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Improved docs for GEOSGeometry.simplify()

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Tom Dyson 2014-07-25 01:24:52 +01:00 committed by Tim Graham
parent 6508db2ff9
commit aa8bc7fa7d
1 changed files with 8 additions and 9 deletions
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17
docs/ref/contrib/gis/geos.txt
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@ -440,17 +440,16 @@ topological relationship between this geometry and the other.
.. method:: GEOSGeometry.simplify(tolerance=0.0, preserve_topology=False)
Returns a new :class:`GEOSGeometry`, simplified using the Douglas-Peucker
algorithm to the specified tolerance. A higher tolerance value implies
less points in the output. If no tolerance is tolerance provided,
it defaults to 0.
Returns a new :class:`GEOSGeometry`, simplified to the specified tolerance
using the Douglas-Peucker algorithm. A higher tolerance value implies
fewer points in the output. If no tolerance is provided, it defaults to 0.
By default, this function does not preserve topology - e.g.,
:class:`Polygon` objects can be split, collapsed into lines or disappear.
:class:`Polygon` holes can be created or disappear, and lines can cross.
By default, this function does not preserve topology. For example,
:class:`Polygon` objects can be split, be collapsed into lines, or disappear.
:class:`Polygon` holes can be created or disappear, and lines may cross.
By specifying ``preserve_topology=True``, the result will have the same
dimension and number of components as the input, however, this is
significantly slower.
dimension and number of components as the input; this is significantly
slower, however.
.. method:: GEOSGeometry.sym_difference(other)