class MultiLineString(lines)

The MultiLineString constructor takes a sequence of line-like sequences or objects.

MultiLineString构造函数接收线性元祖序列或对象。

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A MultiLineString has zero area and non-zero length.

MultiLineString的面积为零，长度不为零。

>>> from shapely.geometry import MultiLineString
>>> coords = [((0, 0), (1, 1)), ((-1, 0), (1, 0))]
>>> lines = MultiLineString(coords)
>>> lines.area
0.0
>>> lines.length
3.4142135623730949

Its x-y bounding box is a (minx, miny, maxx, maxy) tuple.

其边界是一个元组（minx, miny, maxx, maxy）。

>>> lines.bounds
(-1.0, 0.0, 1.0, 1.0)

Its members are instances of LineString and are accessed via the geoms property or via the iterator protocol using in or list().

其成员可以通过geoms属性或通过in、list()的迭代器协议来访问。

>>> len(lines.geoms)
2
>>> pprint.pprint(list(lines.geoms))
[<shapely.geometry.linestring.LineString object at 0x...>,
 <shapely.geometry.linestring.LineString object at 0x...>]
>>> pprint.pprint(list(lines))
[<shapely.geometry.linestring.LineString object at 0x...>,
 <shapely.geometry.linestring.LineString object at 0x...>]

The constructor also accepts another instance of MultiLineString or an unordered sequence of LineString instances, thereby making copies.

构造函数也接受另一个MultiLineString的实例或LineString实例的无序序列，从而得到一个副本。

>>> MultiLineString(lines)
<shapely.geometry.multilinestring.MultiLineString object at 0x...>
>>> MultiLineString(lines.geoms)
<shapely.geometry.multilinestring.MultiLineString object at 0x...>

标签 Python-GIS, Shapely