Create interpolation_methods.py

rutj3 · rutj3 · commit cc56d0aa3641 · 2013-11-18T09:13:30.000+01:00
diff --git a/examples/api/interpolation_methods.py b/examples/api/interpolation_methods.py
@@ -0,0 +1,32 @@
+'''
+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 n, interp in enumerate(methods):
+    ax[n].imshow(grid, interpolation=interp)
+    ax[n].set_title(interp)
+
+plt.show()
