Java 当我们有坐标列表时，如何在 JTS 中创建多边形？
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How to create a polygon in JTS when we have list of coordinate?
提问by Piscean
We can create a LineString using coordinates list like this:
我们可以使用坐标列表创建一个 LineString，如下所示：
Geometry g1 = new GeometryFactory().createLineString(coordinates);
How can we create a polygon using coordinates list?
我们如何使用坐标列表创建多边形？
Thanks in advance.
提前致谢。
采纳答案by Piscean
Use these line of codes:
使用这些代码行：
GeometryFactory fact = new GeometryFactory();
LinearRing linear = new GeometryFactory().createLinearRing(coordinates);
Polygon poly = new Polygon(linear, null, fact);
I hope it will help :)
我希望它会有所帮助:)
回答by Chetan Gole
Have you seen their documentation ? Take a look - http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/geom/Polygon.html
你看过他们的文档吗？看看 - http://www.vividsolutions.com/jts/javadoc/com/vividsolutions/jts/geom/Polygon.html
I think this is very much straight forward. I hope this will solve your problem.
我认为这是非常直接的。我希望这能解决你的问题。
回答by bugmenot123
The accepted answer might have still been valid (still awkward) in 2012 but nowadays you should really do it simply like this:
接受的答案在 2012 年可能仍然有效（仍然很尴尬），但现在你真的应该这样做：
// Create a GeometryFactory if you don't have one already
GeometryFactory geometryFactory = new GeometryFactory();
// Simply pass an array of Coordinate or a CoordinateSequence to its method
Polygon polygonFromCoordinates = geometryFactory.createPolygon(coordinates);
