fix subsample example to use cmap/norm by passing to image wrapper instead of as converter

Author: ksunden

examples/subsample.py

@@ -68,7 +68,7 @@ def query(
 sub = Subsample()
 cmap = mpl.colormaps["coolwarm"]
 norm = Normalize(-2.2, 2.2)
-im = ImageWrapper(sub)
+im = ImageWrapper(sub, cmap=cmap, norm=norm)
 
 fig, ax = plt.subplots()
 ax.add_artist(im)