In the Properties panel of a LAS dataset, you can view details about the LAS dataset and LAS files. After selecting a LAS dataset in the Workspace Manager, right-click and choose Properties from the context menu to display the Dataset Attribute panel on the right side of the map. The Properties panel displays basic information, LAS file information, and statistical information about the LAS dataset.
Dataset
Click the Dataset option in the Properties panel to view basic information and boundary details of the LAS dataset.
Basic Information: Includes dataset name, type, number of files, LAS point count, surface constraints, and pyramid status.
- Dataset Name: Displays the name of the current LAS dataset.
- Type: Indicates the dataset type is LAS Dataset.
- Number of Files: Shows the count of LAS files managed by the current dataset.
- LAS Points: The total number of LiDAR points in the LAS dataset.
- Surface Constraint: The number of surface constraints represented in the LAS dataset.
- Pyramid: Indicates whether pyramids have been created for the LAS dataset.
Extent: Displays the layer bounds of point cloud data and maximum/minimum elevation values.
- Min: Minimum X, Y, Z values in the point cloud data.
- Max: Maximum X, Y, Z values in the point cloud data.
- Bounds: The union of X/Y ranges and Z elevation ranges from all LAS files.
Coordinate System
Click the Coordinate System option to view coordinate system details. This section displays the coordinate system, units, and allows modification of dataset projection.
Coordinate system toolbar functions:
- Reset Coordinate System: Select a new coordinate system from dropdown or click More to open Coordinate System Settings dialog. For details, see Projection Settings window.
- Copy Coordinate System: Opens dialog to copy projection from existing datasources or datasets in current workspace.
- Export Coordinate System: Exports dataset projection to .xml file.
- Import Coordinate System: Imports projection from .xml file.
- Project: Opens Project dialog to import projection files (.shp, .prj, .mif, .tab, .tif, .img, .sit, .xml). For operations, refer to steps in Project dialog.
LAS Files
View detailed attributes of each LAS file, including general information and statistical data.
Click LAS Files option to display managed LAS files list with file names, paths, versions, and Details buttons.
Click Details to open Statistics Information dialog:
- Left panel shows LAS dataset file list - select files to view corresponding statistics.
- Right panel displays detailed statistics including general info, extent, returns, attributes, and classification data.
- Update: Available when file changes occur. Click to refresh statistics. Grayed out if no changes detected.
- Force Recalculation: Check to强制update statistics even when no changes detected.
Statistical Data
Calculate or update statistical data for entire LAS dataset.
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Calculate button appears when no statistics exist. Click to display detailed statistics in three categories: Attributes, Classification, and Returns.
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After calculation, button changes to Update. Becomes active when LAS files change for updating statistics.
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