| Étiquette | Explication | Type de données |
Input Raster | The rasters that will be used to create elevation bands. | Raster Layer; Mosaic Layer |
Area of Interest | The layer that will define the processing extent. | Feature Layer |
Output Feature Class | The feature class containing the output elevation band features. | Feature Class |
Contour Interval | Specifies the contour interval that will be used to determine the closest available contour when calculating the elevation band area.
| Long |
Minimum Feature Area | The minimum area of the output polygons. Features smaller than this value will be removed. The default is 0.00016 square decimal degrees. Remarque :If you're creating an output dataset with a projected coordinate system, ensure that this value reflects the square units of that coordinate system—for example, square meters for a UTM dataset. Otherwise, the default value may result in an empty output dataset. | Double |
Smoothing Tolerance | The tolerance that will be used by the smoothing algorithm. The larger the value, the more generalized the output band features. The default is 0.002 decimal degrees. | Linear Unit |
Hydro Exclusion Features (Facultatif) | The bodies of water that will be excluded when calculating the elevation band area. | Feature Layer |
Number of Elevation Bands (Facultatif) | Specifies the number of elevation bands that will be generated.
| Long |
Synthèse
Creates an elevation bands feature class from a digital elevation model (DEM).
Utilisation
-
The Area of Interest parameter must have only one selected feature in the map sheet extent.
The Hydro Exclusion Features parameter is used to identify large bodies of water and coastal areas that would significantly alter the area of the elevation bands.
Elevation bands are created with their limits aligned to the Contour Interval parameter value, except low and high values, which will represent their actual calculated values.
If more than one input raster is used, all input rasters must have the same cell size, band count, and pixel type. All input rasters should also use the same elevation units (meters or feet).
Paramètres
arcpy.topographic.GenerateElevationBands(in_raster, in_aoi, out_feature_class, contour_interval, min_area, smooth_tolerance, {in_hydro_features}, {number_of_bands})| Nom | Explication | Type de données |
in_raster [in_raster,...] | The rasters that will be used to create elevation bands. | Raster Layer; Mosaic Layer |
in_aoi | The layer that will define the processing extent. | Feature Layer |
out_feature_class | The feature class containing the output elevation band features. | Feature Class |
contour_interval | Specifies the contour interval that will be used to determine the closest available contour when calculating the elevation band area.
| Long |
min_area | The minimum area of the output polygons. Features smaller than this value will be removed. The default is 0.00016 square decimal degrees. Remarque :If you're creating an output dataset with a projected coordinate system, ensure that this value reflects the square units of that coordinate system—for example, square meters for a UTM dataset. Otherwise, the default value may result in an empty output dataset. | Double |
smooth_tolerance | The tolerance that will be used by the smoothing algorithm. The larger the value, the more generalized the output band features. The default is 0.002 decimal degrees. | Linear Unit |
in_hydro_features (Facultatif) | The bodies of water that will be excluded when calculating the elevation band area. | Feature Layer |
number_of_bands (Facultatif) | Specifies the number of elevation bands that will be generated.
| Long |
Exemple de code
The following code sample creates a raster layer from Production Mapping sample data. The script runs the GenerateElevationBands function using the raster layer and writes the output to a file geodatabase at C:\Temp. You need to have the Extension ArcGIS Spatial Analyst and the Production Mapping extension enabled.
# Name: GenerateElevationBands_sample.py
# Description: Use the Generate Elevation Bands tool to create a new output feature class with elevation bands for cartography
# Import System Modules
import arcpy
# Check Out Extensions
arcpy.CheckOutExtension('Foundation')
arcpy.CheckOutExtension('Spatial')
# Setting Local Variables
in_raster = r'C:\Temp\Monterey.dt2'
in_aoi = r'C:\Temp\MapIndex.gdb\Index_Polygons'
output_features = r'C:\Temp\Test.gdb\Output_Elevation_Bands'
contour_interval = 20
minimum_area = '0.00016'
tolerance = '0.02 DecimalDegrees'
in_hydro_exclusion = r'C:\Temp\Test.gdb\Hydro_Polygons'
number_of_bands = 3
# Creating feature layer and selecting an index feature
query = "PRODUCT_ID = 'V795X16573'"
aoi_layer = arcpy.management.MakeFeatureLayer(in_aoi, 'AOI').getOutput(0)
arcpy.management.SelectLayerByAttribute(aoi_layer, 'NEW_SELECTION', query)
# Creating feature layer and setting definition query for tidal water features
exclusion_layer = arcpy.management.MakeFeatureLayer(in_hydro_exclusion, 'HYDRO', "TYPE = 'Tidal Water'").getOutput(0)
# Calling Generate Elevation Bands tool
arcpy.topographic.GenerateElevationBands(in_raster, aoi_layer, output_features, contour_interval, minimum_area, tolerance,
exclusion_layer, number_of_bands)
# Check In Extensions
arcpy.CheckInExtension('Foundation')
arcpy.CheckInExtension('Spatial')Environnements
Informations de licence
- Basic: Non
- Standard: Non
- Advanced: Nécessite Production Mapping and Spatial Analyst
Rubriques connexes
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