fgdc bio bounding box altitude

[stansmith907]

The FGDC Biological extension adds a vertical component to boundingBox.

      <bounding>
        <westbc>-166.81640625</westbc>
        <eastbc>-74.00390625</eastbc>
        <northbc>71.6912927186</northbc>
        <southbc>24.0464639997</southbc>
        <boundalt>
           <altmin>0.0</altmin>
           <altmax>1000.0</altmax>
           <altunit>meters</altunit>
        </boundalt>
      </bounding>

• add altitude to bounding box in mdJson/mdTranslator
• ignore this extension

altunit is my guess as to what the FGDC tag is 'altitude units of measure'. The tag description was omitted in the FGDC Biological Extension documentation.

Dennis, can you investigate this in Metavist?