Code
read_acc(test_path("test-data-hip-imu.csv"))
Output
# Start time: 2017-12-09 15:00:00
# Sampling frequency: 100Hz
# Accelerometer placement: Non-specified
# Subject body mass: Non-specified
# Filter: No filter applied
# Data dimensions: 100 x 4
timestamp acc_X acc_Y acc_Z
<dttm> <dbl> <dbl> <dbl>
1 2017-12-09 15:00:00 -0.0122 0.00830 0.967
2 2017-12-09 15:00:00 -0.0151 0.00732 0.967
3 2017-12-09 15:00:00 -0.0137 0.00635 0.964
4 2017-12-09 15:00:00 -0.0132 0.00684 0.969
5 2017-12-09 15:00:00 -0.0137 0.00586 0.965
6 2017-12-09 15:00:00 -0.0137 0.00586 0.965
7 2017-12-09 15:00:00 -0.0151 0.00586 0.967
8 2017-12-09 15:00:00 -0.0146 0.00635 0.964
9 2017-12-09 15:00:00 -0.0156 0.00586 0.966
10 2017-12-09 15:00:00 -0.0151 0.00635 0.963
# ... with 90 more rows
# i Use `print(n = ...)` to see more rows
Code
specify_parameters(data, "hip", 80)
Output
# Start time: 2017-12-09 15:00:00
# Sampling frequency: 100Hz
# Accelerometer placement: Hip
# Subject body mass: 80kg
# Filter: No filter applied
# Data dimensions: 100 x 4
timestamp acc_X acc_Y acc_Z
<dttm> <dbl> <dbl> <dbl>
1 2017-12-09 15:00:00 -0.0122 0.00830 0.967
2 2017-12-09 15:00:00 -0.0151 0.00732 0.967
3 2017-12-09 15:00:00 -0.0137 0.00635 0.964
4 2017-12-09 15:00:00 -0.0132 0.00684 0.969
5 2017-12-09 15:00:00 -0.0137 0.00586 0.965
6 2017-12-09 15:00:00 -0.0137 0.00586 0.965
7 2017-12-09 15:00:00 -0.0151 0.00586 0.967
8 2017-12-09 15:00:00 -0.0146 0.00635 0.964
9 2017-12-09 15:00:00 -0.0156 0.00586 0.966
10 2017-12-09 15:00:00 -0.0151 0.00635 0.963
# ... with 90 more rows
# i Use `print(n = ...)` to see more rows
Code
filter_acc(data)
Output
# Start time: 2017-12-09 15:00:00
# Sampling frequency: 100Hz
# Accelerometer placement: Non-specified
# Subject body mass: Non-specified
# Filter: Butterworth (4th-ord, low-pass, 20Hz)
# Data dimensions: 100 x 4
timestamp acc_X acc_Y acc_Z
<dttm> <dbl> <dbl> <dbl>
1 2017-12-09 15:00:00 -0.00948 0.00552 0.678
2 2017-12-09 15:00:00 -0.0138 0.00738 0.964
3 2017-12-09 15:00:00 -0.0150 0.00744 1.05
4 2017-12-09 15:00:00 -0.0140 0.00656 0.995
5 2017-12-09 15:00:00 -0.0131 0.00590 0.943
6 2017-12-09 15:00:00 -0.0135 0.00578 0.943
7 2017-12-09 15:00:00 -0.0147 0.00585 0.966
8 2017-12-09 15:00:00 -0.0155 0.00592 0.976
9 2017-12-09 15:00:00 -0.0154 0.00623 0.970
10 2017-12-09 15:00:00 -0.0146 0.00691 0.962
# ... with 90 more rows
# i Use `print(n = ...)` to see more rows
Code
find_peaks(data, "vertical")
Output
# Start time: 2021-04-06 15:43:00
# Sampling frequency: 100Hz
# Accelerometer placement: Non-specified
# Subject body mass: Non-specified
# Filter: No filter applied
# Data dimensions: 251 x 2
timestamp vertical_peak_acc
<dttm> <dbl>
1 2021-04-06 15:43:00 1.83
2 2021-04-06 15:43:03 1.41
3 2021-04-06 15:43:04 1.59
4 2021-04-06 15:43:06 1.35
5 2021-04-06 15:43:09 2.61
6 2021-04-06 15:43:11 1.38
7 2021-04-06 15:43:14 1.42
8 2021-04-06 15:43:16 1.36
9 2021-04-06 15:43:16 1.46
10 2021-04-06 15:43:17 1.32
# ... with 241 more rows
# i Use `print(n = ...)` to see more rows
Code
find_peaks(data, "resultant")
Output
# Start time: 2021-04-06 15:43:00
# Sampling frequency: 100Hz
# Accelerometer placement: Non-specified
# Subject body mass: Non-specified
# Filter: No filter applied
# Data dimensions: 303 x 2
timestamp resultant_peak_acc
<dttm> <dbl>
1 2021-04-06 15:43:00 2.24
2 2021-04-06 15:43:00 1.43
3 2021-04-06 15:43:02 1.49
4 2021-04-06 15:43:03 1.68
5 2021-04-06 15:43:04 1.49
6 2021-04-06 15:43:04 1.30
7 2021-04-06 15:43:05 2.13
8 2021-04-06 15:43:05 1.34
9 2021-04-06 15:43:06 1.39
10 2021-04-06 15:43:07 1.46
# ... with 293 more rows
# i Use `print(n = ...)` to see more rows
Code
find_peaks(data, "all")
Output
# Start time: 2021-04-06 15:43:00
# Sampling frequency: 100Hz
# Accelerometer placement: Non-specified
# Subject body mass: Non-specified
# Filter: No filter applied
# Data dimensions: 331 x 3
timestamp vertical_peak_acc resultant_peak_acc
<dttm> <dbl> <dbl>
1 2021-04-06 15:43:00 1.83 2.24
2 2021-04-06 15:43:00 NA 1.43
3 2021-04-06 15:43:02 NA 1.49
4 2021-04-06 15:43:03 1.41 NA
5 2021-04-06 15:43:03 NA 1.68
6 2021-04-06 15:43:04 NA 1.49
7 2021-04-06 15:43:04 NA 1.30
8 2021-04-06 15:43:04 1.59 NA
9 2021-04-06 15:43:05 NA 2.13
10 2021-04-06 15:43:05 NA 1.34
# ... with 321 more rows
# i Use `print(n = ...)` to see more rows
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