Feature Description

Calculates the surface area of a raster dataset, i.e., computes the total surface area of the terrain surface fitted by the raster dataset within selected polygon regions.

Steps

Surface Area

1. Open the target raster dataset in the map. Note: This function is unavailable if no raster data is opened in the current workspace.
2. Navigate to Spatial Analysis Tab -> Raster Analysis -> Surface Analysis -> Surface Area. The output window will prompt: "Draw a polygon on the map, then right-click to analyze."
3. Draw a polygon on the map and right-click to complete. The application will display the calculated surface area of the temporary polygon raster in both the map and output window. The default unit is square meters. Press Esc to clear temporary polygons.

Selected Polygon Area

1. When both raster data and polygon data exist in the map, select one or multiple polygon objects (hold Shift for multi-selection).
2. Go to Spatial Analysis Tab -> Raster Analysis -> Surface Analysis -> Selected Polygon Area sub-item to measure surface area.
3. The application will display surface area results in both map and output window.

Alternative workflow:

1. Select Spatial Analysis Tab -> Raster Analysis -> Surface Analysis -> Selected Polygon Area. The map will prompt: "Select one or more polygon objects for surface measurement, right-click to finalize selection."
2. Select polygon object(s) (hold Shift for multiple selections) and right-click to confirm.
3. Surface area results will be displayed in map and output window.