.. _sphx_glr_gallery_tick_labels.py:


Tick Labels
-----------

This example demonstrates adding tick labels to maps on rectangular
projections using special tick formatters.





.. image:: /gallery/images/sphx_glr_tick_labels_001.png
    :align: center





.. code-block:: python

    import cartopy.crs as ccrs
    from cartopy.mpl.ticker import LongitudeFormatter, LatitudeFormatter
    import matplotlib.pyplot as plt


    def main():
        fig = plt.figure(figsize=(8, 10))

        # Label axes of a Plate Carree projection with a central longitude of 180:
        ax1 = fig.add_subplot(2, 1, 1,
                              projection=ccrs.PlateCarree(central_longitude=180))
        ax1.set_global()
        ax1.coastlines()
        ax1.set_xticks([0, 60, 120, 180, 240, 300, 360], crs=ccrs.PlateCarree())
        ax1.set_yticks([-90, -60, -30, 0, 30, 60, 90], crs=ccrs.PlateCarree())
        lon_formatter = LongitudeFormatter(zero_direction_label=True)
        lat_formatter = LatitudeFormatter()
        ax1.xaxis.set_major_formatter(lon_formatter)
        ax1.yaxis.set_major_formatter(lat_formatter)

        # Label axes of a Mercator projection without degree symbols in the labels
        # and formatting labels to include 1 decimal place:
        ax2 = fig.add_subplot(2, 1, 2, projection=ccrs.Mercator())
        ax2.set_global()
        ax2.coastlines()
        ax2.set_xticks([-180, -120, -60, 0, 60, 120, 180], crs=ccrs.PlateCarree())
        ax2.set_yticks([-78.5, -60, -25.5, 25.5, 60, 80], crs=ccrs.PlateCarree())
        lon_formatter = LongitudeFormatter(number_format='.1f',
                                           degree_symbol='',
                                           dateline_direction_label=True)
        lat_formatter = LatitudeFormatter(number_format='.1f',
                                          degree_symbol='')
        ax2.xaxis.set_major_formatter(lon_formatter)
        ax2.yaxis.set_major_formatter(lat_formatter)

        plt.show()


    if __name__ == '__main__':
        main()

**Total running time of the script:** ( 0 minutes  0.117 seconds)



.. container:: sphx-glr-footer


  .. container:: sphx-glr-download

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



  .. container:: sphx-glr-download

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

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

    `Generated by Sphinx-Gallery <https://sphinx-gallery.readthedocs.io>`_