Manage LAS Dataset

LAS dataset management includes: browse footprint attributes, add/remove LAS files, build pyramids and other functions.

Browse Footprint Dataset Properties

Select the LAS dataset in the datasource list, right-click Browse Footprint Attributes to open the footprint attribute table of the LAS dataset. Each record represents a footprint corresponding to the point cloud boundary of a LAS file, containing spatial extent and metadata. Main fields in the attribute table:

  • File Path (FilePath): Full path (absolute path) of all LAS files added to the LAS dataset.
  • Generation Software (GenerateSoftware): Indicates the software package and version used to create the LAS file.
  • Creation Date (CreateTime): Indicates the date when the LAS file was created.
  • Version Number (LasVersion): Indicates the version of the LAS file.
  • Point Format (PointFormat): Indicates the type of point data records in the LAS file.
  • Point Record Length (PointRecordLength): Indicates the byte length of point data records. All point records within a single LAS file must be of the same type and therefore have identical lengths.
  • Point Count (PointNumber): Indicates the number of point clouds in the LAS file.
  • Maximum Elevation (MaxZ): Indicates the maximum elevation value of the LAS file.
  • Minimum Elevation (MinZ): Indicates the minimum elevation value of the LAS file.
Figure: Attribute Table

Manage Files

After creating a LAS dataset, you can still add or remove files from the dataset.

Feature Entry

Right-click the LAS dataset in the datasource list, select Manage LAS Dataset->Manage Files. In the dialog box, you can add or remove LAS files. The toolbar provides an Add File button for adding files individually or by folder.

Build Pyramids

Building pyramids for LAS datasets improves rendering and display efficiency for massive point cloud data.

Feature Entry

Right-click the LAS dataset in the datasource list, select Manage LAS Dataset->Build Pyramids.

Upon completion, the system will notify that pyramid construction succeeded.

Delete Pyramids

When modifying a LAS dataset, existing pyramids remain unchanged. You need to delete previous pyramids and rebuild new ones.

Feature Entry

Right-click the mosaic dataset in the datasource list, select Manage LAS Dataset>Delete Pyramids.

Upon completion, the system will notify that pyramid deletion succeeded.

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