pdal info cannot read apparently good las file for the Moon

Question

pdal info cannot read apparently good las file for the Moon

oleg-alexandrov opened this issue 5 months ago · comments

Describe the bug

I have what I believe is a perfectly fine LAS file for the moon. It was made by setting the option a_srs in the writer to a reasonable WKT string (see below). But pdal info cannot read it. It says:

pdal info --all moon.las

pdal info filters.stats Error) GDAL failure (1) PROJ: proj_create_operations: Source and target ellipsoid do not belong to the same celestial body (Moon vs Earth).
(pdal info filters.stats Error) GDAL failure (6) Cannot find coordinate operations from GEOGCRS["Geographic Coordinate System",DATUM["D_MOON",ELLIPSOID["MOON",1737400,0,LENGTHUNIT["metre",1,ID["EPSG",9001]]]],PRIMEM["Reference meridian",0,ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9122]]],CS[ellipsoidal,2],AXIS["latitude",north,ORDER[1],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9122]]],AXIS["longitude",east,ORDER[2],ANGLEUNIT["degree",0.0174532925199433,ID["EPSG",9122]]]]' to EPSG:4326'

zsh: segmentation fault (core dumped) pdal info --all moon.las

Here's the file, if necessary: https://drive.google.com/file/d/1idnuZ2BkaauToMrh28v-8obVD38vkrwc/view?usp=sharing

When I set:

export PROJ_IGNORE_CELESTIAL_BODY=YES

it works, and gives the following very appropriate info, as seen below. So the question is, why is it imagining Earth data anywhere?

{
"boundary":
{
"area": 18898859.03,
"avg_pt_per_sq_unit": 3.767954989e-09,
"avg_pt_spacing": 3.893794659,
"boundary": "POLYGON ((15.37001239 -9.53954786,15.37994986 -9.53899263,15.3796293 -9.52400136,15.38091155 -9.52289089,15.38059099 -9.50789962,15.38187324 -9.50678916,15.38155268 -9.49735021,15.38283493 -9.49623975,15.38283493 -9.49401882,15.38155268 -9.49290835,15.38187324 -9.49013219,15.38059099 -9.48902173,15.35783098 -9.48957696,15.35654873 -9.48846649,15.35206084 -9.48846649,15.35077859 -9.48957696,15.35109915 -9.49679498,15.3498169 -9.49790544,15.35013746 -9.50845486,15.3488552 -9.50956532,15.3488552 -9.5384374,15.36808901 -9.5384374,15.37001239 -9.53954786))",
"boundary_json": { "type": "Polygon", "coordinates": [ [ [ 15.37001239, -9.53954786 ], [ 15.37994986, -9.53899263 ], [ 15.3796293, -9.52400136 ], [ 15.38091155, -9.52289089 ], [ 15.38059099, -9.50789962 ], [ 15.38187324, -9.50678916 ], [ 15.38155268, -9.49735021 ], [ 15.38283493, -9.49623975 ], [ 15.38283493, -9.49401882 ], [ 15.38155268, -9.49290835 ], [ 15.38187324, -9.49013219 ], [ 15.38059099, -9.48902173 ], [ 15.35783098, -9.48957696 ], [ 15.35654873, -9.48846649 ], [ 15.35206084, -9.48846649 ], [ 15.35077859, -9.48957696 ], [ 15.35109915, -9.49679498 ], [ 15.3498169, -9.49790544 ], [ 15.35013746, -9.50845486 ], [ 15.3488552, -9.50956532 ], [ 15.3488552, -9.5384374 ], [ 15.36808901, -9.5384374 ], [ 15.37001239, -9.53954786 ] ] ] },
"density": 0.06595593934,
"edge_length": 0,
"estimated_edge": 0.001110464482,
"hex_offsets": "MULTIPOINT (0 0, -0.000320563 0.000555232, 0 0.00111046, 0.000641127 0.00111046, 0.00096169 0.000555232, 0.000641127 0)",
"sample_size": 5000,
"threshold": 15
},
"file_size": 42381331,
"filename": "moon.las",
"metadata":
{
"comp_spatialreference": "GEOGCS["Geographic Coordinate System",DATUM["D_MOON",SPHEROID["MOON",1737400,0]],PRIMEM["Reference meridian",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AXIS["Latitude",NORTH],AXIS["Longitude",EAST]]",
"compressed": false,
"copc": false,
"count": 1246492,
"creation_doy": 0,
"creation_year": 2024,
"dataformat_id": 3,
"dataoffset": 603,
"filesource_id": 0,
"global_encoding": 0,
"global_encoding_base64": "AAA=",
"gtiff": "Geotiff_Information:\n Version: 1\n Key_Revision: 1.0\n Tagged_Information:\n End_Of_Tags.\n Keyed_Information:\n GTModelTypeGeoKey (Short,1): ModelTypeGeographic\n GTRasterTypeGeoKey (Short,1): RasterPixelIsArea\n GeographicTypeGeoKey (Short,1): User-Defined\n GeogCitationGeoKey (Ascii,101): "GCS Name = Geographic Coordinate System|Datum = D_MOON|Ellipsoid = MOON|Primem = Reference meridian|"\n GeogGeodeticDatumGeoKey (Short,1): User-Defined\n GeogAngularUnitsGeoKey (Short,1): Angular_Degree\n GeogEllipsoidGeoKey (Short,1): User-Defined\n GeogSemiMajorAxisGeoKey (Double,1): 1737400 \n GeogSemiMinorAxisGeoKey (Double,1): 1737400 \n GeogPrimeMeridianLongGeoKey (Double,1): 0 \n End_Of_Keys.\n End_Of_Geotiff.\n",
"header_size": 227,
"major_version": 1,
"maxx": 15.38201715,
"maxy": -9.489471466,
"maxz": 380.2343506,
"minor_version": 2,
"minx": 15.34934733,
"miny": -9.538585783,
"minz": 193.3798,
"offset_x": 15.3656822399525,
"offset_y": -9.51402862427238,
"offset_z": 286.807075305629,
"point_length": 34,
"project_id": "00000000-0000-0000-0000-000000000000",
"scale_x": 8.00687899977922e-12,
"scale_y": 1.20371768173626e-11,
"scale_z": 4.57952266428453e-08,
"software_id": "PDAL 2.6.0 (95728e)",
"spatialreference": "GEOGCS["Geographic Coordinate System",DATUM["D_MOON",SPHEROID["MOON",1737400,0]],PRIMEM["Reference meridian",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AXIS["Latitude",NORTH],AXIS["Longitude",EAST]]",
"srs":
{
"compoundwkt": "GEOGCS["Geographic Coordinate System",DATUM["D_MOON",SPHEROID["MOON",1737400,0]],PRIMEM["Reference meridian",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AXIS["Latitude",NORTH],AXIS["Longitude",EAST]]",
"horizontal": "GEOGCS["Geographic Coordinate System",DATUM["D_MOON",SPHEROID["MOON",1737400,0]],PRIMEM["Reference meridian",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AXIS["Latitude",NORTH],AXIS["Longitude",EAST]]",
"isgeocentric": false,
"isgeographic": true,
"json": {
"type": "GeographicCRS",
"name": "Geographic Coordinate System",
"datum": {
"type": "GeodeticReferenceFrame",
"name": "D_MOON",
"ellipsoid": {
"name": "MOON",
"radius": 1737400
},
"prime_meridian": {
"name": "Reference meridian",
"longitude": 0
}
},
"coordinate_system": {
"subtype": "ellipsoidal",
"axis": [
{
"name": "Latitude",
"abbreviation": "lat",
"direction": "north",
"unit": "degree"
},
{
"name": "Longitude",
"abbreviation": "lon",
"direction": "east",
"unit": "degree"
}
]
}
},
"prettycompoundwkt": "GEOGCS["Geographic Coordinate System",\n DATUM["D_MOON",\n SPHEROID["MOON",1737400,0]],\n PRIMEM["Reference meridian",0],\n UNIT["degree",0.0174532925199433,\n AUTHORITY["EPSG","9122"]],\n AXIS["Latitude",NORTH],\n AXIS["Longitude",EAST]]",
"prettywkt": "GEOGCS["Geographic Coordinate System",\n DATUM["D_MOON",\n SPHEROID["MOON",1737400,0]],\n PRIMEM["Reference meridian",0],\n UNIT["degree",0.0174532925199433,\n AUTHORITY["EPSG","9122"]],\n AXIS["Latitude",NORTH],\n AXIS["Longitude",EAST]]",
"proj4": "+proj=longlat +R=1737400 +no_defs",
"units":
{
"horizontal": "unknown",
"vertical": ""
},
"vertical": "",
"wkt": "GEOGCS["Geographic Coordinate System",DATUM["D_MOON",SPHEROID["MOON",1737400,0]],PRIMEM["Reference meridian",0],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AXIS["Latitude",NORTH],AXIS["Longitude",EAST]]"
},
"system_id": "PDAL",
"vlr_0":

System/installation information:
Please provide information on your PDAL version (pdal --version) and system (e.g., uname -a or ver).

$ uname -a

Linux 4.15.0-220-generic #231-Ubuntu SMP Fri Nov 10 20:32:58 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux

$ pdal --version

pdal 2.6.0 (git-version: 95728e)

If installed via Conda, you may be asked to paste the output of conda list and conda info as well.

$ conda list

pdal                      2.6.0                h28c8413_1    conda-forge

$ conda info

conda info

            shell level : 2
       user config file : /home/oalexan1/.condarc
 populated config files : /home/oalexan1/.condarc
          conda version : 23.3.1
    conda-build version : 3.27.0
         python version : 3.10.12.final.0
       virtual packages : __archspec=1=x86_64
                          __glibc=2.27=0
                          __linux=4.15.0=0
                          __unix=0=0
       base environment : /home/oalexan1/miniforge3  (writable)
      conda av data dir : /home/oalexan1/miniforge3/etc/conda
  conda av metadata url : None
           channel URLs : https://repo.anaconda.com/pkgs/main/linux-64
                          https://repo.anaconda.com/pkgs/main/noarch
                          https://repo.anaconda.com/pkgs/r/linux-64
                          https://repo.anaconda.com/pkgs/r/noarch
          package cache : /home/oalexan1/miniforge3/pkgs
                          /home/oalexan1/.conda/pkgs
       envs directories : /home/oalexan1/miniconda3/envs
                          /home/oalexan1/miniforge3/envs
                          /home/oalexan1/.conda/envs
               platform : linux-64
             user-agent : conda/23.3.1 requests/2.31.0 CPython/3.10.12 Linux/4.15.0-220-generic ubuntu/18.04.6 glibc/2.27
                UID:GID : 524639:66053
             netrc file : None
           offline mode : False

Jay Laura · Answer 1 · Fri Feb 16 2024 04:32:03 GMT+0800 (China Standard Time)

@oleg-alexandrov I believe that this is actually a PROJ issue. See the last update in the 9.2.0 CHANGELOG. Specifically, createFromUserInput was failing with non-Earth CRSes and the solution was to include the PROJ_IGNORE_CELESTIAL_BODY flag.

When using pdal info I end up always prepending the flag, which is not ideal, but it is what is needed at this time. GDAL also suffers from the same issues with CRSs.

Howard Butler · Answer 2 · Fri Feb 16 2024 04:52:35 GMT+0800 (China Standard Time)

We should at least fix the segfault. We don't want to do that.