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

.. only:: html

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

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

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

.. _sphx_glr_gallery_miscellanea_axes_grid_basic.py:


Using Cartopy and AxesGrid toolkit
----------------------------------

This example demonstrates how to use cartopy `~cartopy.mpl.geoaxes.GeoAxes`
with `~mpl_toolkits.axes_grid1.axes_grid.AxesGrid` from the
:mod:`mpl_toolkits.axes_grid1`. The script constructs an ``axes_class`` kwarg
with Plate Carree projection and passes it to the
`~mpl_toolkits.axes_grid1.axes_grid.AxesGrid` instance. The
`~mpl_toolkits.axes_grid1.axes_grid.AxesGrid` built-in tick labelling
is not used, and instead a standard procedure of creating grid lines is used.
Then some fake data is plotted.

.. GENERATED FROM PYTHON SOURCE LINES 14-81



.. image-sg:: /gallery/miscellanea/images/sphx_glr_axes_grid_basic_001.png
   :alt: axes grid basic
   :srcset: /gallery/miscellanea/images/sphx_glr_axes_grid_basic_001.png
   :class: sphx-glr-single-img





.. code-block:: Python

    import matplotlib.pyplot as plt
    from mpl_toolkits.axes_grid1 import AxesGrid
    import numpy as np

    import cartopy.crs as ccrs
    from cartopy.mpl.geoaxes import GeoAxes
    from cartopy.mpl.ticker import LatitudeFormatter, LongitudeFormatter


    def sample_data_3d(shape):
        """Return `lons`, `lats`, `times` and fake `data`"""
        ntimes, nlats, nlons = shape
        lats = np.linspace(-np.pi / 2, np.pi / 2, nlats)
        lons = np.linspace(0, 2 * np.pi, nlons)
        lons, lats = np.meshgrid(lons, lats)
        wave = 0.75 * (np.sin(2 * lats) ** 8) * np.cos(4 * lons)
        mean = 0.5 * np.cos(2 * lats) * ((np.sin(2 * lats)) ** 2 + 2)

        lats = np.rad2deg(lats)
        lons = np.rad2deg(lons)
        data = wave + mean

        times = np.linspace(-1, 1, ntimes)
        new_shape = data.shape + (ntimes, )
        data = np.rollaxis(data.repeat(ntimes).reshape(new_shape), -1)
        data *= times[:, np.newaxis, np.newaxis]

        return lons, lats, times, data


    def main():
        projection = ccrs.PlateCarree()
        axes_class = (GeoAxes,
                      dict(projection=projection))

        lons, lats, times, data = sample_data_3d((6, 73, 145))

        fig = plt.figure()
        axgr = AxesGrid(fig, 111, axes_class=axes_class,
                        nrows_ncols=(3, 2),
                        axes_pad=0.6,
                        cbar_location='right',
                        cbar_mode='single',
                        cbar_pad=0.2,
                        cbar_size='3%',
                        label_mode='keep')

        for i, ax in enumerate(axgr):
            ax.coastlines()
            ax.set_xticks(np.linspace(-180, 180, 5), crs=projection)
            ax.set_yticks(np.linspace(-90, 90, 5), crs=projection)
            lon_formatter = LongitudeFormatter(zero_direction_label=True)
            lat_formatter = LatitudeFormatter()
            ax.xaxis.set_major_formatter(lon_formatter)
            ax.yaxis.set_major_formatter(lat_formatter)

            p = ax.contourf(lons, lats, data[i, ...],
                            transform=projection,
                            cmap='RdBu')

        axgr.cbar_axes[0].colorbar(p)

        plt.show()


    if __name__ == '__main__':
        main()


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

   **Total running time of the script:** (0 minutes 1.053 seconds)


.. _sphx_glr_download_gallery_miscellanea_axes_grid_basic.py:

.. only:: html

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

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

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

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

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


.. only:: html

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

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