Loupe to NetCDF

import matplotlib.pyplot as plt
from os.path import join
import numpy as np
import gspy

Convert the Loupe csv data to NetCDF

Initialize the Survey

# Path to example files
data_path = '../data_files/loupe'

# Survey metadata file
metadata = join(data_path, "data//LoupeEM_survey_md.yml")

# Establish the Survey
survey = gspy.Survey.from_dict(metadata)

data_container = survey.gs.add_container('data')

data = join(data_path, 'data//Kankakee.dat')
metadata = join(data_path, 'data//Loupe_data_metadata.yml')
data_container.gs.add(key='raw_data', data_filename=data, metadata_file=metadata, file_type='loupe')

<xarray.DatasetView> Size: 2MB
Dimensions:       (index: 2474, gate_times: 23)
Coordinates:
    spatial_ref   float64 8B 0.0
  * index         (index) int32 10kB 0 1 2 3 4 5 ... 2469 2470 2471 2472 2473
    x             (index) float64 20kB 5.248e+05 5.248e+05 ... 5.246e+05
    y             (index) float64 20kB 4.583e+06 4.583e+06 ... 4.583e+06
    z             (index) float64 20kB 211.5 211.5 211.5 ... 211.0 211.1 211.1
  * gate_times    (gate_times) float64 184B 1.297e-05 1.495e-05 ... 0.002183
Data variables: (12/45)
    fid           (index) object 20kB '1' '2' '3' '4' ... '2961' '2962' '2963'
    acq           (index) float64 20kB 1.0 1.0 1.0 1.0 1.0 ... 6.0 6.0 6.0 6.0
    acq_rdg       (index) float64 20kB 0.0 1.0 2.0 3.0 ... 424.0 425.0 426.0
    acq_time      (index) object 20kB '20230808T175252.504075397Z' ... '20230...
    time          (index) object 20kB '20230808T175253.000000000Z' ... '20230...
    ts            (index) float64 20kB 1.692e+09 1.692e+09 ... 1.692e+09
    ...            ...
    y_powerphase  (index) float64 20kB 1.006 1.07 1.008 ... -2.718 -2.558 -2.693
    z_powerphase  (index) float64 20kB 1.663 1.679 1.748 ... 1.081 0.9304 0.8736
    X_CH          (index, gate_times) float64 455kB 491.5 357.4 ... 0.001494
    Y_CH          (index, gate_times) float64 455kB -6.219 6.26 ... -0.0268
    Z_CH          (index, gate_times) float64 455kB 499.8 434.7 ... 0.01253
    line          (index) int64 20kB 1 1 1 1 1 1 1 1 1 1 ... 6 6 6 6 6 6 6 6 6 6
Attributes:
    content:     raw data
    comment:     This dataset includes minimally processed (raw) AEM data
    type:        data
    method:      electromagnetic
    instrument:  loupe

xarray.DataTree

Groups: (1)
<xarray.DatasetView> Size: 12kB Dimensions: (index: 2474, gate_times: 23, nv: 2, n_loop_vertices: 8, xyz: 3, n_transmitter: 1, waveform_time: 4, n_receiver: 3, n_component: 3) Coordinates: * index (index) int32 10kB 0 1 2 ... 2472 2473 * gate_times (gate_times) float64 184B 1.297e-05 ... * nv (nv) int64 16B 0 1 * n_loop_vertices (n_loop_vertices) int64 64B 0 1 ... 6 7 * xyz (xyz) int64 24B 0 1 2 * n_transmitter (n_transmitter) int64 8B 0 * waveform_time (waveform_time) <U32 512B '-0.002777... * n_receiver (n_receiver) int64 24B 0 1 2 * n_component (n_component) int64 24B 0 1 2 Data variables: (12/35) gate_times_bnds (gate_times, nv) float64 368B 1.098e... n_loop_vertices_bnds (n_loop_vertices, nv) float64 128B -... xyz_bnds (xyz, nv) float64 48B -0.5 0.5 ... 2.5 transmitter_label (n_transmitter) <U1 4B 'z' transmitter_number_of_turns (n_transmitter) int64 8B 13 transmitter_coordinates (n_transmitter, n_loop_vertices, xyz) float64 192B ... ... ... component_txrx_dx (n_component) float64 24B -10.0 ... ... component_txrx_dy (n_component) float64 24B 0.0 0.0 0.0 component_txrx_dz (n_component) float64 24B -0.75 ... ... component_data_type (n_component) <U4 48B 'dBdt' ... 'dBdt' component_gate_times (n_component) <U10 120B 'gate_times'... sample_rate object 8B None Attributes: type: system mode: ground method: electromagnetic submethod: time domain instrument: loupe name: loupe_system data_normalized: True reference_frame: right-handed positive down sample_rate: 0.1 digitization_frequency: 504000.0 stacks: 360 powerline_frequency: 60.0
loupe_system
Groups: (0)
Dimensions:
index: 2474
gate_times: 23
nv: 2
n_loop_vertices: 8
xyz: 3
n_transmitter: 1
waveform_time: 4
n_receiver: 3
n_component: 3
Coordinates: (7)
nv
(nv)
int64
0 1
standard_name :
nv
long_name :
Number of vertices for bounding variables
units :
not_defined
null_value :
not_defined
valid_range :
[0. 1.]
grid_mapping :
spatial_ref
array([0, 1])
n_loop_vertices
(n_loop_vertices)
int64
0 1 2 3 4 5 6 7
standard_name :
n_loop_vertices
long_name :
number of loop vertices
units :
not_defined
null_value :
not_defined
valid_range :
[0. 7.]
grid_mapping :
spatial_ref
bounds :
n_loop_vertices_bnds
array([0, 1, 2, 3, 4, 5, 6, 7])
xyz
(xyz)
int64
0 1 2
standard_name :
xyz
long_name :
coordinates of the loop vertices
units :
not_defined
null_value :
not_defined
valid_range :
[0. 2.]
grid_mapping :
spatial_ref
bounds :
xyz_bnds
array([0, 1, 2])
n_transmitter
(n_transmitter)
int64
0
standard_name :
n_transmitter
long_name :
Number of transmitters
units :
not_defined
null_value :
not_defined
valid_range :
[0. 0.]
grid_mapping :
spatial_ref
array([0])
waveform_time
(waveform_time)
<U32
'-0.00277778' ... '9e-06'
label :
['z']
prefix :
transmitter
long_name :
waveform time
null_value :
not_defined
units :
s
standard_name :
waveform_time
valid_range :
[-2.77778e-03 9.00000e-06]
grid_mapping :
spatial_ref
array(['-0.00277778', '-0.00276878', '0.0', '9e-06'], dtype='<U32')
n_receiver
(n_receiver)
int64
0 1 2
standard_name :
n_receiver
long_name :
Number of receivers
units :
not_defined
null_value :
not_defined
valid_range :
[0. 2.]
grid_mapping :
spatial_ref
array([0, 1, 2])
n_component
(n_component)
int64
0 1 2
standard_name :
n_component
long_name :
Number of components
units :
not_defined
null_value :
not_defined
valid_range :
[0. 2.]
grid_mapping :
spatial_ref
array([0, 1, 2])
Data variables: (35)
gate_times_bnds
(gate_times, nv)
float64
1.098e-05 1.495e-05 ... 0.002557
standard_name :
gate_times_bounds
long_name :
receiver gate times cell boundaries
units :
seconds
null_value :
not_defined
valid_range :
[1.09800e-05 2.55662e-03]
grid_mapping :
spatial_ref
array([[1.09800e-05, 1.49500e-05], [1.29700e-05, 1.69400e-05], [1.49500e-05, 1.89200e-05], [1.69400e-05, 2.09000e-05], [1.89200e-05, 2.28900e-05], [2.09000e-05, 2.88400e-05], [2.68600e-05, 3.47900e-05], [3.28100e-05, 4.47100e-05], [4.07500e-05, 5.66200e-05], [5.26500e-05, 7.24900e-05], [6.65400e-05, 9.03500e-05], [8.63800e-05, 1.18130e-04], [1.12170e-04, 1.55830e-04], [1.45900e-04, 2.01460e-04], [1.91540e-04, 2.66940e-04], [2.53050e-04, 3.52250e-04], [3.32410e-04, 4.67330e-04], [4.39560e-04, 6.22100e-04], [5.82410e-04, 8.22490e-04], [7.72890e-04, 1.09233e-03], [1.02487e-03, 1.44948e-03], [1.36019e-03, 1.92567e-03], [1.80860e-03, 2.55662e-03]])
n_loop_vertices_bnds
(n_loop_vertices, nv)
float64
-0.5 0.5 0.5 1.5 ... 6.5 6.5 7.5
standard_name :
n_loop_vertices_bounds
long_name :
number of loop vertices cell boundaries
units :
not_defined
null_value :
not_defined
valid_range :
[-0.5 7.5]
grid_mapping :
spatial_ref
array([[-0.5, 0.5], [ 0.5, 1.5], [ 1.5, 2.5], [ 2.5, 3.5], [ 3.5, 4.5], [ 4.5, 5.5], [ 5.5, 6.5], [ 6.5, 7.5]])
xyz_bnds
(xyz, nv)
float64
-0.5 0.5 0.5 1.5 1.5 2.5
standard_name :
xyz_bounds
long_name :
coordinates of the loop vertices cell boundaries
units :
not_defined
null_value :
not_defined
valid_range :
[-0.5 2.5]
grid_mapping :
spatial_ref
array([[-0.5, 0.5], [ 0.5, 1.5], [ 1.5, 2.5]])
transmitter_label
(n_transmitter)
<U1
'z'
grid_mapping :
spatial_ref
array(['z'], dtype='<U1')
transmitter_number_of_turns
(n_transmitter)
int64
13
valid_range :
[13. 13.]
grid_mapping :
spatial_ref
array([13])
transmitter_coordinates
(n_transmitter, n_loop_vertices, xyz)
float64
0.33 0.14 0.0 ... 0.33 -0.14 0.0
valid_range :
[-0.33 0.33]
grid_mapping :
spatial_ref
array([[[ 0.33, 0.14, 0. ], [ 0.14, 0.33, 0. ], [-0.14, 0.33, 0. ], [-0.33, 0.14, 0. ], [-0.33, -0.14, 0. ], [-0.14, -0.33, 0. ], [ 0.14, -0.33, 0. ], [ 0.33, -0.14, 0. ]]])
transmitter_area
()
object
None
units :
m^2
grid_mapping :
spatial_ref
array(None, dtype=object)
transmitter_waveform_type
(n_transmitter)
<U9
'trapezoid'
grid_mapping :
spatial_ref
array(['trapezoid'], dtype='<U9')
transmitter_waveform_current
(waveform_time)
float64
0.0 1.0 1.0 0.0
valid_range :
[0. 1.]
grid_mapping :
spatial_ref
array([0., 1., 1., 0.])
transmitter_current_scale_factor
(n_transmitter)
float64
1.0
valid_range :
[1. 1.]
grid_mapping :
spatial_ref
array([1.])
transmitter_peak_current
(n_transmitter)
float64
20.0
valid_range :
[20. 20.]
grid_mapping :
spatial_ref
array([20.])
transmitter_moment
(n_transmitter)
float64
94.42
valid_range :
[94.42 94.42]
grid_mapping :
spatial_ref
array([94.42])
transmitter_base_frequency
(n_transmitter)
float64
90.0
valid_range :
[90. 90.]
grid_mapping :
spatial_ref
array([90.])
transmitter_on_time
(n_transmitter)
float64
0.002769
valid_range :
[0.00276878 0.00276878]
grid_mapping :
spatial_ref
array([0.00276878])
transmitter_off_time
(n_transmitter)
float64
0.002787
valid_range :
[0.00278678 0.00278678]
grid_mapping :
spatial_ref
array([0.00278678])
transmitter_orientation
(n_transmitter)
<U1
'z'
grid_mapping :
spatial_ref
array(['z'], dtype='<U1')
transmitter_height
(n_transmitter)
float64
1.0
valid_range :
[1. 1.]
grid_mapping :
spatial_ref
array([1.])
receiver_label
(n_receiver)
<U1
'x' 'y' 'z'
grid_mapping :
spatial_ref
array(['x', 'y', 'z'], dtype='<U1')
receiver_orientation
(n_receiver)
<U1
'x' 'y' 'z'
grid_mapping :
spatial_ref
array(['x', 'y', 'z'], dtype='<U1')
receiver_coil_low_pass_filter
(n_receiver)
float64
1e+05 1e+05 1e+05
valid_range :
[100000. 100000.]
grid_mapping :
spatial_ref
array([100000., 100000., 100000.])
receiver_instrument_low_pass_filter
(n_receiver)
float64
2.5e+05 2.5e+05 2.5e+05
valid_range :
[250000. 250000.]
grid_mapping :
spatial_ref
array([250000., 250000., 250000.])
receiver_area
(n_receiver)
float64
200.0 200.0 200.0
valid_range :
[200. 200.]
grid_mapping :
spatial_ref
array([200., 200., 200.])
receiver_delay_time
(n_receiver)
float64
4.58e-06 4.58e-06 4.58e-06
valid_range :
[4.58e-06 4.58e-06]
grid_mapping :
spatial_ref
array([4.58e-06, 4.58e-06, 4.58e-06])
receiver_height
(n_receiver)
float64
1.75 1.75 1.75
valid_range :
[1.75 1.75]
grid_mapping :
spatial_ref
array([1.75, 1.75, 1.75])
receiver_gain
(n_receiver)
int64
10 10 10
valid_range :
[10. 10.]
grid_mapping :
spatial_ref
array([10, 10, 10])
component_label
(n_component)
<U3
'z_x' 'z_y' 'z_z'
grid_mapping :
spatial_ref
array(['z_x', 'z_y', 'z_z'], dtype='<U3')
component_transmitters
(n_component)
<U1
'z' 'z' 'z'
grid_mapping :
spatial_ref
array(['z', 'z', 'z'], dtype='<U1')
component_receivers
(n_component)
<U1
'x' 'y' 'z'
grid_mapping :
spatial_ref
array(['x', 'y', 'z'], dtype='<U1')
component_sample_rate
(n_component)
float64
1.0 1.0 1.0
valid_range :
[1. 1.]
grid_mapping :
spatial_ref
array([1., 1., 1.])
component_txrx_dx
(n_component)
float64
-10.0 -10.0 -10.0
valid_range :
[-10. -10.]
grid_mapping :
spatial_ref
array([-10., -10., -10.])
component_txrx_dy
(n_component)
float64
0.0 0.0 0.0
valid_range :
[0. 0.]
grid_mapping :
spatial_ref
array([0., 0., 0.])
component_txrx_dz
(n_component)
float64
-0.75 -0.75 -0.75
valid_range :
[-0.75 -0.75]
grid_mapping :
spatial_ref
array([-0.75, -0.75, -0.75])
component_data_type
(n_component)
<U4
'dBdt' 'dBdt' 'dBdt'
grid_mapping :
spatial_ref
array(['dBdt', 'dBdt', 'dBdt'], dtype='<U4')
component_gate_times
(n_component)
<U10
'gate_times' ... 'gate_times'
grid_mapping :
spatial_ref
array(['gate_times', 'gate_times', 'gate_times'], dtype='<U10')
sample_rate
()
object
None
units :
s
grid_mapping :
spatial_ref
array(None, dtype=object)
Attributes: (12)
type :
system
mode :
ground
method :
electromagnetic
submethod :
time domain
instrument :
loupe
name :
loupe_system
data_normalized :
True
reference_frame :
right-handed positive down
sample_rate :
0.1
digitization_frequency :
504000.0
stacks :
360
powerline_frequency :
60.0
Dimensions:
- index: 2474
- gate_times: 23
Coordinates: (6)
- spatial_ref
  ()
  float64
  0.0
  crs_wkt :
  PROJCRS["WGS 84 / UTM zone 16N",BASEGEOGCRS["WGS 84",ENSEMBLE["World Geodetic System 1984 ensemble",MEMBER["World Geodetic System 1984 (Transit)"],MEMBER["World Geodetic System 1984 (G730)"],MEMBER["World Geodetic System 1984 (G873)"],MEMBER["World Geodetic System 1984 (G1150)"],MEMBER["World Geodetic System 1984 (G1674)"],MEMBER["World Geodetic System 1984 (G1762)"],MEMBER["World Geodetic System 1984 (G2139)"],MEMBER["World Geodetic System 1984 (G2296)"],ELLIPSOID["WGS 84",6378137,298.257223563,LENGTHUNIT["metre",1]],ENSEMBLEACCURACY[2.0]],PRIMEM["Greenwich",0,ANGLEUNIT["degree",0.0174532925199433]],ID["EPSG",4326]],CONVERSION["UTM zone 16N",METHOD["Transverse Mercator",ID["EPSG",9807]],PARAMETER["Latitude of natural origin",0,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8801]],PARAMETER["Longitude of natural origin",-87,ANGLEUNIT["degree",0.0174532925199433],ID["EPSG",8802]],PARAMETER["Scale factor at natural origin",0.9996,SCALEUNIT["unity",1],ID["EPSG",8805]],PARAMETER["False easting",500000,LENGTHUNIT["metre",1],ID["EPSG",8806]],PARAMETER["False northing",0,LENGTHUNIT["metre",1],ID["EPSG",8807]]],CS[Cartesian,2],AXIS["(E)",east,ORDER[1],LENGTHUNIT["metre",1]],AXIS["(N)",north,ORDER[2],LENGTHUNIT["metre",1]],USAGE[SCOPE["Navigation and medium accuracy spatial referencing."],AREA["Between 90°W and 84°W, northern hemisphere between equator and 84°N, onshore and offshore. Belize. Canada - Manitoba; Nunavut; Ontario. Costa Rica. Cuba. Ecuador - Galapagos. El Salvador. Guatemala. Honduras. Mexico. Nicaragua. United States (USA)."],BBOX[0,-90,84,-84]],ID["EPSG",32616]]
  semi_major_axis :
  6378137.0
  semi_minor_axis :
  6356752.314245179
  inverse_flattening :
  298.257223563
  reference_ellipsoid_name :
  WGS 84
  longitude_of_prime_meridian :
  0.0
  prime_meridian_name :
  Greenwich
  geographic_crs_name :
  WGS 84
  horizontal_datum_name :
  World Geodetic System 1984 ensemble
  projected_crs_name :
  WGS 84 / UTM zone 16N
  grid_mapping_name :
  transverse_mercator
  latitude_of_projection_origin :
  0.0
  longitude_of_central_meridian :
  -87.0
  false_easting :
  500000.0
  false_northing :
  0.0
  scale_factor_at_central_meridian :
  0.9996
  authority :
  EPSG
  wkid :
  32616
```
array(0.)
```
- index
  (index)
  int32
  0 1 2 3 4 ... 2470 2471 2472 2473
  standard_name :
  index
  long_name :
  Index of individual data points
  units :
  not_defined
  null_value :
  not_defined
  valid_range :
  [ 0. 2473.]
  grid_mapping :
  spatial_ref
```
array([   0,    1,    2, ..., 2471, 2472, 2473], shape=(2474,), dtype=int32)
```
- x
  (index)
  float64
  5.248e+05 5.248e+05 ... 5.246e+05
  standard_name :
  projection_x_coordinate
  long_name :
  (m) Calculated reading position easting (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  axis :
  X
  valid_range :
  [524640.4 524825.1]
  grid_mapping :
  spatial_ref
```
array([524825.1, 524825. , 524825. , ..., 524644.4, 524644.6, 524644.8],
      shape=(2474,))
```
- y
  (index)
  float64
  4.583e+06 4.583e+06 ... 4.583e+06
  standard_name :
  projection_y_coordinate
  long_name :
  (m) Calculated reading position northing (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  axis :
  Y
  valid_range :
  [4582888.5 4583204.6]
  grid_mapping :
  spatial_ref
```
array([4583153. , 4583153. , 4583153. , ..., 4583202.7, 4583203.7,
       4583204.6], shape=(2474,))
```
- z
  (index)
  float64
  211.5 211.5 211.5 ... 211.1 211.1
  standard_name :
  z
  long_name :
  (m) Calculated reading position height above MSL (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  axis :
  Z
  positive :
  up
  datum :
  ground_surface
  valid_range :
  [210.1 215.1]
  grid_mapping :
  spatial_ref
```
array([211.5, 211.5, 211.5, ..., 211. , 211.1, 211.1], shape=(2474,))
```
- gate_times
  (gate_times)
  float64
  1.297e-05 1.495e-05 ... 0.002183
  standard_name :
  gate_times
  long_name :
  receiver gate times
  units :
  seconds
  null_value :
  not_defined
  valid_range :
  [1.2965e-05 2.1826e-03]
  grid_mapping :
  spatial_ref
  bounds :
  gate_times_bnds
```
array([1.2965e-05, 1.4955e-05, 1.6935e-05, 1.8920e-05, 2.0905e-05, 2.4870e-05,
       3.0825e-05, 3.8760e-05, 4.8685e-05, 6.2570e-05, 7.8445e-05, 1.0226e-04,
       1.3400e-04, 1.7368e-04, 2.2924e-04, 3.0265e-04, 3.9987e-04, 5.3083e-04,
       7.0245e-04, 9.3261e-04, 1.2372e-03, 1.6429e-03, 2.1826e-03])
```
Inherited coordinates: (0)
Data variables: (45)
- fid
  (index)
  object
  '1' '2' '3' ... '2962' '2963'
  standard_name :
  fid
  long_name :
  Unique reading identifier
  null_value :
  not_defined
  units :
  not_defined
  grid_mapping :
  spatial_ref
```
array(['1', '2', '3', ..., '2961', '2962', '2963'],
      shape=(2474,), dtype=object)
```
- acq
  (index)
  float64
  1.0 1.0 1.0 1.0 ... 6.0 6.0 6.0 6.0
  standard_name :
  acq
  long_name :
  Acquire index, this is incremented each time the user presses the acquire button
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [1. 6.]
  grid_mapping :
  spatial_ref
```
array([1., 1., 1., ..., 6., 6., 6.], shape=(2474,))
```
- acq_rdg
  (index)
  float64
  0.0 1.0 2.0 ... 424.0 425.0 426.0
  standard_name :
  acq_rdg
  long_name :
  Reading index, for a particular acquire, reset to 0 for each acquire
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [ 0. 508.]
  grid_mapping :
  spatial_ref
```
array([  0.,   1.,   2., ..., 424., 425., 426.], shape=(2474,))
```
- acq_time
  (index)
  object
  '20230808T175252.504075397Z' ......
  standard_name :
  acq_time
  long_name :
  (UTC ISO-8601) Time for when the raw data started to be acquired, matches raw file name
  null_value :
  not_defined
  units :
  not_defined
  grid_mapping :
  spatial_ref
```
array(['20230808T175252.504075397Z', '20230808T175252.504075397Z',
       '20230808T175252.504075397Z', ..., '20230808T184718.299388889Z',
       '20230808T184718.299388889Z', '20230808T184718.299388889Z'],
      shape=(2474,), dtype=object)
```
- time
  (index)
  object
  '20230808T175253.000000000Z' ......
  standard_name :
  time
  long_name :
  (UTC ISO-8601) Time of the first sample in the stack
  null_value :
  not_defined
  units :
  not_defined
  grid_mapping :
  spatial_ref
```
array(['20230808T175253.000000000Z', '20230808T175254.000000000Z',
       '20230808T175255.000000000Z', ..., '20230808T185423.000000000Z',
       '20230808T185424.000000000Z', '20230808T185425.000000000Z'],
      shape=(2474,), dtype=object)
```
- ts
  (index)
  float64
  1.692e+09 1.692e+09 ... 1.692e+09
  standard_name :
  ts
  long_name :
  (UTC Linux) Time of the first sample in the stack
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [1.69151717e+09 1.69152086e+09]
  grid_mapping :
  spatial_ref
```
array([1.69151717e+09, 1.69151717e+09, 1.69151718e+09, ...,
       1.69152086e+09, 1.69152086e+09, 1.69152086e+09], shape=(2474,))
```
- east
  (index)
  float64
  5.248e+05 5.248e+05 ... 5.246e+05
  standard_name :
  east
  long_name :
  (m) Calculated reading position easting (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  axis :
  x
  valid_range :
  [524640.4 524825.1]
  grid_mapping :
  spatial_ref
```
array([524825.1, 524825. , 524825. , ..., 524644.4, 524644.6, 524644.8],
      shape=(2474,))
```
- north
  (index)
  float64
  4.583e+06 4.583e+06 ... 4.583e+06
  standard_name :
  north
  long_name :
  (m) Calculated reading position northing (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  axis :
  y
  valid_range :
  [4582888.5 4583204.6]
  grid_mapping :
  spatial_ref
```
array([4583153. , 4583153. , 4583153. , ..., 4583202.7, 4583203.7,
       4583204.6], shape=(2474,))
```
- height
  (index)
  float64
  211.5 211.5 211.5 ... 211.1 211.1
  standard_name :
  height
  long_name :
  (m) Calculated reading position height above MSL (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  axis :
  z
  positive :
  up
  datum :
  ground_surface
  valid_range :
  [210.1 215.1]
  grid_mapping :
  spatial_ref
```
array([211.5, 211.5, 211.5, ..., 211. , 211.1, 211.1], shape=(2474,))
```
- gps_time
  (index)
  object
  '20230808T175254.000000000Z' ......
  standard_name :
  gps_time
  long_name :
  (UTC ISO-8601) Timestamp of GPS antenna position
  null_value :
  not_defined
  units :
  not_defined
  grid_mapping :
  spatial_ref
```
array(['20230808T175254.000000000Z', '20230808T175255.000000000Z',
       '20230808T175256.000000000Z', ..., '20230808T185424.000000000Z',
       '20230808T185425.000000000Z', '20230808T185426.000000000Z'],
      shape=(2474,), dtype=object)
```
- gps_east
  (index)
  float64
  5.248e+05 5.248e+05 ... 5.246e+05
  standard_name :
  gps_east
  long_name :
  (m) GPS antenna position easting (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [524639.3 524822.2]
  grid_mapping :
  spatial_ref
```
array([524822.2, 524822.1, 524822. , ..., 524645.7, 524646. , 524646.3],
      shape=(2474,))
```
- gps_north
  (index)
  float64
  4.583e+06 4.583e+06 ... 4.583e+06
  standard_name :
  gps_north
  long_name :
  (m) GPS antenna position northing (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [4582886.5 4583209.9]
  grid_mapping :
  spatial_ref
```
array([4583149. , 4583148.9, 4583148.9, ..., 4583208. , 4583209. ,
       4583209.9], shape=(2474,))
```
- gps_height
  (index)
  float64
  213.8 213.9 213.9 ... 211.6 211.6
  standard_name :
  gps_height
  long_name :
  (m) GPS antenna position height above MSL (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [210.6 216.1]
  grid_mapping :
  spatial_ref
```
array([213.8, 213.9, 213.9, ..., 211.6, 211.6, 211.6], shape=(2474,))
```
- tx_east
  (index)
  float64
  5.248e+05 5.248e+05 ... 5.246e+05
  standard_name :
  tx_east
  long_name :
  (m) Calculated TX centre position easting (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [524639.3 524822.5]
  grid_mapping :
  spatial_ref
```
array([524822.5, 524822.5, 524822.4, ..., 524645.6, 524645.8, 524646.1],
      shape=(2474,))
```
- tx_north
  (index)
  float64
  4.583e+06 4.583e+06 ... 4.583e+06
  standard_name :
  tx_north
  long_name :
  (m) Calculated TX centre position northing (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [4582887. 4583209.4]
  grid_mapping :
  spatial_ref
```
array([4583149. , 4583149. , 4583149. , ..., 4583207.5, 4583208.5,
       4583209.4], shape=(2474,))
```
- tx_height
  (index)
  float64
  213.5 213.4 213.3 ... 210.8 210.8
  standard_name :
  tx_height
  long_name :
  (m) Calculated TX centre position height above MSL (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [209.8 215.3]
  grid_mapping :
  spatial_ref
```
array([213.5, 213.4, 213.3, ..., 210.8, 210.8, 210.8], shape=(2474,))
```
- rx_east
  (index)
  float64
  5.248e+05 5.248e+05 ... 5.246e+05
  standard_name :
  rx_east
  long_name :
  (m) Calculated RX centre position easting (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [524639.4 524827.7]
  grid_mapping :
  spatial_ref
```
array([524827.7, 524827.6, 524827.6, ..., 524643.3, 524643.4, 524643.5],
      shape=(2474,))
```
- rx_north
  (index)
  float64
  4.583e+06 4.583e+06 ... 4.583e+06
  standard_name :
  rx_north
  long_name :
  (m) Calculated RX centre position northing (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [4582883.8 4583199.8]
  grid_mapping :
  spatial_ref
```
array([4583157. , 4583156.9, 4583156.9, ..., 4583197.8, 4583198.8,
       4583199.8], shape=(2474,))
```
- rx_height
  (index)
  float64
  209.6 209.6 209.6 ... 211.4 211.4
  standard_name :
  rx_height
  long_name :
  (m) Calculated RX centre position height above MSL (in selected GRID)
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [209.6 215.5]
  grid_mapping :
  spatial_ref
```
array([209.6, 209.6, 209.6, ..., 211.3, 211.4, 211.4], shape=(2474,))
```
- x_adc
  (index)
  float64
  1.1 1.1 1.1 1.1 ... 1.1 1.1 1.1 1.1
  standard_name :
  x_adc
  long_name :
  (group.channel) Receiver hardware channel identification
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [1.1 1.1]
  grid_mapping :
  spatial_ref
```
array([1.1, 1.1, 1.1, ..., 1.1, 1.1, 1.1], shape=(2474,))
```
- y_adc
  (index)
  float64
  1.2 1.2 1.2 1.2 ... 1.2 1.2 1.2 1.2
  standard_name :
  y_adc
  long_name :
  (group.channel) Receiver hardware channel identification
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [1.2 1.2]
  grid_mapping :
  spatial_ref
```
array([1.2, 1.2, 1.2, ..., 1.2, 1.2, 1.2], shape=(2474,))
```
- z_adc
  (index)
  float64
  1.3 1.3 1.3 1.3 ... 1.3 1.3 1.3 1.3
  standard_name :
  z_adc
  long_name :
  (group.channel) Receiver hardware channel identification
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [1.3 1.3]
  grid_mapping :
  spatial_ref
```
array([1.3, 1.3, 1.3, ..., 1.3, 1.3, 1.3], shape=(2474,))
```
- x_c
  (index)
  object
  'X' 'X' 'X' 'X' ... 'X' 'X' 'X' 'X'
  standard_name :
  x_c
  long_name :
  Sensor axis component
  null_value :
  not_defined
  units :
  not_defined
  grid_mapping :
  spatial_ref
```
array(['X', 'X', 'X', ..., 'X', 'X', 'X'], shape=(2474,), dtype=object)
```
- y_c
  (index)
  object
  'Y' 'Y' 'Y' 'Y' ... 'Y' 'Y' 'Y' 'Y'
  standard_name :
  y_c
  long_name :
  Sensor axis component
  null_value :
  not_defined
  units :
  not_defined
  grid_mapping :
  spatial_ref
```
array(['Y', 'Y', 'Y', ..., 'Y', 'Y', 'Y'], shape=(2474,), dtype=object)
```
- z_c
  (index)
  object
  'Z' 'Z' 'Z' 'Z' ... 'Z' 'Z' 'Z' 'Z'
  standard_name :
  z_c
  long_name :
  Sensor axis component
  null_value :
  not_defined
  units :
  not_defined
  grid_mapping :
  spatial_ref
```
array(['Z', 'Z', 'Z', ..., 'Z', 'Z', 'Z'], shape=(2474,), dtype=object)
```
- vlf_filter
  (index)
  object
  'NML4,NAA,NLK' ... 'NML4,NAA,NLK'
  standard_name :
  vlf_filter
  long_name :
  List of VLF filters applied to the data
  null_value :
  not_defined
  units :
  not_defined
  grid_mapping :
  spatial_ref
```
array(['NML4,NAA,NLK', 'NML4,NAA,NLK', 'NML4,NAA,NLK', ...,
       'NML4,NAA,NLK', 'NML4,NAA,NLK', 'NML4,NAA,NLK'],
      shape=(2474,), dtype=object)
```
- x_dc_offset
  (index)
  float64
  0.0001225 -6.476e-05 ... 0.0003983
  standard_name :
  x_dc_offset
  long_name :
  (V) Measured DC voltage offset of the receiver hardware channel
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-0.00424875 0.00582003]
  grid_mapping :
  spatial_ref
```
array([ 1.22502012e-04, -6.47628917e-05,  3.71596925e-05, ...,
       -5.24712125e-04,  1.85908540e-05,  3.98293323e-04], shape=(2474,))
```
- y_dc_offset
  (index)
  float64
  -0.001267 -0.001414 ... -0.002835
  standard_name :
  y_dc_offset
  long_name :
  (V) Measured DC voltage offset of the receiver hardware channel
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-0.00596561 0.00258175]
  grid_mapping :
  spatial_ref
```
array([-0.00126698, -0.00141366, -0.00140542, ..., -0.00254054,
       -0.00226911, -0.00283487], shape=(2474,))
```
- z_dc_offset
  (index)
  float64
  0.001206 0.001324 ... 0.00212
  standard_name :
  z_dc_offset
  long_name :
  (V) Measured DC voltage offset of the receiver hardware channel
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-0.00133355 0.0054299 ]
  grid_mapping :
  spatial_ref
```
array([0.00120597, 0.0013237 , 0.00127483, ..., 0.00178339, 0.00204642,
       0.0021202 ], shape=(2474,))
```
- x_primary
  (index)
  float64
  5.749e+03 5.066e+03 ... 1.862e+03
  standard_name :
  x_primary
  long_name :
  (UNITS) Calculated primary field from the stack
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-7340.56369004 38197.63482305]
  grid_mapping :
  spatial_ref
```
array([5748.6329444 , 5065.67632182, 4567.6176848 , ..., 1686.41533602,
       1577.76982472, 1862.37963227], shape=(2474,))
```
- y_primary
  (index)
  float64
  -1.073e+03 -340.6 ... 733.2 884.4
  standard_name :
  y_primary
  long_name :
  (UNITS) Calculated primary field from the stack
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-8408.70352847 48999.10690608]
  grid_mapping :
  spatial_ref
```
array([-1072.76504299,  -340.64204659,  -154.80896945, ...,
         959.27368163,   733.2011728 ,   884.36768078], shape=(2474,))
```
- z_primary
  (index)
  float64
  -1.035e+04 ... -9.573e+03
  standard_name :
  z_primary
  long_name :
  (UNITS) Calculated primary field from the stack
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-50720.92069094 -7060.07734103]
  grid_mapping :
  spatial_ref
```
array([-10354.9061196 , -10658.4502775 , -10871.73142006, ...,
        -8946.93568754,  -9249.66406757,  -9572.54815111], shape=(2474,))
```
- x_noise
  (index)
  float64
  1.925e-05 1.718e-05 ... 1.131e-05
  standard_name :
  x_noise
  long_name :
  (UNITS) Calculated offtime standard deviation amplitude
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [8.53896293e-06 1.30758177e-04]
  grid_mapping :
  spatial_ref
```
array([1.92478441e-05, 1.71837894e-05, 1.20049866e-05, ...,
       1.48871272e-05, 1.28631911e-05, 1.13137058e-05], shape=(2474,))
```
- y_noise
  (index)
  float64
  3.761e-05 3.352e-05 ... 2.042e-05
  standard_name :
  y_noise
  long_name :
  (UNITS) Calculated offtime standard deviation amplitude
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [7.81948493e-06 1.43676881e-04]
  grid_mapping :
  spatial_ref
```
array([3.76140510e-05, 3.35244652e-05, 1.38487194e-05, ...,
       2.73998294e-05, 2.93794713e-05, 2.04197631e-05], shape=(2474,))
```
- z_noise
  (index)
  float64
  7.735e-06 7.632e-06 ... 7.101e-06
  standard_name :
  z_noise
  long_name :
  (UNITS) Calculated offtime standard deviation amplitude
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [5.66649012e-06 2.19859912e-05]
  grid_mapping :
  spatial_ref
```
array([7.73491566e-06, 7.63164543e-06, 6.24645382e-06, ...,
       8.04470222e-06, 7.81372909e-06, 7.10093547e-06], shape=(2474,))
```
- x_powerampl
  (index)
  float64
  4.447e-05 4.847e-05 ... 6.736e-05
  standard_name :
  x_powerampl
  long_name :
  (UNITS) Calculated power line amplitude
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [7.16398081e-07 1.21668703e-04]
  grid_mapping :
  spatial_ref
```
array([4.44674749e-05, 4.84675737e-05, 4.43066532e-05, ...,
       6.98973325e-05, 6.25726466e-05, 6.73598241e-05], shape=(2474,))
```
- y_powerampl
  (index)
  float64
  3.528e-05 4.035e-05 ... 4.107e-05
  standard_name :
  y_powerampl
  long_name :
  (UNITS) Calculated power line amplitude
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [8.72665759e-07 1.21092706e-04]
  grid_mapping :
  spatial_ref
```
array([3.52802470e-05, 4.03539295e-05, 3.59883594e-05, ...,
       4.08483026e-05, 4.45154243e-05, 4.10658183e-05], shape=(2474,))
```
- z_powerampl
  (index)
  float64
  4.411e-05 4.739e-05 ... 6.548e-05
  standard_name :
  z_powerampl
  long_name :
  (UNITS) Calculated power line amplitude
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [1.59290256e-05 1.00851298e-04]
  grid_mapping :
  spatial_ref
```
array([4.41124453e-05, 4.73859296e-05, 4.45698238e-05, ...,
       6.25196446e-05, 6.30792217e-05, 6.54775984e-05], shape=(2474,))
```
- x_powerphase
  (index)
  float64
  -2.384 -2.266 ... 0.6481 0.6069
  standard_name :
  x_powerphase
  long_name :
  (rad) Calculated power line phase
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-3.13952093 3.14062356]
  grid_mapping :
  spatial_ref
```
array([-2.38386775, -2.26609236, -2.2974812 , ...,  0.82708581,
        0.64807687,  0.60691115], shape=(2474,))
```
- y_powerphase
  (index)
  float64
  1.006 1.07 1.008 ... -2.558 -2.693
  standard_name :
  y_powerphase
  long_name :
  (rad) Calculated power line phase
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-3.13653464 3.13973981]
  grid_mapping :
  spatial_ref
```
array([ 1.0058089 ,  1.06951257,  1.0079169 , ..., -2.71774442,
       -2.55791329, -2.69273716], shape=(2474,))
```
- z_powerphase
  (index)
  float64
  1.663 1.679 1.748 ... 0.9304 0.8736
  standard_name :
  z_powerphase
  long_name :
  (rad) Calculated power line phase
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-3.1374438 3.13980209]
  grid_mapping :
  spatial_ref
```
array([1.66258522, 1.67912437, 1.74751758, ..., 1.08099645, 0.93041364,
       0.87356582], shape=(2474,))
```
- X_CH
  (index, gate_times)
  float64
  491.5 357.4 ... 0.01203 0.001494
  standard_name :
  x_ch
  long_name :
  (UNITS) Time channel windows data
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-232.45210445 1342.5416746 ]
  grid_mapping :
  spatial_ref
```
array([[ 4.91452149e+02,  3.57444735e+02,  1.70748835e+02, ...,
        -1.63840100e-02,  9.59741855e-03, -4.61576917e-04],
       [ 4.84119969e+02,  3.50174919e+02,  1.65863356e+02, ...,
        -7.89618854e-03, -1.75374306e-04,  8.77812550e-03],
       [ 4.89865435e+02,  3.54931726e+02,  1.68517334e+02, ...,
         2.00930978e-02,  1.20076114e-02,  1.21367096e-02],
       ...,
       [ 6.06350715e+02,  4.69221895e+02,  2.35733369e+02, ...,
        -1.88727018e-02,  2.19282732e-02, -1.12125068e-02],
       [ 6.28190885e+02,  4.89688176e+02,  2.49615215e+02, ...,
        -3.40853044e-03, -9.14057373e-03,  8.78813646e-04],
       [ 6.20494158e+02,  4.79895816e+02,  2.42782373e+02, ...,
        -1.01020753e-02,  1.20319373e-02,  1.49391277e-03]],
      shape=(2474, 23))
```
- Y_CH
  (index, gate_times)
  float64
  -6.219 6.26 ... 0.02448 -0.0268
  standard_name :
  y_ch
  long_name :
  (UNITS) Time channel windows data
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-671.69123565 3745.61482216]
  grid_mapping :
  spatial_ref
```
array([[-6.21863076e+00,  6.25999264e+00,  9.56963428e+00, ...,
         2.97073856e-02,  3.83601715e-02,  1.62472346e-02],
       [-2.51476677e+00,  8.29366205e+00,  9.96589274e+00, ...,
         2.91719560e-02,  6.02595529e-02,  1.57731374e-02],
       [-4.74262943e+00,  5.24536477e+00,  7.75696030e+00, ...,
        -8.35364178e-03,  3.39979473e-02,  2.60233977e-02],
       ...,
       [ 3.09063349e+01, -2.39323686e+01, -2.19494663e+01, ...,
        -1.87308078e-02,  8.83365510e-02,  1.65316913e-02],
       [ 5.61396173e+01, -4.98772404e+00, -1.28747873e+01, ...,
        -3.12896972e-02, -1.36777100e-02, -3.16649451e-03],
       [ 5.14997597e+01, -6.53499680e+00, -1.35259271e+01, ...,
        -5.36811706e-02,  2.44820150e-02, -2.67986952e-02]],
      shape=(2474, 23))
```
- Z_CH
  (index, gate_times)
  float64
  499.8 434.7 ... 0.01548 0.01253
  standard_name :
  z_ch
  long_name :
  (UNITS) Time channel windows data
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [-17020.57927343 1260.66757955]
  grid_mapping :
  spatial_ref
```
array([[ 4.99768836e+02,  4.34719896e+02,  2.69763029e+02, ...,
         2.04351268e-03, -4.22064192e-03,  2.66078607e-03],
       [ 5.27219757e+02,  4.54222803e+02,  2.78963512e+02, ...,
        -6.16011541e-03, -4.98895610e-03,  1.09400172e-02],
       [ 5.28663002e+02,  4.56264082e+02,  2.80124553e+02, ...,
         1.49719267e-02,  3.57381153e-04,  2.50150137e-02],
       ...,
       [ 6.31191702e+02,  5.94172502e+02,  3.72933693e+02, ...,
        -6.57088371e-04, -5.55307094e-03, -6.70596632e-03],
       [ 6.01306744e+02,  5.68467074e+02,  3.59779858e+02, ...,
         1.66703024e-02, -8.36090578e-03,  4.76010970e-04],
       [ 6.15910524e+02,  5.77090899e+02,  3.64394331e+02, ...,
         9.67030048e-03,  1.54826824e-02,  1.25302578e-02]],
      shape=(2474, 23))
```
- line
  (index)
  int64
  1 1 1 1 1 1 1 1 ... 6 6 6 6 6 6 6 6
  standard_name :
  not_defined
  long_name :
  not_defined
  null_value :
  not_defined
  units :
  not_defined
  valid_range :
  [1. 6.]
  grid_mapping :
  spatial_ref
```
array([1, 1, 1, ..., 6, 6, 6], shape=(2474,))
```
Attributes: (5)
content :
raw data
comment :
This dataset includes minimally processed (raw) AEM data
type :
data
method :
electromagnetic
instrument :
loupe

Save to NetCDF file

d_out = join(data_path, 'Loupe.nc')
survey.gs.to_netcdf(d_out)

Reading back in

new_survey = gspy.open_datatree(d_out)['survey']

Plotting

plt.figure()
new_survey['data/raw_data']['height'].plot(label='height')
new_survey['data/raw_data']['tx_height'].plot(label='tx_height')
new_survey['data/raw_data']['rx_height'].plot(label='rx_height')
plt.tight_layout()
plt.legend()

plt.show()

Total running time of the script: (0 minutes 0.396 seconds)

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