johnfontaine / lasstreamreader Goto Github PK

haha

Hey John,

Thanks for putting this together! I'm trying to consume some .las files (my first try at this). I'm just getting into working with this data so I really appreciate having a head start here with your reader!

I set up my system to config a 35meg file I got from USGS but I'm getting the below error. I saw you had a fix you committed for something similar. Wondering if you could shed some light on it. I'm happy to dig in myself and see if I can contribute a fix myself if I get that far!

Cheers!

Error: Unable to determine projection from variable length records at LasStreamReader._do_read_vlr (/Users/jeff/dev/contours2/node_modules/LasStreamReader/src/las.js:203:40) at LasStreamReader._transform (/Users/jeff/dev/contours2/node_modules/LasStreamReader/src/las.js:136:18) at LasStreamReader.Transform._read (_stream_transform.js:186:10) at LasStreamReader.Transform._write (_stream_transform.js:174:12) at doWrite (_stream_writable.js:385:12) at writeOrBuffer (_stream_writable.js:371:5) at LasStreamReader.Writable.write (_stream_writable.js:288:11) at ReadStream.ondata (_stream_readable.js:642:20) at emitOne (events.js:115:13) at ReadStream.emit (events.js:210:7) at addChunk (_stream_readable.js:266:12) at readableAddChunk (_stream_readable.js:253:11) at ReadStream.Readable.push (_stream_readable.js:211:10) at onread (fs.js:2003:12) at FSReqWrap.wrapper [as oncomplete] (fs.js:664:17)

node --version
v10.16.0

npm --version
6.9.0

Windows 10 x64

🤔

The Reader started reading the file, but ended up with the following error...

Header {
file_signature: 'LASF',
file_source_id: 0,
global_encoding: 0,
project_id_guid_data: [ 0, 0, 0, '' ],
version: { major: 1, minor: 2 },
system_identifier: '',
generating_software: 'PegManager',
file_creation: { day_of_year: 262, year: 2020 },
header_size: 227,
offset_to_point_data: 313,
number_of_variable_length_records: 1,
point_data_record: { format: 3, length: 34 },
points: {
number_of_points: 5547961,
points_x_return: [ 5547961, 0, 0, 0, 0 ]
},
scale: [ 0.001, 0.001, 0.001 ],
offset: [ 3284291.6255, 282339.653, 81.668 ],
max_min: [
[ 3284950.598, 3284291.6255 ],
[ 282757.416, 282339.653 ],
[ 322.156, 81.668 ]
]
}
error TypeError: Cannot read property '0' of undefined
at adjust_axis (C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:1782:36)
at transform (C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:1874:17)
at transformer (C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:1944:28)
at Object.forward (C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:2010:20)
at LasStreamReader._do_read_vlr (C:_projects\RizInno\lidar-db\srv\node_modules\LasStreamReader\src\las.js:208:67)
at LasStreamReader._transform (C:_projects\RizInno\lidar-db\srv\node_modules\LasStreamReader\src\las.js:136:18)
at LasStreamReader.Transform._read (_stream_transform.js:191:10)
at LasStreamReader.Transform._write (_stream_transform.js:179:12)
at doWrite (_stream_writable.js:403:12)
at writeOrBuffer (_stream_writable.js:387:5)
C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:1782
if ("ew".indexOf(crs.axis[i]) !== -1) {
^

TypeError: Cannot read property '0' of undefined
at adjust_axis (C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:1782:36)
at transform (C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:1874:17)
at transformer (C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:1944:28)
at Object.forward (C:_projects\RizInno\lidar-db\srv\node_modules\proj4\dist\proj4-src.js:2010:20)
at new PointRecord (C:_projects\RizInno\lidar-db\srv\node_modules\LasStreamReader\src\models.js:340:52)
at LasStreamReader._do_read_records (C:_projects\RizInno\lidar-db\srv\node_modules\LasStreamReader\src\las.js:253:17)
at LasStreamReader._transform (C:_projects\RizInno\lidar-db\srv\node_modules\LasStreamReader\src\las.js:143:22)
at LasStreamReader.Transform._read (_stream_transform.js:191:10)
at LasStreamReader.Transform._write (_stream_transform.js:179:12)
at doWrite (_stream_writable.js:403:12)