DOC: Adding release notes for v0.19

.circleci/config.yml

@@ -32,7 +32,7 @@ deps-run: &deps-install
   command: |
     conda install -n test-environment --quiet \
         cython \
-        matplotlib \
+        'matplotlib>3.3' \
         numpy \
         owslib \
         pillow \

docs/source/_static/version_switch.js

@@ -5,7 +5,8 @@
   'use strict';
 
   var all_versions = {
-    'latest': '0.18',
+    'latest': '0.19',
+    'v0.18': '0.18',
     'v0.17': '0.17',
     'v0.16': '0.16',
     'v0.15': '0.15',

docs/source/conf.py

@@ -112,6 +112,7 @@
     'backreferences_dir': '../build/backrefs',
     'expected_failing_examples': expected_failing_examples,
     'subsection_order': subsection_order,
+    'matplotlib_animations': True,
 }
 
 # The language for content autogenerated by Sphinx. Refer to documentation

docs/source/whats_new.rst

@@ -1,3 +1,86 @@
+What's New in cartopy 0.19
+==========================
+
+:Release: 0.19.0
+:Date: XXX
+
+For a full list of included Pull Requests and closed Issues, please see the
+`0.19 milestone <https://github.com/SciTools/cartopy/milestone/27>`_.
+
+Features
+--------
+
+* Thomas Grainger restored PEP-517 support to improve installations.
+  (:pull:`1681`)
+
+* @emsterr added the ability to style bounding boxes of labels. (:pull:`1669`)
+
+* Adrien Berchet added the ability to cache downloaded image tiles.
+  (:pull:`1533`)
+
+* Greg Lucas changed the vector interpolations to be strictly in the
+  source coordinates, which removed some erroneous extrapolations.
+  (:pull:`1636`)
+
+* Giacomo Caria added an option to remove the cardinal direction labels
+  from the axes. (:pull:`1662`)
+
+* Greg Lucas added the ability to update data within a pcolormesh plot
+  using `set_array()` to enable animations of the fields. (:pull:`1496`)
+  Liam Bindle extended this capability to update the color limits
+  (:pull:`1655`) and Sebastian David Eastham fixed the return values when
+  `get_array()` was called (:pull:`1656`)
+
+.. figure:: gallery/miscellanea/images/sphx_glr_animate_surface_001.gif
+   :target: gallery/miscellanea/animate_surface.html
+   :align: center
+
+* @htonchia and Greg Lucas fixed an issue with large cells appearing in
+  pcolormesh plots. (:pull:`1622`)
+
+* Philippe Miron added an example to demonstrate how to label specific
+  sides of the plot. (:pull:`1593`)
+
+* Greg Lucas added the option to restrict the limits of gridlines. (:pull:`1574`)
+
+* Kyle Penner fixed extrapolations using an alpha-channel in imshow().
+  (:pull:`1582`)
+
+* Valentin Iovene added pkg-config instructions to help with installations on
+  MacOS. (:pull:`1596`)
+
+* Luke Davis updated the tight bbox calculations to include the gridliner labels.
+  (:pull:`1355`)
+
+* Luke Davis fixed the label padding for gridliners to use points which makes
+  the rendered screen image appear the same as the printed image now.
+  (:pull:`1556`)
+
+* Daryl Herzmann added the ability to make Hexbin plots. (:pull:`1542`)
+
+    .. plot::
+       :width: 400pt
+
+        import matplotlib.pyplot as plt
+        import numpy as np
+        import cartopy.crs as ccrs
+
+        fig = plt.figure(figsize=(10, 5))
+        ax = plt.axes(projection=ccrs.Robinson())
+        ax.coastlines()
+
+        x, y = np.meshgrid(np.arange(-179, 181), np.arange(-90, 91))
+        data = np.sqrt(x**2 + y**2)
+        ax.hexbin(x.flatten(), y.flatten(), C=data.flatten(),
+                  gridsize=20, transform=ccrs.PlateCarree())
+        plt.show()
+
+* Kyle Penner fixed image plotting when a 2D alpha array is input. (:pull:`1543`)
+
+* Elliott Sales de Andrade and Hugo van Kemenade removed Python 2 support.
+  (:pull:`1516`, :pull:`1517`, :pull:`1540`, :pull:`1544`, and :pull:`1547`)
+
+
 What's New in cartopy 0.18
 ==========================
 

examples/miscellanea/animate_surface.py

@@ -0,0 +1,38 @@
+"""
+Animating a gridded surface
+---------------------------
+
+This example demonstrates how to animate
+gridded data using `pcolormesh()`.
+"""
+import matplotlib.pyplot as plt
+from matplotlib.animation import FuncAnimation
+import numpy as np
+import cartopy.crs as ccrs
+
+fig = plt.figure(figsize=(10, 5))
+ax = plt.axes(projection=ccrs.Robinson())
+ax.set_global()
+ax.coastlines()
+
+x = np.linspace(-80, 80)
+xs, ys = np.meshgrid(2 * x + 180, x)
+zs = xs + ys
+vmin, vmax = np.min(zs), np.max(zs)
+mesh = ax.pcolormesh(xs, ys, np.zeros_like(zs), transform=ccrs.PlateCarree(),
+                     shading='auto', vmin=vmin, vmax=vmax)
+
+n = 10
+
+
+def update_mesh(t):
+    mesh.set_array(zs.ravel() * t)
+
+
+ts = [i / n for i in range(n)]
+# Go back to the start to make it a smooth repeat
+ts += ts[::-1]
+ani = FuncAnimation(fig, update_mesh, frames=ts,
+                    interval=100)
+
+plt.show()