Processing georeferenced point clouds
In order to show your point cloud with the base maps and/or combine your point cloud with other spatial datasets (e.g. vectors), it is crucial that you supply the correct spatial referencing information when you upload the data. The supplied spatial reference information is used to spatially index your point cloud, which supports efficient streaming, querying, and the ability to combine your points with other data.
There are 3 pieces of information that you will need to specify in order to get your data showing in the correct location:
- The horizontal SRS - in particular, pay attention to metric vs feet coordinate systems. Make sure you pick the correct version - it is a common mistake for users with feet-based data to incorrectly choose the metric version of the spatial reference system. If possible, get the EPSG code for your SRS and enter this to search for the coordinate system.
- The vertical units - feet or meters (or other)
- The vertical datum reference - ellipsoid or geoid
If the SRS information that is specified is not correct, then this will need to be updated with the correct information, and the spatial indexing process will need to be re-run on the point cloud data. For large point clouds, this can be a time consuming process - so it is important to take care to ensure that you get this right for the initial upload process.
What to do if you realise that the spatial reference metadata is incorrect after processing
The jobs can be cancelled or edited after the point cloud data has been uploaded. This can save precious time from uploading the data again. Simply follow the below articles for further assistance.