| commit | author | age | ||
| 425bf7 | 1 | from collections import Iterable |
| JK | 2 | from copy import deepcopy |
| 3 | ||
| 4 | from .DataReader import DataReader | |
| 5 | ||
| 6 | ||
| 7 | class SlidingWindow: | |
| 8 | def __init__(self, | |
| 9 | model_past_values=5, model_past_fields=None, | |
| 10 | model_future_values=0, model_future_fields=None, | |
| 11 | past_values=0, past_fields=None, | |
| 12 | future_values=0, future_fields=None, | |
| 13 | plot_fields=None, **kwargs): | |
| 14 | ||
| 15 | self.model_past_values = model_past_values | |
| 16 | if model_past_fields is None: | |
| 17 | model_past_fields = ['temp_in', 'temp_out', 'mode'] | |
| 18 | self.model_past_fields = model_past_fields | |
| 19 | ||
| 20 | self.past_values = past_values | |
| 21 | if past_fields is None: | |
| 22 | past_fields = ['temp_in', 'temp_out'] | |
| 23 | self.past_fields = past_fields | |
| 24 | ||
| 25 | self.max_past = max(self.model_past_values, self.past_values, 2) | |
| 26 | ||
| 27 | self.model_future_values = model_future_values | |
| 28 | if model_future_fields is None: | |
| 29 | model_future_fields = [] | |
| 30 | self.model_future_fields = model_future_fields | |
| 31 | ||
| 32 | self.future_values = future_values | |
| 33 | if future_fields is None: | |
| 34 | future_fields = model_future_fields | |
| 35 | self.future_fields = future_fields | |
| 36 | ||
| 37 | self.max_future = max(self.model_future_values, self.future_values, 1) | |
| 38 | ||
| 39 | self.observations = [] # list of dict | |
| 40 | ||
| 41 | self.plot = None | |
| 42 | if plot_fields: | |
| 43 | self.plot = {} | |
| 44 | for field in plot_fields: | |
| 45 | self.plot[field] = [] | |
| 46 | ||
| 47 | def add_observation(self, observation: dict) -> bool: | |
| 48 | self.observations = self.observations[-self.max_past - self.max_future:] | |
| 49 | self.observations.append(observation) | |
| 50 | ||
| 51 | if self.plot: | |
| 52 | for field in self.plot: | |
| 53 | if field.endswith('_calc'): | |
| 54 | self.plot[field].append(observation[field[:-5]]) | |
| 55 | else: | |
| 56 | self.plot[field].append(observation[field]) | |
| 57 | ||
| 58 | return len(self.observations) > self.max_past + self.max_future | |
| 59 | ||
| 60 | # SLIDING | |
| 61 | ||
| 62 | def next(self): | |
| 63 | self.max_past += 1 | |
| 64 | self.max_future -= 1 | |
| 65 | ||
| 66 | def copy(self, plot=False): | |
| 67 | result = SlidingWindow(model_past_values=self.model_past_values, | |
| 68 | model_past_fields=self.model_past_fields, | |
| 69 | model_future_values=self.model_future_values, | |
| 70 | model_future_fields=self.model_future_fields, | |
| 71 | past_values=self.past_values, past_fields=self.past_fields, | |
| 72 | future_values=self.future_values, future_fields=self.future_fields) | |
| 73 | result.observations = deepcopy(self.observations) | |
| 74 | if plot: | |
| 75 | result.plot = deepcopy(self.plot) | |
| 76 | return result | |
| 77 | ||
| 78 | # GET VALUE | |
| 79 | ||
| 80 | def get_value(self, field, offset=-1): | |
| 81 | return self.observations[self.max_past + offset][field] | |
| 82 | ||
| 83 | def get_previous_value(self, field): | |
| 84 | return self.get_value(field, -2) | |
| 85 | ||
| 86 | def get_current_value(self, field): | |
| 87 | return self.get_value(field, -1) | |
| 88 | ||
| 89 | def get_current_orig_value(self, field): | |
| 90 | offset = -1 | |
| 91 | return self.plot[field][-self.max_future - 1 + offset] | |
| 92 | ||
| 93 | def get_next_value(self, field): | |
| 94 | return self.get_value(field, 0) | |
| 95 | ||
| 96 | # SET VALUE | |
| 97 | ||
| 98 | def set_value(self, field, value, offset=-1): | |
| 99 | self.observations[self.max_past + offset][field] = value | |
| 100 | if self.plot and field + '_calc' in self.plot: | |
| 101 | self.plot[field + '_calc'][-self.max_future - 1 + offset] = value | |
| 102 | ||
| 103 | def set_current_value(self, field, value): | |
| 104 | self.set_value(field, value, -1) | |
| 105 | ||
| 106 | def set_next_value(self, field, value): | |
| 107 | self.set_value(field, value, 0) | |
| 108 | ||
| 109 | # PAST/FUTURE HELPERS | |
| 110 | ||
| 111 | def _get_past_values(self, num=None, fields=None, offset=0) -> list: | |
| 112 | if num is None: | |
| 113 | num = self.past_values | |
| 114 | if fields is None: | |
| 115 | fields = self.past_fields | |
| 116 | result = [ | |
| 117 | self.observations[i + offset][j] | |
| 118 | for j in fields | |
| 119 | for i in range(self.max_past - num, self.max_past) | |
| 120 | ] | |
| 121 | return result | |
| 122 | ||
| 123 | def _get_future_values(self, num=None, fields=None, offset=0) -> list: | |
| 124 | if num is None: | |
| 125 | num = self.future_values | |
| 126 | if fields is None: | |
| 127 | fields = self.future_fields | |
| 128 | return [ | |
| 129 | self.observations[i + offset][j] | |
| 130 | for j in fields | |
| 131 | for i in range(self.max_past, self.max_past + num) | |
| 132 | ] | |
| 133 | ||
| 134 | # MODEL | |
| 135 | ||
| 136 | def get_model_values(self) -> list: | |
| 137 | return self._get_past_values(num=self.model_past_values, fields=self.model_past_fields) \ | |
| 138 | + self._get_future_values(num=self.model_future_values, fields=self.model_future_fields) | |
| 139 | ||
| 140 | def get_model_size(self) -> int: | |
| 141 | return self.model_past_values * len(self.model_past_fields) \ | |
| 142 | + self.model_future_values * len(self.model_future_fields) | |
| 143 | ||
| 144 | def get_model_target(self): | |
| 145 | return self.get_next_value('temp_in') | |
| 146 | ||
| 147 | # WINDOW | |
| 148 | ||
| 149 | def get_window_values(self, offset=0): | |
| 150 | return self._get_past_values(num=self.past_values, fields=self.past_fields, offset=offset) \ | |
| 151 | + self._get_future_values(num=self.future_values, fields=self.future_fields, offset=offset) | |
| 152 | ||
| 153 | def get_window_size(self): | |
| 154 | return self.past_values * len(self.past_fields) + self.future_values * len(self.future_fields) | |
| 155 | ||
| 156 | # PLOT | |
| 157 | ||
| 158 | def get_plot_data(self, field): | |
| 159 | return self.plot[field][:-self.max_future-1] | |
| 160 | ||
| 161 | ||
| 162 | class SlidingWindowAdapter(Iterable): | |
| 163 | def __init__(self, reader: DataReader, **kwargs): | |
| 164 | self.reader = reader | |
| 165 | self.aggregate = SlidingWindow(**kwargs) | |
| 166 | ||
| 167 | def __iter__(self): | |
| 168 | return self | |
| 169 | ||
| 170 | def __next__(self) -> SlidingWindow: | |
| 171 | line = self.reader.pop() | |
| 172 | while not self.aggregate.add_observation(line): | |
| 173 | line = self.reader.pop() | |
| 174 | return self.aggregate | |
