
.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "examples/Creating_GS_Files/plot_aseg_tempest.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_examples_Creating_GS_Files_plot_aseg_tempest.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_examples_Creating_GS_Files_plot_aseg_tempest.py:


ASEG to NetCDF
--------------

This example demonstrates the workflow for creating a GS file from the `ASEG <https://www.aseg.org.au/sites/default/files/pdf/ASEG-GDF2-REV4.pdf>`_ file format, as well as how to add multiple associated datasets to the Survey (e.g., Tabular and Raster groups). Specifically, this AEM survey contains the following datasets:

1. Raw AEM data, from the Tempest system
2. Inverted resistivity models
3. An interpolated map of total magnetic intensity

Dataset Reference:
Minsley, B.J., James, S.R., Bedrosian, P.A., Pace, M.D., Hoogenboom, B.E., and Burton, B.L., 2021, Airborne electromagnetic, magnetic, and radiometric survey of the Mississippi Alluvial Plain, November 2019 - March 2020: U.S. Geological Survey data release, https://doi.org/10.5066/P9E44CTQ.

.. GENERATED FROM PYTHON SOURCE LINES 17-21

.. code-block:: Python

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








.. GENERATED FROM PYTHON SOURCE LINES 22-24

Convert the ASEG data to NetCDF
+++++++++++++++++++++++++++++++

.. GENERATED FROM PYTHON SOURCE LINES 26-27

Initialize the Survey

.. GENERATED FROM PYTHON SOURCE LINES 27-37

.. code-block:: Python


    # Path to example files
    data_path = "..//data_files//tempest_aseg"

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

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








.. GENERATED FROM PYTHON SOURCE LINES 38-39

1. Raw Data -

.. GENERATED FROM PYTHON SOURCE LINES 39-49

.. code-block:: Python

    data_container = survey.gs.add_container('data', **dict(content = "raw and processed data"))

    # Import raw AEM data from ASEG-format.
    # Define input data file and associated metadata file
    d_data = join(data_path, 'data//Tempest.dat')
    d_supp = join(data_path, 'data//Tempest_data_md.yml')

    # Add the raw AEM data as a tabular dataset
    rd = data_container.gs.add(key='raw_data', data_filename=d_data, metadata_file=d_supp)








.. GENERATED FROM PYTHON SOURCE LINES 50-51

2. Inverted Models

.. GENERATED FROM PYTHON SOURCE LINES 51-61

.. code-block:: Python

    model_container = survey.gs.add_container('models', **dict(content = "inverted models"))

    # Import inverted AEM models from ASEG-format.
    # Define input data file and associated metadata file
    m_data = join(data_path, 'model//Tempest_model.dat')
    m_supp = join(data_path, 'model//Tempest_model_md.yml')

    # Read model data and format as Tabular class object
    mod = model_container.gs.add(key='inverted_models', data_filename=m_data, metadata_file=m_supp, derived_from=rd)








.. GENERATED FROM PYTHON SOURCE LINES 62-63

3. Magnetic Intensity Map

.. GENERATED FROM PYTHON SOURCE LINES 63-76

.. code-block:: Python

    data_derived = data_container.gs.add_container('derived_maps', **dict(content = "derived maps"))

    # Import the magnetic data from TIF-format.
    # Define input metadata file (which contains the TIF filenames linked with desired variable names)
    r_supp = join(data_path, 'data//Tempest_raster_md.yml')

    # Read data and format as Raster class object
    data_derived.gs.add(key='maps', metadata_file = r_supp)

    # Save NetCDF file
    d_out = join(data_path, 'Tempest.nc')
    survey.gs.to_netcdf(d_out)





.. rst-class:: sphx-glr-script-out

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    format
    valid_range
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    coordinates
    _FillValue
    crs_wkt
    semi_major_axis
    semi_minor_axis
    inverse_flattening
    reference_ellipsoid_name
    longitude_of_prime_meridian
    prime_meridian_name
    geographic_crs_name
    horizontal_datum_name
    projected_crs_name
    grid_mapping_name
    standard_parallel
    latitude_of_projection_origin
    longitude_of_central_meridian
    false_easting
    false_northing
    authority
    wkid
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    long_name
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    _FillValue
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    datum
    valid_range
    grid_mapping
    type
    mode
    method
    submethod
    instrument
    uuid
    name
    structure
    data_normalized
    output_data_type
    reference_frame
    output_sample_frequency
    digitization_frequency
    _FillValue
    standard_name
    long_name
    units
    null_value
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    grid_mapping
    valid_range
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    resolution
    type
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    sample_frequency
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    content
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    coordinates
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    long_name
    units
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    grid_mapping
    coordinates
    _FillValue
    crs_wkt
    semi_major_axis
    semi_minor_axis
    inverse_flattening
    reference_ellipsoid_name
    longitude_of_prime_meridian
    prime_meridian_name
    geographic_crs_name
    horizontal_datum_name
    projected_crs_name
    grid_mapping_name
    standard_parallel
    latitude_of_projection_origin
    longitude_of_central_meridian
    false_easting
    false_northing
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.. GENERATED FROM PYTHON SOURCE LINES 77-78

Read back in the NetCDF file

.. GENERATED FROM PYTHON SOURCE LINES 78-84

.. code-block:: Python

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

    # Once the survey is read in, we can access variables like a standard xarray dataset.
    print(new_survey['data/derived_maps/maps'].magnetic_tmi)
    print(new_survey['data/derived_maps/maps']['magnetic_tmi'])





.. rst-class:: sphx-glr-script-out

 .. code-block:: none

    <xarray.DataArray 'magnetic_tmi' (y: 1212, x: 599)> Size: 6MB
    [725988 values with dtype=float64]
    Coordinates:
      * y            (y) float64 10kB 1.607e+06 1.606e+06 ... 8.808e+05 8.802e+05
      * x            (x) float64 5kB 2.928e+05 2.934e+05 ... 6.51e+05 6.516e+05
        spatial_ref  float64 8B ...
    Attributes:
        standard_name:  total_magnetic_intensity
        long_name:      Total magnetic intensity, diurnally corrected and filtered
        units:          nT
        null_value:     1.70141e+38
        valid_range:    [-17504.6640625   11490.32324219]
        grid_mapping:   spatial_ref
    <xarray.DataArray 'magnetic_tmi' (y: 1212, x: 599)> Size: 6MB
    [725988 values with dtype=float64]
    Coordinates:
      * y            (y) float64 10kB 1.607e+06 1.606e+06 ... 8.808e+05 8.802e+05
      * x            (x) float64 5kB 2.928e+05 2.934e+05 ... 6.51e+05 6.516e+05
        spatial_ref  float64 8B ...
    Attributes:
        standard_name:  total_magnetic_intensity
        long_name:      Total magnetic intensity, diurnally corrected and filtered
        units:          nT
        null_value:     1.70141e+38
        valid_range:    [-17504.6640625   11490.32324219]
        grid_mapping:   spatial_ref




.. GENERATED FROM PYTHON SOURCE LINES 85-86

Plotting

.. GENERATED FROM PYTHON SOURCE LINES 86-94

.. code-block:: Python


    # Make a scatter plot of a specific tabular variable, using GSPy's plotter
    plt.figure()
    new_survey['data']['raw_data'].gs.scatter(x='x', hue='tx_height', cmap='jet')

    # Make a 2-D map plot of a specific raster variable, using Xarrays's plotter
    plt.figure()
    new_survey['data/derived_maps/maps']['magnetic_tmi'].plot(cmap='jet', robust=True)
    # plt.show()


.. rst-class:: sphx-glr-horizontal


    *

      .. image-sg:: /examples/Creating_GS_Files/images/sphx_glr_plot_aseg_tempest_001.png
         :alt: plot aseg tempest
         :srcset: /examples/Creating_GS_Files/images/sphx_glr_plot_aseg_tempest_001.png
         :class: sphx-glr-multi-img

    *

      .. image-sg:: /examples/Creating_GS_Files/images/sphx_glr_plot_aseg_tempest_002.png
         :alt: spatial_ref = 0.0
         :srcset: /examples/Creating_GS_Files/images/sphx_glr_plot_aseg_tempest_002.png
         :class: sphx-glr-multi-img


.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    <matplotlib.collections.QuadMesh object at 0x15980c6b0>




.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 1.286 seconds)


.. _sphx_glr_download_examples_Creating_GS_Files_plot_aseg_tempest.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: plot_aseg_tempest.ipynb <plot_aseg_tempest.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: plot_aseg_tempest.py <plot_aseg_tempest.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: plot_aseg_tempest.zip <plot_aseg_tempest.zip>`


.. only:: html

 .. rst-class:: sphx-glr-signature

    `Gallery generated by Sphinx-Gallery <https://sphinx-gallery.github.io>`_
