-
-
Notifications
You must be signed in to change notification settings - Fork 3.9k
/
locator.py
259 lines (209 loc) · 9.21 KB
/
locator.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
#!/usr/bin/env python
# -*- coding: utf-8; py-indent-offset:4 -*-
###############################################################################
#
# Copyright (C) 2015-2023 Daniel Rodriguez
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
###############################################################################
from __future__ import (absolute_import, division, print_function,
unicode_literals)
'''
Redefine/Override matplotlib locators to make them work with index base x axis
which can be converted from/to dates
'''
import datetime
import warnings
from matplotlib.dates import AutoDateLocator as ADLocator
from matplotlib.dates import RRuleLocator as RRLocator
from matplotlib.dates import AutoDateFormatter as ADFormatter
from matplotlib.dates import (HOURS_PER_DAY, MIN_PER_HOUR, SEC_PER_MIN,
MONTHS_PER_YEAR, DAYS_PER_WEEK,
SEC_PER_HOUR, SEC_PER_DAY,
num2date, rrulewrapper, YearLocator,
MicrosecondLocator)
from dateutil.relativedelta import relativedelta
import numpy as np
def _idx2dt(idx, dates, tz):
if isinstance(idx, datetime.date):
return idx
ldates = len(dates)
idx = int(round(idx))
if idx >= ldates:
idx = ldates - 1
if idx < 0:
idx = 0
return num2date(dates[idx], tz)
class RRuleLocator(RRLocator):
def __init__(self, dates, o, tz=None):
self._dates = dates
super(RRuleLocator, self).__init__(o, tz)
def datalim_to_dt(self):
"""
Convert axis data interval to datetime objects.
"""
dmin, dmax = self.axis.get_data_interval()
if dmin > dmax:
dmin, dmax = dmax, dmin
return (_idx2dt(dmin, self._dates, self.tz),
_idx2dt(dmax, self._dates, self.tz))
def viewlim_to_dt(self):
"""
Converts the view interval to datetime objects.
"""
vmin, vmax = self.axis.get_view_interval()
if vmin > vmax:
vmin, vmax = vmax, vmin
return (_idx2dt(vmin, self._dates, self.tz),
_idx2dt(vmax, self._dates, self.tz))
def tick_values(self, vmin, vmax):
import bisect
dtnums = super(RRuleLocator, self).tick_values(vmin, vmax)
return [bisect.bisect_left(self._dates, x) for x in dtnums]
class AutoDateLocator(ADLocator):
def __init__(self, dates, *args, **kwargs):
self._dates = dates
super(AutoDateLocator, self).__init__(*args, **kwargs)
def datalim_to_dt(self):
"""
Convert axis data interval to datetime objects.
"""
dmin, dmax = self.axis.get_data_interval()
if dmin > dmax:
dmin, dmax = dmax, dmin
return (_idx2dt(dmin, self._dates, self.tz),
_idx2dt(dmax, self._dates, self.tz))
def viewlim_to_dt(self):
"""
Converts the view interval to datetime objects.
"""
vmin, vmax = self.axis.get_view_interval()
if vmin > vmax:
vmin, vmax = vmax, vmin
return (_idx2dt(vmin, self._dates, self.tz),
_idx2dt(vmax, self._dates, self.tz))
def tick_values(self, vmin, vmax):
import bisect
dtnums = super(AutoDateLocator, self).tick_values(vmin, vmax)
return [bisect.bisect_left(self._dates, x) for x in dtnums]
def get_locator(self, dmin, dmax):
'Pick the best locator based on a distance.'
delta = relativedelta(dmax, dmin)
tdelta = dmax - dmin
# take absolute difference
if dmin > dmax:
delta = -delta
tdelta = -tdelta
# The following uses a mix of calls to relativedelta and timedelta
# methods because there is incomplete overlap in the functionality of
# these similar functions, and it's best to avoid doing our own math
# whenever possible.
numYears = float(delta.years)
numMonths = (numYears * MONTHS_PER_YEAR) + delta.months
numDays = tdelta.days # Avoids estimates of days/month, days/year
numHours = (numDays * HOURS_PER_DAY) + delta.hours
numMinutes = (numHours * MIN_PER_HOUR) + delta.minutes
numSeconds = np.floor(tdelta.total_seconds())
numMicroseconds = np.floor(tdelta.total_seconds() * 1e6)
nums = [numYears, numMonths, numDays, numHours, numMinutes,
numSeconds, numMicroseconds]
use_rrule_locator = [True] * 6 + [False]
# Default setting of bymonth, etc. to pass to rrule
# [unused (for year), bymonth, bymonthday, byhour, byminute,
# bysecond, unused (for microseconds)]
byranges = [None, 1, 1, 0, 0, 0, None]
usemicro = False # use as flag to avoid raising an exception
# Loop over all the frequencies and try to find one that gives at
# least a minticks tick positions. Once this is found, look for
# an interval from an list specific to that frequency that gives no
# more than maxticks tick positions. Also, set up some ranges
# (bymonth, etc.) as appropriate to be passed to rrulewrapper.
for i, (freq, num) in enumerate(zip(self._freqs, nums)):
# If this particular frequency doesn't give enough ticks, continue
if num < self.minticks:
# Since we're not using this particular frequency, set
# the corresponding by_ to None so the rrule can act as
# appropriate
byranges[i] = None
continue
# Find the first available interval that doesn't give too many
# ticks
for interval in self.intervald[freq]:
if num <= interval * (self.maxticks[freq] - 1):
break
else:
# We went through the whole loop without breaking, default to
# the last interval in the list and raise a warning
warnings.warn('AutoDateLocator was unable to pick an '
'appropriate interval for this date range. '
'It may be necessary to add an interval value '
"to the AutoDateLocator's intervald dictionary."
' Defaulting to {0}.'.format(interval))
# Set some parameters as appropriate
self._freq = freq
if self._byranges[i] and self.interval_multiples:
byranges[i] = self._byranges[i][::interval]
interval = 1
else:
byranges[i] = self._byranges[i]
# We found what frequency to use
break
else:
if False:
raise ValueError(
'No sensible date limit could be found in the '
'AutoDateLocator.')
else:
usemicro = True
if not usemicro and use_rrule_locator[i]:
_, bymonth, bymonthday, byhour, byminute, bysecond, _ = byranges
rrule = rrulewrapper(self._freq, interval=interval,
dtstart=dmin, until=dmax,
bymonth=bymonth, bymonthday=bymonthday,
byhour=byhour, byminute=byminute,
bysecond=bysecond)
locator = RRuleLocator(self._dates, rrule, self.tz)
else:
if usemicro:
interval = 1 # not set because the for else: was met
locator = MicrosecondLocator(interval, tz=self.tz)
locator.set_axis(self.axis)
try:
# try for matplotlib < 3.6.0
locator.set_view_interval(*self.axis.get_view_interval())
locator.set_data_interval(*self.axis.get_data_interval())
except Exception as e:
try:
# try for matplotlib >= 3.6.0
self.axis.set_view_interval(*self.axis.get_view_interval())
self.axis.set_data_interval(*self.axis.get_data_interval())
locator.set_axis(self.axis)
except Exception as e:
print("Error:", e)
return locator
class AutoDateFormatter(ADFormatter):
def __init__(self, dates, locator, tz=None, defaultfmt='%Y-%m-%d'):
self._dates = dates
super(AutoDateFormatter, self).__init__(locator, tz, defaultfmt)
def __call__(self, x, pos=None):
'''Return the label for time x at position pos'''
x = int(round(x))
ldates = len(self._dates)
if x >= ldates:
x = ldates - 1
if x < 0:
x = 0
ix = self._dates[x]
return super(AutoDateFormatter, self).__call__(ix, pos)