topic Re: Import USGS Point Cloud in ReCap Forum

Import USGS Point Cloud

whiskytown — Mon, 12 Jun 2023 16:37:19 GMT

I am importing a USGS 1/3 arc second point cloud. According to the metadata, the coordinate system is NAD83(2011) / Conus Albers. (There is no EPSG number listed in the metadata.) This precise one is not listed in Recap advanced settings. Is there an equivalent CS?

Re: Import USGS Point Cloud

whiskytown — Mon, 12 Jun 2023 17:07:45 GMT

p.s. I am looking for the "projection" to be precise. I just contacted USGS and they referred me to Autodesk. The nearest thing that looks similar listed in ReCap is NAD83.CA/Teal (NAD83 Albers Equal Area for California, Meter; EPSG 3310).

Re: Import USGS Point Cloud

whiskytown — Tue, 13 Jun 2023 20:00:01 GMT

Googling NAD83(2011) / Conus Albers, the projection in the point clouds' metadata, it is shown as EPSG 6350. This is not available in MAPCSASSIGN, though.

Re: Import USGS Point Cloud

Pointdump — Tue, 13 Jun 2023 21:29:04 GMT

Hi John,
If it isn't in MAPCSLIBRARY you can create a custom projection.
Dave

Re: Import USGS Point Cloud

whiskytown — Thu, 15 Jun 2023 02:15:19 GMT

I would like to develop the skill to do that, indeed.

Re: Import USGS Point Cloud

Pointdump — Thu, 15 Jun 2023 06:38:25 GMT

John,
Two ways to do this. One is to Duplicate and Edit a current coordinate system. @ChicagoLooper steps through this nicely >>>Here<<<.
Second way is to create the projection from scratch:
In Civil 3D, go to the Planning and Analysis Workspace. Under the Map Setup Tab >> Coordinate System Panel >> Create Dropdown, choose Create Coordinate System Definition. The wizard will step you through creating EPSG:6350. All the information you need to define the projection can be found >>>Here<<<.
Dave