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DOC: MaxNLocator and contour/contourf doc update (replaces #16428) #16534

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Merged
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Mar 2, 2020
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DOC: MaxNLocator and contour/contourf doc update (replaces #16428) #16534

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6 changes: 4 additions & 2 deletions lib/matplotlib/contour.py
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Expand Up @@ -1612,8 +1612,10 @@ def _initialize_x_y(self, z):
levels : int or array-like, optional
Determines the number and positions of the contour lines / regions.

If an int *n*, use *n* data intervals; i.e. draw *n+1* contour
lines. The level heights are automatically chosen.
If an int *n*, use an algorithm
(see `~matplotlib.ticker.MaxNLocator`) that tries to provide
no more than *n+1* "nice" contour levels between vmin and vmax.
The level heights are automatically chosen.

If array-like, draw contour lines at the specified levels.
The values must be in increasing order.
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3 changes: 2 additions & 1 deletion lib/matplotlib/ticker.py
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Expand Up @@ -1991,7 +1991,8 @@ def ge(self, x):

class MaxNLocator(Locator):
"""
Select no more than N intervals at nice locations.
Find nice tick locations with no more than N being within the view limits.
Locations beyond the limits are added to support autoscaling.
"""
default_params = dict(nbins=10,
steps=None,
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