GeoServer中多边形内多个标签问题

[color=green]GeoServer在生成多边形切片时会产生重复标签[/color]
[img]http://dl.iteye.com/upload/attachment/0073/0078/c49f8aff-b5db-3129-bda7-f75903517bfb.png[/img]
[color=green]这个问题可以使用过滤器的质心功能，中心位置。[/color]
[table]
|Name|Arguments|Description|
|centroid|geometry:Geometry|Returns the centroid of the geometry. Can be often used as a label point for polygons, though there is no guarantee it will actually lie inside the geometry|
[/table]

<Rule>
  <TextSymbolizer>
    <Label><ogc:PropertyName>NAME</ogc:PropertyName></Label>
    <Fill><CssParameter name="fill">#666666</CssParameter></Fill>
    <Geometry>
      <ogc:Function name="centroid">
        <ogc:PropertyName>geom</ogc:PropertyName>
      </ogc:Function>
    </Geometry>
    <VendorOption name="spaceAround">10</VendorOption>
    <VendorOption name="autoWrap">85</VendorOption>
    <VendorOption name="group">yes</VendorOption>
  </TextSymbolizer>
</Rule>

[color=green]使用后如下效果[/color]
[img]http://dl.iteye.com/upload/attachment/0073/0080/c0b51015-6370-33e8-965b-109fe909bd84.png[/img]
[color=green]但声明时没有保证一定在多边形内部有可能出现如下效果(需要注意)：[/color][img]http://dl.iteye.com/upload/attachment/0073/0082/532e6075-a460-3486-aafb-bea3e8e9ba9b.png[/img]
转载自：https://blog.csdn.net/iteye_15538/article/details/82405010