Create Contours

Résumé

Esri Defense Mapping cartographic production tool that creates and smooths contours from an input raster.

This tool uses the following process to generate contours:

1. Create contours by executing the ArcGIS Spatial Analyst Contour tool.
2. Smooth contours by applying a Defense Mapping-specific algorithm.
3. Calculate contour fields that pertain to Defense Mapping data models.

Utilisation

• Set the Map Scale parameter to the scale at which your cartographic products will be printed. The tool uses this parameter to improve contour display in output products.

• This tool requires specific fields within Out Contour Features. Out Contour Features should be a Defense Mapping data model feature class.

Syntaxe

CreateContours_defense (Input_Raster, Map_Scale, Base_Contour, Contour_Interval, Index_Interval, Include_Zero_Contour, Out_Contour_Features, Contour_Subtype, {Input_Area_of_Interest}, {Raster_Elevation_Units}, {Contour_Elevation_Units})

Paramètre	Explication	Type de données
Input_Raster [Input_Raster,...]	A list of rasters from which contours will be created.	Raster Layer
Map_Scale	The scale at which the cartographic product is going to be printed. The tool optimizes cartographic display by setting a minimum feature length based on this scale. 1:5000 —Contour printing is optimized for scale 1:5,000. 1:7500 —Contour printing is optimized for scale 1:7,500. 1:12500 —Contour printing is optimized for scale 1:12,500. 1:25000 —Contour printing is optimized for scale 1:25,000. 1:50000 —Contour printing is optimized for scale 1:50,000. This is the default. 1:100000 —Contour printing is optimized for scale 1:100,000. 1:250000 —Contour printing is optimized for scale 1:250,000. 1:500000 —Contour printing is optimized for scale 1:500,000. 1:1000000 —Contour printing is optimized for scale 1:1,000,000.	String
Base_Contour	Base contour value. Contours are generated above and below this value to cover the entire value range of the input raster. Setting this value to 5 and the contour interval to 10 will produce contour lines at 5, 15, 25, -5, -15, and so on. The default is zero.	Double
Contour_Interval	The interval, or distance, between contour lines. This can be any positive number.	Double
Index_Interval	Indicates the index contour interval.	Double
Include_Zero_Contour	Indicates if the tool will create a zero contour. A zero contour represents sea level. Zero contours, when generated along a coastline, may be created inside a water body. Specify ZERO_CONTOUR if you will generate contours on land areas that are at or below sea level. NO_INCLUDE_ZERO_CONTOUR —Do not include a zero contour. This is the default. INCLUDE_ZERO_CONTOUR —Include a zero contour.	Boolean
Out_Contour_Features	A feature layer from an existing Defense Mapping feature class. This tool appends contours to this feature class and returns a feature layer.	Feature Layer
Contour_Subtype	A subtype in Out_Contour_Features to which contours will be written.	String
Input_Area_of_Interest (Facultatif)	An area of interest (AOI) that is contained in a raster and is used to clip the raster before creating contours. A buffer is created before clipping the raster and results in larger output contours that extend beyond the selected AOI.	Feature Layer
Raster_Elevation_Units [Raster_Elevation_Units,...] (Facultatif)	The measurement units for elevation values in the Input Raster parameter. Meters —Raster elevation units are meters. Feet —Raster elevation units are feet.	String
Contour_Elevation_Units [Contour_Elevation_Units,...] (Facultatif)	Contour elevation units will be created with the same elevation units as raster values unless specified to use different units, such as feet instead of meters. Meters —Contour elevation units are meters. Feet —Contour elevation units are feet.	String

Exemple de code

CreateContours example (Python window)

The following Python window script demonstrates how to use the CreateContours tool.

# set gp environment
arcpy.env.workspace="C:/data"

# variables for tool
rasters="elevation.tif"
mapScale="1:12500"
baseContour=0
contourInterval=10
indexInterval="ZERO_CONTOUR"

# output feature class must exist
outContours="mgcp.gdb/mgcp/contours"
contourSubtype="FCSubtype"

# execute the tool
arcpy.CreateContours_defense(rasters,mapScale,baseContour,contourInterval,indexInterval,outContours,contourSubtype)

Environnements

• Espace de travail courant

Informations de licence

• ArcGIS Desktop Basic: Non
• ArcGIS Desktop Standard: Non
• ArcGIS Desktop Advanced: Requiert Defense Mapping and Spatial Analyst