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Commit a764e9f

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Use symbolic operator names (moveto, lineto) in contour_manual example.
It's clearer to directly use the names (or their one-letter abbreviations M/L, which are e.g. part of the svg standard) that using numeric values and then explaining the numeric values.
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‎galleries/examples/misc/contour_manual.py

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Example of displaying your own contour lines and polygons using ContourSet.
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"""
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import matplotlib.pyplot as plt
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import matplotlib.cm as cm
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from matplotlib.contour import ContourSet
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from matplotlib.path import Path
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# %%
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# Contour lines for each level are a list/tuple of polygons.
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# Multiple filled contour lines can be specified in a single list of polygon
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# vertices along with a list of vertex kinds (code types) as described in the
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# Path class. This is particularly useful for polygons with holes.
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# Here a code type of 1 is a MOVETO, and 2 is a LINETO.
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fig, ax = plt.subplots()
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filled01 = [[[0, 0], [3, 0], [3, 3], [0, 3], [1, 1], [1, 2], [2, 2], [2, 1]]]
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kinds01 = [[1, 2, 2, 2, 1, 2, 2, 2]]
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M = Path.MOVETO
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L = Path.LINETO
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kinds01 = [[M, L, L, L, M, L, L, L]]
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cs = ContourSet(ax, [0, 1], [filled01], [kinds01], filled=True)
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cbar = fig.colorbar(cs)
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