Feature Description
Specified isoregions allow users to extract a specific number of isosurfaces with defined values. Users can directly input values, automatically generate elevation values through range and interval settings, or import specific values from *.txt files.
- The source dataset for extracting isosurfaces must be DEM or Grid data.
Example
Open the "Terrain" datasource in the "ExerciseData/RasterAnalysis" folder, which contains 5-meter resolution DEM data. This dataset will be used for demonstration.
Feature Entry
- Spatial Analysis Tab -> Raster Analysis -> Surface Analysis -> Extract Specific Isosurface；
- Toolbox -> Raster Analysis Tools -> Surface Analysis -> Extract Isolines/Areas -> Extract Specific Isosurface.
Parameter Description
- Value: Directly input specific values or click the "Batch Add" button to configure start value, end value, interval, and segments in the dialog. Click "OK" to return to the "Specified Isoregions" dialog.
During isoregion specification, users can import/export isosurface information in *.txt format, or delete individual/all current values. The toolbar buttons (from left to right) correspond to: Import, Export, Delete, Clear All operations.
Start Value: Initial value for isosurface generation.
End Value: Maximum value for isosurface generation.
Interval: Elevation difference between adjacent isosurfaces, using the same unit as the source dataset by default.
Segments: Total number of isosurfaces in the target dataset. The application automatically calculates this value after interval configuration.
- For resampling factor, smoothing method, and smoothness parameters, see: Common Parameter Description.
- Click "OK" to complete the isosurface extraction.
Related Topics