repytex/notes_tools/tools/plottings.py

79 lines
2.3 KiB
Python

#!/usr/bin/env python
# encoding: utf-8
import numpy as np
import matplotlib.pyplot as plt
from matplotlib.path import Path
from matplotlib.spines import Spine
from matplotlib.projections.polar import PolarAxes
from matplotlib.projections import register_projection
plt.style.use('ggplot')
def _radar_factory(num_vars):
theta = 2*np.pi * np.linspace(0, 1-1./num_vars, num_vars)
theta += np.pi/2
def unit_poly_verts(theta):
x0, y0, r = [0.5] * 3
verts = [(r*np.cos(t) + x0, r*np.sin(t) + y0) for t in theta]
return verts
class RadarAxes(PolarAxes):
name = 'radar'
RESOLUTION = 1
def fill(self, *args, **kwargs):
closed = kwargs.pop('closed', True)
return super(RadarAxes, self).fill(closed=closed, *args, **kwargs)
def plot(self, *args, **kwargs):
lines = super(RadarAxes, self).plot(*args, **kwargs)
for line in lines:
self._close_line(line)
def _close_line(self, line):
x, y = line.get_data()
# FIXME: markers at x[0], y[0] get doubled-up
if x[0] != x[-1]:
x = np.concatenate((x, [x[0]]))
y = np.concatenate((y, [y[0]]))
line.set_data(x, y)
def set_varlabels(self, labels):
self.set_thetagrids(theta * 180/np.pi, labels)
def _gen_axes_patch(self):
verts = unit_poly_verts(theta)
return plt.Polygon(verts, closed=True, edgecolor='k')
def _gen_axes_spines(self):
spine_type = 'circle'
verts = unit_poly_verts(theta)
verts.append(verts[0])
path = Path(verts)
spine = Spine(self, spine_type, path)
spine.set_transform(self.transAxes)
return {'polar': spine}
register_projection(RadarAxes)
return theta
def radar_graph(labels = [], values = [], optimum = []):
N = len(labels)
theta = _radar_factory(N)
max_val = max(max(optimum), max(values))
fig = plt.figure(figsize=(3,3))
ax = fig.add_subplot(1, 1, 1, projection='radar')
ax.plot(theta, values, color='k')
ax.plot(theta, optimum, color='r')
ax.set_varlabels(labels)
return fig, ax
# -----------------------------
# Reglages pour 'vim'
# vim:set autoindent expandtab tabstop=4 shiftwidth=4:
# cursor: 16 del