Input File
Interpolation Method
This option allows you to switch between the two available LiDAR gridding and analysis tools.
Method Options
The Method Options vary according to the selected Interpolation Method. For the Surface Analysis tool, the following method options are available:
Tree Canopy Methods
Select between Canopy Coverage, Canopy Density, and Canopy Height.
Class Rules
Determine which classification codes will be supplied to differentiate ground from vegetation. Available options are Ground, Vegetation, and Ground and Vegetation.
Ground Class
Classification codes that represent the ground surface.
Vegetation Class
Classification codes that represent the vegetation canopy surface.
- 0 Created, never classified.
- 1 Unclassified.
- 2 Ground.
- 3 Low Vegetation.
- 4 Medium Vegetation.
- 5 High Vegetation.
- 6 Building
- 7 Low Point (Low noise)
- 8 Model Key/Reserved
- 9 Water
- 10 Rail
- 11 Road Surface
- 12 Bridge Deck
- 13 Wire - Guard (Shield)
- 14 Wire - Conductor (Phase)
- 15 Transmission Tower
- 16 Wire-structure Connector (Insulator)
- 17 Bridge
- 18 High Point (High noise)
Extended Classification
If you have version 1.4 LAS files (or later), check the Extended Classification channel to use it instead of the standard classification channel.
Make Empty Zero
Check to record empty cells with zero values rather than an invalid cell.
Patch Size (available only with the Tree Canopy Height method)
Use a large patch size to improve performance and a small patch size to minimize memory requirements.
Integration (available only with the Tree Canopy Coverage and Density methods)
Over Cell - Do this over the area of a single raster cell. In this scenario, you ought to choose a cell size that is large enough to ensure that there are a sufficient number of hits in each cell to provide statistical significance.
Over Radius - Alternatively, you can specify an Integration Radius.
Smooth Kernel (available only with the Tree Canopy Coverage and Density methods)
Apply a smooth quartic kernel weighting to all samples within the integration radius.
Clipping
Clipping options to constrain interpolation distance around source data points.
Raster Geometry
Cell Size
Specify the cell size for the output raster in the Cell Size box.
Output Geometry
Define output raster origin co-ordinate and dimensions.
Output
Output File
Specify a name, location, and format for the output raster that you are creating. In the Output File box, enter the name you want to specify for your output file.
Display Output File
Select to display the output raster in the window.
Compression Settings
Choose Compression settings for optimization of Speed, Storage, or Balanced.