add error check for empty lidar after draping

weecology / NEON_crown_maps

Generating tree crown maps for NEON sites

MIT License

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add error check for empty lidar after draping #9

Open bw4sz opened 4 years ago

bw4sz commented 4 years ago

/orange/ewhite/NeonData/WOOD/DP1.30003.001/2017/FullSite/D09/2017_WOOD_2/L1/DiscreteLidar/ClassifiedPointCloud/NE Exception: ValueError('Cannot write empty DataFrame to file.')