BUILT-IN MATHEMATICA SYMBOL
PlotPoints
PlotPoints
is an option for plotting functions that specifies how many initial sample points to use.
- With a single variable, PlotPoints->n specifies the total number of initial sample points to use.
- With more than one variable, PlotPoints->n specifies that n initial points should be used in each direction.
- PlotPoints->{n1, n2, ...} specifies different numbers of initial sample points for each successive direction.
- The initial sample points are usually equally spaced.
- Adaptive procedures controlled by MaxRecursion are used to choose more sample points.
Use 10 points in each direction:
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MaxRecursion will cause additional sampling beyond the initial 10 points:
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Use 50 points along the 
direction:
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Use different numbers of points for different variables:
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