1 | # -*- coding: utf-8 -*- |
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2 | # |
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3 | # This file is part of Glances. |
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4 | # |
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5 | # Copyright (C) 2019 Nicolargo <[email protected]> |
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6 | # |
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7 | # Glances is free software; you can redistribute it and/or modify |
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8 | # it under the terms of the GNU Lesser General Public License as published by |
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9 | # the Free Software Foundation, either version 3 of the License, or |
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10 | # (at your option) any later version. |
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11 | # |
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12 | # Glances is distributed in the hope that it will be useful, |
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13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | # GNU Lesser General Public License for more details. |
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16 | # |
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17 | # You should have received a copy of the GNU Lesser General Public License |
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18 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 | |||
20 | # flake8: noqa |
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21 | # pylint: skip-file |
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22 | """Python 2/3 compatibility shims.""" |
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23 | |||
24 | from __future__ import print_function, unicode_literals |
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25 | |||
26 | import operator |
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27 | import sys |
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28 | import unicodedata |
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29 | import types |
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30 | import subprocess |
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31 | |||
32 | from glances.logger import logger |
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33 | |||
34 | PY3 = sys.version_info[0] == 3 |
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35 | |||
36 | if PY3: |
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37 | import queue |
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38 | from configparser import ConfigParser, NoOptionError, NoSectionError |
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39 | from statistics import mean |
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40 | from xmlrpc.client import Fault, ProtocolError, ServerProxy, Transport, Server |
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41 | from xmlrpc.server import SimpleXMLRPCRequestHandler, SimpleXMLRPCServer |
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42 | from urllib.request import urlopen |
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43 | from urllib.error import HTTPError, URLError |
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44 | from urllib.parse import urlparse |
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45 | |||
46 | input = input |
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47 | range = range |
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48 | map = map |
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49 | |||
50 | text_type = str |
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51 | binary_type = bytes |
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52 | bool_type = bool |
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53 | long = int |
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54 | |||
55 | viewkeys = operator.methodcaller('keys') |
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56 | viewvalues = operator.methodcaller('values') |
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57 | viewitems = operator.methodcaller('items') |
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58 | |||
59 | def printandflush(string): |
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60 | """Print and flush (used by stdout* outputs modules)""" |
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61 | print(string, flush=True) |
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62 | |||
63 | def to_ascii(s): |
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64 | """Convert the bytes string to a ASCII string |
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65 | Usefull to remove accent (diacritics)""" |
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66 | if isinstance(s, binary_type): |
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67 | return s.decode() |
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68 | return s.encode('ascii', 'ignore').decode() |
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69 | |||
70 | def listitems(d): |
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71 | return list(d.items()) |
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72 | |||
73 | def listkeys(d): |
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74 | return list(d.keys()) |
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75 | |||
76 | def listvalues(d): |
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77 | return list(d.values()) |
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78 | |||
79 | def iteritems(d): |
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80 | return iter(d.items()) |
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81 | |||
82 | def iterkeys(d): |
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83 | return iter(d.keys()) |
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84 | |||
85 | def itervalues(d): |
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86 | return iter(d.values()) |
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87 | |||
88 | def u(s, errors='replace'): |
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89 | if isinstance(s, text_type): |
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90 | return s |
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91 | return s.decode('utf-8', errors=errors) |
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92 | |||
93 | def b(s, errors='replace'): |
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94 | if isinstance(s, binary_type): |
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95 | return s |
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96 | return s.encode('utf-8', errors=errors) |
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97 | |||
98 | def n(s): |
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99 | '''Only in Python 2... |
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100 | from future.utils import bytes_to_native_str as n |
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101 | ''' |
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102 | return s |
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103 | |||
104 | def nativestr(s, errors='replace'): |
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105 | if isinstance(s, text_type): |
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106 | return s |
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107 | elif isinstance(s, (int, float)): |
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108 | return s.__str__() |
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109 | else: |
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110 | return s.decode('utf-8', errors=errors) |
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111 | |||
112 | def system_exec(command): |
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113 | """Execute a system command and return the resul as a str""" |
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114 | try: |
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115 | res = subprocess.run(command.split(' '), |
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116 | stdout=subprocess.PIPE).stdout.decode('utf-8') |
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117 | except Exception as e: |
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118 | logger.debug('Can not evaluate command {} ({})'.format(command, e)) |
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119 | res = '' |
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120 | return res.rstrip() |
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121 | |||
122 | else: |
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123 | from future.utils import bytes_to_native_str as n |
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124 | import Queue as queue |
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125 | from itertools import imap as map |
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126 | from ConfigParser import SafeConfigParser as ConfigParser, NoOptionError, NoSectionError |
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127 | from SimpleXMLRPCServer import SimpleXMLRPCRequestHandler, SimpleXMLRPCServer |
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128 | from xmlrpclib import Fault, ProtocolError, ServerProxy, Transport, Server |
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129 | from urllib2 import urlopen, HTTPError, URLError |
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130 | from urlparse import urlparse |
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131 | |||
132 | input = raw_input |
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133 | range = xrange |
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134 | ConfigParser.read_file = ConfigParser.readfp |
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135 | |||
136 | text_type = unicode |
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137 | binary_type = str |
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138 | bool_type = types.BooleanType |
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139 | long = long |
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140 | |||
141 | viewkeys = operator.methodcaller('viewkeys') |
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142 | viewvalues = operator.methodcaller('viewvalues') |
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143 | viewitems = operator.methodcaller('viewitems') |
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144 | |||
145 | def printandflush(string): |
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146 | """Print and flush (used by stdout* outputs modules)""" |
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147 | print(string) |
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148 | sys.stdout.flush() |
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149 | |||
150 | def mean(numbers): |
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151 | return float(sum(numbers)) / max(len(numbers), 1) |
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152 | |||
153 | def to_ascii(s): |
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154 | """Convert the unicode 's' to a ASCII string |
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155 | Usefull to remove accent (diacritics)""" |
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156 | if isinstance(s, binary_type): |
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157 | return s |
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158 | return unicodedata.normalize('NFKD', s).encode('ascii', 'ignore') |
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159 | |||
160 | def listitems(d): |
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161 | return d.items() |
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162 | |||
163 | def listkeys(d): |
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164 | return d.keys() |
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165 | |||
166 | def listvalues(d): |
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167 | return d.values() |
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168 | |||
169 | def iteritems(d): |
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170 | return d.iteritems() |
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171 | |||
172 | def iterkeys(d): |
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173 | return d.iterkeys() |
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174 | |||
175 | def itervalues(d): |
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176 | return d.itervalues() |
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177 | |||
178 | def u(s, errors='replace'): |
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179 | if isinstance(s, text_type): |
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180 | return s.encode('utf-8', errors=errors) |
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181 | return s.decode('utf-8', errors=errors) |
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182 | |||
183 | def b(s, errors='replace'): |
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184 | if isinstance(s, binary_type): |
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185 | return s |
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186 | return s.encode('utf-8', errors=errors) |
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187 | |||
188 | def nativestr(s, errors='replace'): |
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189 | if isinstance(s, binary_type): |
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190 | return s |
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191 | elif isinstance(s, (int, float)): |
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192 | return s.__str__() |
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193 | else: |
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194 | return s.encode('utf-8', errors=errors) |
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195 | |||
196 | def system_exec(command): |
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197 | """Execute a system command and return the resul as a str""" |
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198 | try: |
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199 | res = subprocess.check_output(command.split(' ')) |
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200 | except Exception as e: |
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201 | logger.debug('Can not execute command {} ({})'.format(command, e)) |
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202 | res = '' |
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203 | return res.rstrip() |
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204 | |||
205 | |||
206 | # Globals functions for both Python 2 and 3 |
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207 | |||
208 | |||
209 | def subsample(data, sampling): |
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210 | """Compute a simple mean subsampling. |
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211 | |||
212 | Data should be a list of numerical itervalues |
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213 | |||
214 | Return a subsampled list of sampling lenght |
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215 | """ |
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216 | if len(data) <= sampling: |
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217 | return data |
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218 | sampling_length = int(round(len(data) / float(sampling))) |
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219 | return [mean(data[s * sampling_length:(s + 1) * sampling_length]) for s in range(0, sampling)] |
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220 | |||
221 | |||
222 | def time_serie_subsample(data, sampling): |
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223 | """Compute a simple mean subsampling. |
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224 | |||
225 | Data should be a list of set (time, value) |
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226 | |||
227 | Return a subsampled list of sampling lenght |
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228 | """ |
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229 | if len(data) <= sampling: |
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230 | return data |
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231 | t = [t[0] for t in data] |
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232 | v = [t[1] for t in data] |
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233 | sampling_length = int(round(len(data) / float(sampling))) |
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234 | t_subsampled = [t[s * sampling_length:(s + 1) * sampling_length][0] for s in range(0, sampling)] |
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235 | v_subsampled = [mean(v[s * sampling_length:(s + 1) * sampling_length]) for s in range(0, sampling)] |
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236 | return list(zip(t_subsampled, v_subsampled)) |
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237 |