:orphan:



.. _sphx_glr_sample_data:

.. _sample_data:

Sample Data
===========

Harmonica provides some sample data for testing through the
:mod:`harmonica.datasets` module.


Where is my data?
-----------------

The sample data files are downloaded automatically by :mod:`pooch` the first
time you load them. The files are saved to the default cache location on your
operating system. The location varies depending on your system and
configuration. We provide the :func:`harmonica.datasets.locate` function if you
need to find the data storage location on your system.

You can change the base data directory by setting the ``HARMONICA_DATA_DIR``
environment variable to a different path.


Available datasets
------------------

These are the datasets currently available:



.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="The geoid is the equipotential surface of the Earth&#x27;s gravity potential that coincides with mea...">

.. only:: html

 .. figure:: /sample_data/images/thumb/sphx_glr_earth_geoid_thumb.png
     :alt: Earth Geoid

     :ref:`sphx_glr_sample_data_earth_geoid.py`

.. raw:: html

    </div>


.. toctree::
   :hidden:

   /sample_data/earth_geoid

.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="This is the magnitude of the gravity vector of the Earth (gravitational + centrifugal) at 10 km...">

.. only:: html

 .. figure:: /sample_data/images/thumb/sphx_glr_earth_gravity_thumb.png
     :alt: Earth Gravity

     :ref:`sphx_glr_sample_data_earth_gravity.py`

.. raw:: html

    </div>


.. toctree::
   :hidden:

   /sample_data/earth_gravity

.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="The topography and bathymetry of the Earth according to the ETOPO1 model [AmanteEakins2009]_. T...">

.. only:: html

 .. figure:: /sample_data/images/thumb/sphx_glr_earth_topography_thumb.png
     :alt: Earth Topography

     :ref:`sphx_glr_sample_data_earth_topography.py`

.. raw:: html

    </div>


.. toctree::
   :hidden:

   /sample_data/earth_topography

.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="Land gravity survey performed in January 1986 within the boundaries of the Republic of South Af...">

.. only:: html

 .. figure:: /sample_data/images/thumb/sphx_glr_south_africa_gravity_thumb.png
     :alt: Land Gravity Data from South Africa

     :ref:`sphx_glr_sample_data_south_africa_gravity.py`

.. raw:: html

    </div>


.. toctree::
   :hidden:

   /sample_data/south_africa_gravity

.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="The topography and bathymetry of South Africa according to the ETOPO1 model [AmanteEakins2009]_...">

.. only:: html

 .. figure:: /sample_data/images/thumb/sphx_glr_south_africa_topography_thumb.png
     :alt: South Africa Topography

     :ref:`sphx_glr_sample_data_south_africa_topography.py`

.. raw:: html

    </div>


.. toctree::
   :hidden:

   /sample_data/south_africa_topography

.. raw:: html

    <div class="sphx-glr-thumbcontainer" tooltip="These data are a complete airborne survey of the entire Great Britain conducted between 1955 an...">

.. only:: html

 .. figure:: /sample_data/images/thumb/sphx_glr_britain_magnetic_thumb.png
     :alt: Total Field Magnetic Anomaly from Great Britain

     :ref:`sphx_glr_sample_data_britain_magnetic.py`

.. raw:: html

    </div>


.. toctree::
   :hidden:

   /sample_data/britain_magnetic
.. raw:: html

    <div class="sphx-glr-clear"></div>



.. only:: html

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

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