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Improvements to JUMP K-Means Cluster integration #119

@rfecher

Description

@rfecher
  • replace querying the whole world spatially with empty or unset query
  • use count statistics instead of full table scan
  • re-use GeoWave within intermediate steps where appropriate (when using geometry in accumulo)
  • output polygon directly to GeoWave using GeoWaveOutputFormat
  • optionally you should be able to write back to the original table to enrich it with cluster ID
  • optionally you should be able to run the clustering without the polygon generation

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