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generate_data.py
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generate_data.py
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import pandas as pd
from datetime import timedelta
from nilmtk.tests.testingtools import data_dir
from os.path import join
import itertools
from collections import OrderedDict
import numpy as np
from nilmtk.consts import JOULES_PER_KWH
from nilmtk.measurement import measurement_columns, AC_TYPES
from nilmtk.utils import flatten_2d_list
MAX_SAMPLE_PERIOD = 15
def power_data(simple=True):
"""
Returns
-------
DataFrame
"""
if simple:
STEP = 10
data = [0, 0, 0, 100, 100, 100, 150,
150, 200, 0, 0, 100, 5000, 0]
secs = np.arange(start=0, stop=len(data) * STEP, step=STEP).tolist()
else:
data = [0, 0, 0, 100, 100, 100, 150,
150, 200, 0, 0, 100, 5000, 0]
secs = [0, 10, 20, 30, 200, 210, 220,
230, 240, 249, 260, 270, 290, 1000]
data = np.array(data, dtype=np.float32)
active = data
reactive = data * 0.9
apparent = data * 1.1
index = [pd.Timestamp('2010-01-01') + timedelta(seconds=sec)
for sec in secs]
column_tuples = [('power', ac_type)
for ac_type in ['active', 'reactive', 'apparent']]
df = pd.DataFrame(np.array([active, reactive, apparent]).transpose(),
index=index, dtype=np.float32,
columns=measurement_columns(column_tuples))
# calculate energy
# this is not cumulative energy
timedelta_secs = np.diff(secs).clip(
0, MAX_SAMPLE_PERIOD).astype(np.float32)
for ac_type in AC_TYPES:
joules = timedelta_secs * df['power', ac_type].values[:-1]
joules = np.concatenate([joules, [0]])
kwh = joules / JOULES_PER_KWH
if ac_type == 'reactive':
df['energy', ac_type] = kwh
elif ac_type == 'apparent':
df['cumulative energy', ac_type] = kwh.cumsum()
return df
def create_random_df_hierarchical_column_index():
N_PERIODS = 10000
N_METERS = 5
N_MEASUREMENTS_PER_METER = 3
meters = ['meter{:d}'.format(i) for i in range(1, N_METERS + 1)]
meters = [[m] * N_MEASUREMENTS_PER_METER for m in meters]
meters = flatten_2d_list(meters)
level2 = ['power', 'power', 'voltage'][
:N_MEASUREMENTS_PER_METER] * N_METERS
level3 = ['active', 'reactive', ''][:N_MEASUREMENTS_PER_METER] * N_METERS
columns = [meters, level2, level3]
columns = pd.MultiIndex.from_arrays(columns)
rng = pd.date_range('2012-01-01', freq='S', periods=N_PERIODS)
data = np.random.randint(low=0, high=1000,
size=(N_PERIODS,
N_METERS * N_MEASUREMENTS_PER_METER))
return pd.DataFrame(data=data, index=rng, columns=columns, dtype=np.float32)
MEASUREMENTS = [('power', 'active'), ('energy', 'reactive'), ('voltage', '')]
def create_random_df():
N_PERIODS = 10000
rng = pd.date_range('2012-01-01', freq='S', periods=N_PERIODS)
data = np.random.randint(
low=0, high=1000, size=(N_PERIODS, len(MEASUREMENTS)))
return pd.DataFrame(data=data, index=rng, dtype=np.float32,
columns=measurement_columns(MEASUREMENTS))
TEST_METER = {'manufacturer': 'Test Manufacturer',
'model': 'Random Meter',
'sample_period': 10,
'max_sample_period': MAX_SAMPLE_PERIOD,
'measurements': []}
for col in MEASUREMENTS:
TEST_METER['measurements'].append({
'physical_quantity': col[0], 'type': col[1],
'lower_limit': 0, 'upper_limit': 6000})
def add_building_metadata(store, elec_meters, key='building1', appliances=[]):
node = store.get_node(key)
md = {
'instance': 1,
'elec_meters': elec_meters,
'appliances': appliances
}
node._f_setattr('metadata', md)
def create_co_test_hdf5():
FILENAME = join(data_dir(), 'co_test.h5')
N_METERS = 3
chunk = 1000
N_PERIODS = 4 * chunk
rng = pd.date_range('2012-01-01', freq='S', periods=N_PERIODS)
dfs = OrderedDict()
data = OrderedDict()
# mains meter data
data[1] = np.array([0, 200, 1000, 1200] * chunk)
# appliance 1 data
data[2] = np.array([0, 200, 0, 200] * chunk)
# appliance 2 data
data[3] = np.array([0, 0, 1000, 1000] * chunk)
for i in range(1, 4):
dfs[i] = pd.DataFrame(data=data[i], index=rng, dtype=np.float32,
columns=measurement_columns([('power', 'active')]))
store = pd.HDFStore(FILENAME, 'w', complevel=9, complib='zlib')
elec_meter_metadata = {}
for meter in range(1, N_METERS + 1):
key = 'building1/elec/meter{:d}'.format(meter)
print("Saving", key)
store.put(key, dfs[meter], format='table')
elec_meter_metadata[meter] = {
'device_model': TEST_METER['model'],
'submeter_of': 1,
'data_location': key
}
# For mains meter, we need to specify that it is a site meter
del elec_meter_metadata[1]['submeter_of']
elec_meter_metadata[1]['site_meter'] = True
# Save dataset-wide metadata
store.root._v_attrs.metadata = {
'meter_devices': {TEST_METER['model']: TEST_METER}}
print(store.root._v_attrs.metadata)
# Building metadata
add_building_metadata(store, elec_meter_metadata)
for key in store.keys():
print(store[key])
store.flush()
store.close()
def create_random_hdf5():
FILENAME = join(data_dir(), 'random.h5')
N_METERS = 5
store = pd.HDFStore(FILENAME, 'w', complevel=9, complib='zlib')
elec_meter_metadata = {}
for meter in range(1, N_METERS + 1):
key = 'building1/elec/meter{:d}'.format(meter)
print("Saving", key)
store.put(key, create_random_df(), format='table')
elec_meter_metadata[meter] = {
'device_model': TEST_METER['model'],
'submeter_of': 1,
'data_location': key
}
# Save dataset-wide metadata
store.root._v_attrs.metadata = {
'meter_devices': {TEST_METER['model']: TEST_METER}}
print(store.root._v_attrs.metadata)
# Building metadata
add_building_metadata(store, elec_meter_metadata)
store.flush()
store.close()
def create_energy_hdf5(simple=True):
fname = 'energy.h5' if simple else 'energy_complex.h5'
FILENAME = join(data_dir(), fname)
df = power_data(simple=simple)
meter_device = {
'manufacturer': 'Test Manufacturer',
'model': 'Energy Meter',
'sample_period': 10,
'max_sample_period': MAX_SAMPLE_PERIOD,
'measurements': []
}
for physical_quantity, ac_type in df.columns.tolist():
meter_device['measurements'].append({
'physical_quantity': physical_quantity, 'type': ac_type,
'lower_limit': 0, 'upper_limit': 6000})
store = pd.HDFStore(FILENAME, 'w', complevel=9, complib='zlib')
elec_meter_metadata = {}
# Save sensor data
for meter_i in [1, 2, 3]:
key = 'building1/elec/meter{:d}'.format(meter_i)
print("Saving", key)
store.put(key, df, format='table')
meta = {
'device_model': meter_device['model'],
'data_location': key
}
additional_meta = {
1: {'site_meter': True},
2: {'submeter_of': 1},
3: {'submeter_of': 2}
}
meta.update(additional_meta[meter_i])
elec_meter_metadata[meter_i] = meta
# Save dataset-wide metadata
store.root._v_attrs.metadata = {
'meter_devices': {meter_device['model']: meter_device}}
# Add building metadata
add_building_metadata(store, elec_meter_metadata)
store.flush()
store.close()
def create_all():
create_energy_hdf5()
create_energy_hdf5(simple=False)
create_random_hdf5()
create_co_test_hdf5()