Create interpolation_methods.py

examples/images_contours_and_fields/interpolation_methods.py

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+'''
+Show all different interpolation methods for imshow
+'''
+
+import matplotlib.pyplot as plt
+import numpy as np
+
+# from the docs:
+
+# If interpolation is None, default to rc image.interpolation. See also
+# the filternorm and filterrad parameters. If interpolation is 'none', then
+# no interpolation is performed on the Agg, ps and pdf backends. Other
+# backends will fall back to 'nearest'.
+#
+# http://matplotlib.org/api/pyplot_api.html#matplotlib.pyplot.imshow
+
+methods = [None, 'none', 'nearest', 'bilinear', 'bicubic', 'spline16',
+           'spline36', 'hanning', 'hamming', 'hermite', 'kaiser', 'quadric',
+           'catrom', 'gaussian', 'bessel', 'mitchell', 'sinc', 'lanczos']
+
+grid = np.random.rand(4, 4)
+
+fig, ax = plt.subplots(3, 6, figsize=(12, 6),
+                       subplot_kw={'xticks': [], 'yticks': []})
+
+fig.subplots_adjust(hspace=0.3, wspace=0.05)
+
+ax = ax.ravel()
+
+for ax, interp_method in zip(axes, methods):
+    ax[n].imshow(grid, interpolation=interp)
+    ax[n].set_title(interp)
+
+plt.show()