[pdal] Trouble reading projection from some 3DEP tiles

Howard Butler howard at hobu.co
Wed Sep 11 19:30:34 PDT 2024



> On Sep 11, 2024, at 1:36 PM, Jim Klassen via pdal <pdal at lists.osgeo.org> wrote:

> https://rockyweb.usgs.gov/vdelivery/Datasets/Staged/Elevation/LPC/Projects/MN_UpperMissRiver_B22/MN_UpperMissRiver_2_B22/LAZ/USGS_LPC_MN_UpperMissRiver_B22_334_5271.laz

> COMPD_CS[\"NAD83(2011) / UTM zone 15N + NAVD88 height - US Geoid Model of 2018\",PROJCS[\"NAD83(2011) / UTM zone 15N\",GEOGCS[\"NAD83(2011)\",DATUM[\"NAD83 (National Spatial Reference System 2011)\",SPHEROID[\"GRS 1980\",6378137,298.257222101,AUTHORITY[\"EPSG\",\"7019\"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY[\"EPSG\",\"1116\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"Degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9102\"]],AXIS[\"Geodetic longitude\",EAST],AXIS[\"Geodetic latitude\",NORTH],AUTHORITY[\"EPSG\",\"6318\"]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"false_easting\",500000],PARAMETER[\"false_northing\",0],PARAMETER[\"central_meridian\",-93],PARAMETER[\"scale_factor\",0.9996],PARAMETER[\"latitude_of_origin\",0],UNIT[\"Meter\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"Easting\",EAST],AXIS[\"Northing\",NORTH],AUTHORITY[\"EPSG\",\"6344\"]],VERT_CS[\"NAVD88 height - US Geoid Model of 2018\",VERT_DATUM[\"North American Vertical Datum 1988\",AUTHORITY[\"EPSG\",\"5103\"]],UNIT[\"Meter\",1,AUTHORITY[\"EPSG\",\"9001\"]],AXIS[\"Gravity-related height\",UP],AUTHORITY[\"EPSG\",\"5703\"]]]

This file has a technically invalid junky COMPD_CS defined that Even added some compensation to handle in GDAL and PROJ (note the "UTM zone 15N + NAVD88 height - US Geoid Model of 2018" bits in the name). Something about this name or its form must not match the pattern the compensation currently handles.

Howard


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