def extract_delta_time(data):
'''
Creates array of delta times between points in seconds
'''
times, coordinates = data[:, 0], data[:, 1:]
return np.array([delta_float_time(times[i], times[i+1])
for i in range(len(times)-1)])
def test_delta_time():
datestr_array = [
'04-08-2015_14-35-50_PDT',
'04-08-2015_14-52-31_PDT',
'04-08-2015_14-52-37_PDT',
'04-08-2015_14-59-30_PDT',
'04-08-2015_14-59-30_PDT',
'05-08-2015_15-46-30_PDT',
'05-09-2015_15-46-38_PDT',
]
dates_nums = [date_str_to_num_converter(el) for el in datestr_array]
dts = []
for i in range(len(dates_nums) - 1):
dts.append(delta_float_time(dates_nums[i], dates_nums[i+1]))
expected_dts = [1001, 6, 413, 0, 89220, 2678408]
assert(expected_dts == dts)