-
The Basic Raster Landscape Metrics Tools are new Arc Toolbox commands for ArcGIS
- Platform – ArcGIS 10
- The tools in this toolset require as input an integer GRID with the VALUE field representing the desired landscape class structure. Note: the input format MUST be GRID. All other formats will cause the program to fail.
- Multiple landscape metrics are calculated and added as new fields to the attribute table of the output raster (the input raster is not modified).
- For the “Basic Raster Landscape Metrics by Class” tool, the output raster attribute table is organized by class structure (one row for each landscape class) and the calculated metrics are summarized by these classes.
- The metrics calculated for the “Basic Raster Landscape Metrics by Class” are: “AREA”, “PERIMETER”, “PCT_LS” (Percent of Landscape), “NUM_PATCH” (Number of Patches), “AVE_P_AREA” (Mean Patch Area), “MIN_P_AREA” (Minimum Patch Area), “MAX_P_AREA” (Maximum Patch Area), “STD_DEV”, “SDI” (Simpson’s Modified Diversity Index), and “SHDI” (Shannon’s Diversity Index).
- For the “Basic Raster Landscape Metrics by Patch” tool, the output raster attribute table is organized by patch (one row for each landscape patch) and the calculated metrics are for an individual patch.
- The metrics calculated for the “Basic Raster Landscape Metrics by Patch” are: “AREA”, “PERIMETER”, “THICKNESS” (Radius of largest circle which can fit in patch), “X_CENTROID”, “Y_CENTROID”, “MAJORAXIS” (Major (long) Axis of Ellipse fitting Patch), “MINORAXIS” (Minor (short) Axis of Ellipse fitting Patch), and “ORIENTATION” (Angle of Ellipse fitting Patch).
|