[str]
@rtype: (Figure, AxesSubplot)
input
labels: a label dict where keys are identified via binary codes ('01', '10', '11'),
hence a valid set could look like: {'01': 'text 1', '10': 'text 2', '11': 'text 3'}.
unmentioned codes are considered as ''.
names: group names
more: colors, figsize, dpi, fontsize
return
pyplot Figure and AxesSubplot object
"""
colors = options.get('colors', [default_colors[i] for i in range(2)])
figsize = options.get('figsize', (9, 7))
dpi = options.get('dpi', 96)
fontsize = options.get('fontsize', 14)
fig = plt.figure(0, figsize=figsize, dpi=dpi)
ax = fig.add_subplot(111, aspect='equal')
ax.set_axis_off()
ax.set_ylim(bottom=0.0, top=0.7)
ax.set_xlim(left=0.0, right=1.0)
# body
draw_ellipse(fig, ax, 0.375, 0.3, 0.5, 0.5, 0.0, colors[0])
draw_ellipse(fig, ax, 0.625, 0.3, 0.5, 0.5, 0.0, colors[1])
draw_text(fig, ax, 0.74, 0.30, labels.get('01', ''), fontsize=fontsize)
draw_text(fig, ax, 0.26, 0.30, labels.get('10', ''), fontsize=fontsize)
draw_text(fig, ax, 0.50, 0.30, labels.get('11', ''), fontsize=fontsize)
# legend
draw_text(fig, ax, 0.20, 0.56, names[0], colors[0], fontsize=fontsize)
draw_text(fig, ax, 0.80, 0.56, names[1], colors[1], fontsize=fontsize)
leg = ax.legend(names, loc='best', fancybox=True)
leg.get_frame().set_alpha(0.5)
return fig, ax
def venn3(labels, names=['A', 'B', 'C'], **options):
"""
plots a 3-set Venn diagram
@type labels: dict[str, str]
@type names: list[str]
@rtype: (Figure, AxesSubplot)
input
labels: a label dict where keys are identified via binary codes ('001', '010', '100', ...),
hence a valid set could look like: {'001': 'text 1', '010': 'text 2', '100': 'text 3', ...}.
unmentioned codes are considered as ''.
names: group names
more: colors, figsize, dpi, fontsize
return
pyplot Figure and AxesSubplot object
"""
colors = options.get('colors', [default_colors[i] for i in range(3)])
figsize = options.get('figsize', (9, 9))
dpi = options.get('dpi', 96)
fontsize = options.get('fontsize', 14)
fig = plt.figure(0, figsize=figsize, dpi=dpi)
ax = fig.add_subplot(111, aspect='equal')
ax.set_axis_off()
ax.set_ylim(bottom=0.0, top=1.0)
ax.set_xlim(left=0.0, right=1.0)
# body
draw_ellipse(fig, ax, 0.333, 0.633, 0.5, 0.5, 0.0, colors[0])
draw_ellipse(fig, ax, 0.666, 0.633, 0.5, 0.5, 0.0, colors[1])
draw_ellipse(fig, ax, 0.500, 0.310, 0.5, 0.5, 0.0, colors[2])
draw_text(fig, ax, 0.50, 0.27, labels.get('001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.73, 0.65, labels.get('010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.61, 0.46, labels.get('011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.27, 0.65, labels.get('100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.39, 0.46, labels.get('101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.50, 0.65, labels.get('110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.50, 0.51, labels.get('111', ''), fontsize=fontsize)
# legend
draw_text(fig, ax, 0.15, 0.87, names[0], colors[0], fontsize=fontsize)
draw_text(fig, ax, 0.85, 0.87, names[1], colors[1], fontsize=fontsize)
draw_text(fig, ax, 0.50, 0.02, names[2], colors[2], fontsize=fontsize)
leg = ax.legend(names, loc='best', fancybox=True)
leg.get_frame().set_alpha(0.5)
return fig, ax
def venn4(labels, names=['A', 'B', 'C', 'D'], **options):
"""
plots a 4-set Venn diagram
@type labels: dict[str, str]
@type names: list[str]
@rtype: (Figure, AxesSubplot)
input
labels: a label dict where keys are identified via binary codes ('0001', '0010', '0100', ...),
hence a valid set could look like: {'0001': 'text 1', '0010': 'text 2', '0100': 'text 3', ...}.
unmentioned codes are considered as ''.
names: group names
more: colors, figsize, dpi, fontsize
return
pyplot Figure and AxesSubplot object
"""
colors = options.get('colors', [default_colors[i] for i in range(4)])
figsize = options.get('figsize', (12, 12))
dpi = options.get('dpi', 96)
fontsize = options.get('fontsize', 14)
fig = plt.figure(0, figsize=figsize, dpi=dpi)
ax = fig.add_subplot(111, aspect='equal')
ax.set_axis_off()
ax.set_ylim(bottom=0.0, top=1.0)
ax.set_xlim(left=0.0, right=1.0)
# body
draw_ellipse(fig, ax, 0.350, 0.400, 0.72, 0.45, 140.0, colors[0])
draw_ellipse(fig, ax, 0.450, 0.500, 0.72, 0.45, 140.0, colors[1])
draw_ellipse(fig, ax, 0.544, 0.500, 0.72, 0.45, 40.0, colors[2])
draw_ellipse(fig, ax, 0.644, 0.400, 0.72, 0.45, 40.0, colors[3])
draw_text(fig, ax, 0.85, 0.42, labels.get('0001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.68, 0.72, labels.get('0010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.77, 0.59, labels.get('0011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.32, 0.72, labels.get('0100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.71, 0.30, labels.get('0101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.50, 0.66, labels.get('0110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.65, 0.50, labels.get('0111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.14, 0.42, labels.get('1000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.50, 0.17, labels.get('1001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.29, 0.30, labels.get('1010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.39, 0.24, labels.get('1011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.23, 0.59, labels.get('1100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.61, 0.24, labels.get('1101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.35, 0.50, labels.get('1110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.50, 0.38, labels.get('1111', ''), fontsize=fontsize)
# legend
draw_text(fig, ax, 0.13, 0.18, names[0], colors[0], fontsize=fontsize)
draw_text(fig, ax, 0.18, 0.83, names[1], colors[1], fontsize=fontsize)
draw_text(fig, ax, 0.82, 0.83, names[2], colors[2], fontsize=fontsize)
draw_text(fig, ax, 0.87, 0.18, names[3], colors[3], fontsize=fontsize)
leg = ax.legend(names, loc='best', fancybox=True)
leg.get_frame().set_alpha(0.5)
return fig, ax
def venn5(labels, names=['A', 'B', 'C', 'D', 'E'], **options):
"""
plots a 5-set Venn diagram
@type labels: dict[str, str]
@type names: list[str]
@rtype: (Figure, AxesSubplot)
input
labels: a label dict where keys are identified via binary codes ('00001', '00010', '00100', ...),
hence a valid set could look like: {'00001': 'text 1', '00010': 'text 2', '00100': 'text 3', ...}.
unmentioned codes are considered as ''.
names: group names
more: colors, figsize, dpi, fontsize
return
pyplot Figure and AxesSubplot object
"""
colors = options.get('colors', [default_colors[i] for i in range(5)])
figsize = options.get('figsize', (13, 13))
dpi = options.get('dpi', 96)
fontsize = options.get('fontsize', 14)
fig = plt.figure(0, figsize=figsize, dpi=dpi)
ax = fig.add_subplot(111, aspect='equal')
ax.set_axis_off()
ax.set_ylim(bottom=0.0, top=1.0)
ax.set_xlim(left=0.0, right=1.0)
# body
draw_ellipse(fig, ax, 0.428, 0.449, 0.87, 0.50, 155.0, colors[0])
draw_ellipse(fig, ax, 0.469, 0.543, 0.87, 0.50, 82.0, colors[1])
draw_ellipse(fig, ax, 0.558, 0.523, 0.87, 0.50, 10.0, colors[2])
draw_ellipse(fig, ax, 0.578, 0.432, 0.87, 0.50, 118.0, colors[3])
draw_ellipse(fig, ax, 0.489, 0.383, 0.87, 0.50, 46.0, colors[4])
draw_text(fig, ax, 0.27, 0.11, labels.get('00001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.72, 0.11, labels.get('00010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.55, 0.13, labels.get('00011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.91, 0.58, labels.get('00100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.78, 0.64, labels.get('00101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.84, 0.41, labels.get('00110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.76, 0.55, labels.get('00111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.51, 0.90, labels.get('01000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.39, 0.15, labels.get('01001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.42, 0.78, labels.get('01010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.50, 0.15, labels.get('01011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.67, 0.76, labels.get('01100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.70, 0.71, labels.get('01101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.51, 0.74, labels.get('01110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.64, 0.67, labels.get('01111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.10, 0.61, labels.get('10000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.20, 0.31, labels.get('10001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.76, 0.25, labels.get('10010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.65, 0.23, labels.get('10011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.18, 0.50, labels.get('10100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.21, 0.37, labels.get('10101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.81, 0.37, labels.get('10110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.74, 0.40, labels.get('10111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.27, 0.70, labels.get('11000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.34, 0.25, labels.get('11001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.33, 0.72, labels.get('11010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.51, 0.22, labels.get('11011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.25, 0.58, labels.get('11100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.28, 0.39, labels.get('11101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.36, 0.66, labels.get('11110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.51, 0.47, labels.get('11111', ''), fontsize=fontsize)
# legend
draw_text(fig, ax, 0.02, 0.72, names[0], colors[0], fontsize=fontsize)
draw_text(fig, ax, 0.72, 0.94, names[1], colors[1], fontsize=fontsize)
draw_text(fig, ax, 0.97, 0.74, names[2], colors[2], fontsize=fontsize)
draw_text(fig, ax, 0.88, 0.05, names[3], colors[3], fontsize=fontsize)
draw_text(fig, ax, 0.12, 0.05, names[4], colors[4], fontsize=fontsize)
leg = ax.legend(names, loc='best', fancybox=True)
leg.get_frame().set_alpha(0.5)
return fig, ax
def venn6(labels, names=['A', 'B', 'C', 'D', 'E'], **options):
"""
plots a 6-set Venn diagram
@type labels: dict[str, str]
@type names: list[str]
@rtype: (Figure, AxesSubplot)
input
labels: a label dict where keys are identified via binary codes ('000001', '000010', '000100', ...),
hence a valid set could look like: {'000001': 'text 1', '000010': 'text 2', '000100': 'text 3', ...}.
unmentioned codes are considered as ''.
names: group names
more: colors, figsize, dpi, fontsize
return
pyplot Figure and AxesSubplot object
"""
colors = options.get('colors', [default_colors[i] for i in range(6)])
figsize = options.get('figsize', (20, 20))
dpi = options.get('dpi', 96)
fontsize = options.get('fontsize', 14)
fig = plt.figure(0, figsize=figsize, dpi=dpi)
ax = fig.add_subplot(111, aspect='equal')
ax.set_axis_off()
ax.set_ylim(bottom=0.230, top=0.845)
ax.set_xlim(left=0.173, right=0.788)
# body
draw_triangle(fig, ax, 0.637, 0.921, 0.649, 0.274, 0.188, 0.667, colors[0])
draw_triangle(fig, ax, 0.981, 0.769, 0.335, 0.191, 0.393, 0.671, colors[1])
draw_triangle(fig, ax, 0.941, 0.397, 0.292, 0.475, 0.456, 0.747, colors[2])
draw_triangle(fig, ax, 0.662, 0.119, 0.316, 0.548, 0.662, 0.700, colors[3])
draw_triangle(fig, ax, 0.309, 0.081, 0.374, 0.718, 0.681, 0.488, colors[4])
draw_triangle(fig, ax, 0.016, 0.626, 0.726, 0.687, 0.522, 0.327, colors[5])
draw_text(fig, ax, 0.212, 0.562, labels.get('000001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.430, 0.249, labels.get('000010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.356, 0.444, labels.get('000011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.609, 0.255, labels.get('000100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.323, 0.546, labels.get('000101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.513, 0.316, labels.get('000110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.523, 0.348, labels.get('000111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.747, 0.458, labels.get('001000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.325, 0.492, labels.get('001001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.670, 0.481, labels.get('001010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.359, 0.478, labels.get('001011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.653, 0.444, labels.get('001100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.344, 0.526, labels.get('001101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.653, 0.466, labels.get('001110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.363, 0.503, labels.get('001111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.750, 0.616, labels.get('010000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.682, 0.654, labels.get('010001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.402, 0.310, labels.get('010010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.392, 0.421, labels.get('010011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.653, 0.691, labels.get('010100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.651, 0.644, labels.get('010101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.490, 0.340, labels.get('010110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.468, 0.399, labels.get('010111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.692, 0.545, labels.get('011000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.666, 0.592, labels.get('011001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.665, 0.496, labels.get('011010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.374, 0.470, labels.get('011011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.653, 0.537, labels.get('011100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.652, 0.579, labels.get('011101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.653, 0.488, labels.get('011110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.389, 0.486, labels.get('011111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.553, 0.806, labels.get('100000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.313, 0.604, labels.get('100001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.388, 0.694, labels.get('100010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.375, 0.633, labels.get('100011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.605, 0.359, labels.get('100100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.334, 0.555, labels.get('100101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.582, 0.397, labels.get('100110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.542, 0.372, labels.get('100111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.468, 0.708, labels.get('101000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.355, 0.572, labels.get('101001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.420, 0.679, labels.get('101010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.375, 0.597, labels.get('101011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.641, 0.436, labels.get('101100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.348, 0.538, labels.get('101101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.635, 0.453, labels.get('101110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.370, 0.548, labels.get('101111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.594, 0.689, labels.get('110000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.579, 0.670, labels.get('110001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.398, 0.670, labels.get('110010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.395, 0.653, labels.get('110011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.633, 0.682, labels.get('110100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.616, 0.656, labels.get('110101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.587, 0.427, labels.get('110110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.526, 0.415, labels.get('110111', ''), fontsize=fontsize)
draw_text(fig, ax, 0.495, 0.677, labels.get('111000', ''), fontsize=fontsize)
draw_text(fig, ax, 0.505, 0.648, labels.get('111001', ''), fontsize=fontsize)
draw_text(fig, ax, 0.428, 0.663, labels.get('111010', ''), fontsize=fontsize)
draw_text(fig, ax, 0.430, 0.631, labels.get('111011', ''), fontsize=fontsize)
draw_text(fig, ax, 0.639, 0.524, labels.get('111100', ''), fontsize=fontsize)
draw_text(fig, ax, 0.591, 0.604, labels.get('111101', ''), fontsize=fontsize)
draw_text(fig, ax, 0.622, 0.477, labels.get('111110', ''), fontsize=fontsize)
draw_text(fig, ax, 0.501, 0.523, labels.get('111111', ''), fontsize=fontsize)
# legend
draw_text(fig, ax, 0.674, 0.824, names[0], colors[0], fontsize=fontsize)
draw_text(fig, ax, 0.747, 0.751, names[1], colors[1], fontsize=fontsize)
draw_text(fig, ax, 0.739, 0.396, names[2], colors[2], fontsize=fontsize)
draw_text(fig, ax, 0.700, 0.247, names[3], colors[3], fontsize=fontsize)
draw_text(fig, ax, 0.291, 0.255, names[4], colors[4], fontsize=fontsize)
draw_text(fig, ax, 0.203, 0.484, names[5], colors[5], fontsize=fontsize)
leg = ax.legend(names, loc='best', fancybox=True)
leg.get_frame().set_alpha(0.5)
return fig, ax