search

hobuinc / usgs-lidar

AWS Entwine Point Tiles USGS LiDAR Public Dataset GitHub repo
https://registry.opendata.aws/usgs-lidar/
135 stars 14 forks source link

tile for "UT_Ogden-FEMA_2011" has incorrect XY coordinates. #9

Open mattbeckley opened 5 years ago

mattbeckley commented 5 years ago

I noticed the boundary file for this tile had incorrect XY coordinates (it plots in the Indian Ocean). I spot checked a laz file in the directory s3://usgs-lidar-public/UT_Ogden-FEMA_2011/ept-data/ and it seems like the incorrect coordinates are in those LAZ files as well.

From pdal info 6-9-32-37.laz --all :

"bbox": { "EPSG:4326": { "bbox": { "maxx": 84.87566198, "maxy": 0.0164886891, "maxz": -1799983.505, "minx": 84.87386786, "miny": 0.01633879263, "minz": -1800183.244 }, "boundary": { "coordinates" : [ [ [ 84.873867860000004, 0.016338789999999999 ], [ 84.873867860000004, 0.01648869 ], [ 84.875661980000004, 0.01648869 ], [ 84.875661980000004, 0.016338789999999999 ], [ 84.873867860000004, 0.016338789999999999 ]

jstoker74 commented 5 years ago

Hi- do you have the full name of the bad tile? I can pass it on to folks at USGS NGTOC to see if they can fix. Thanks, jason

mattbeckley commented 5 years ago

This seems to be an issue with the .ept versions of the data. I looked briefly at the laz files in:

ftp://rockyftp.cr.usgs.gov/vdelivery/Datasets/Staged/NED/LPC/projects/UT_Ogden-FEMA_2011/laz

and the XY coordinates look like they are correct UTM coordinates for the Ogden area.