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Range Rings

A sample map with multiple range rings, one of which is initially invisible.

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<!-- Sample map with multiple range rings,
     one of which is initially invisible. -->
         
<WxML>
  <map bgcolor="#FFFFCC">
  
    <overlay visible="true">
      <data src="Oklahoma Maps" param="County borders"/>
    </overlay>
    
    <rangeRings visible="false">
      <centerPosition latitude="35.3" longitude="-94.62"
        units="mile"/>
      <range low="20" high="60" interval="10"/>
      <lineStyle color="#999999" width="0"/>
    </rangeRings>
    
    <rangeRings>
      <centerSite network="Oklahoma Mesonet"
        site="NORM" units="nmi"/>
      <range low="20" high="100" interval="20"/>
      <lineStyle color="#CCCC33"/>
    </rangeRings>
    
    <rangeRings>
      <centerSite network="Oklahoma Mesonet"
        site="BOIS" units="km"/>
      <range low="30" high="390" interval="30"/>
      <lineStyle color="#66CCFF"/>
    </rangeRings>
    
    <rangeRings>
      <centerSite network="Oklahoma Mesonet"
        site="BIXB" units="km"/>
      <range low="0" high="300" interval="100"/>
      <lineStyle color="#CC0000"/>
    </rangeRings>
    
  </map>
</WxML>

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