ArcMap

Create Contours

Zusammenfassung

Creates and smooths contours from an input raster.

Verwendung

  • Set the Map Scale parameter to the scale that your cartographic products will print. The tool uses this parameter to improve contour display in output products.

  • This tool requires specific fields in the Out Contour Features parameter value. The Out Contour Features parameter value should be a Defense Mapping data model feature class.

  • This tool uses the following process to generate contours:

    1. Create contours by executing the 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.

Syntax

arcpy.defense.CreateContours(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}, {Resample_Raster})
ParameterErklärungDatentyp
Input_Raster
[Input_Raster,...]

A list of rasters from which contours will be created.

Raster Layer
Map_Scale

Specifies the scale at which the cartographic product will be printed. The tool optimizes cartographic display by setting a minimum feature length based on this scale.

  • 1:5000 —Contour printing will be optimized for scale 1:5,000.
  • 1:7500 —Contour printing will be optimized for scale 1:7,500.
  • 1:10000 —Contour printing will be optimized for scale 1:10,000.
  • 1:12500 —Contour printing will be optimized for scale 1:12,500.
  • 1:25000 —Contour printing will be optimized for scale 1:25,000.
  • 1:50000 —Contour printing will be optimized for scale 1:50,000. This is the default.
  • 1:100000 —Contour printing will be optimized for scale 1:100,000.
  • 1:250000 —Contour printing will be optimized for scale 1:250,000.
  • 1:500000 —Contour printing will be optimized for scale 1:500,000.
  • 1:1000000 —Contour printing will be optimized for scale 1:1,000,000.
String
Base_Contour

The 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. The value can be any positive number.

Double
Index_Interval

The index contour interval.

Double
Include_Zero_Contour

Specifies whether the tool will create a zero contour. A zero contour represents sea level. When generated along a coastline, zero contours can be created inside a water body. Specify INCLUDE_ZERO_CONTOUR if you will generate contours on land areas that are at or below sea level.

  • NO_INCLUDE_ZERO_CONTOUR —A zero contour will not be included. This is the default.
  • INCLUDE_ZERO_CONTOUR —A zero contour will be included.
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 of the Out_Contour_Features parameter value to which contours will be written.

String
Input_Area_of_Interest
(optional)

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,...]
(optional)

Specifies the measurement units for elevation values in the Input_Raster parameter.

  • Meters —The raster elevation units will be meters.
  • Feet —The raster elevation units will be feet.
String
Contour_Elevation_Units
[Contour_Elevation_Units,...]
(optional)

Specifies the contour elevation units. The contour elevation units will be created with the same elevation units as raster values unless specified otherwise, such as feet instead of meters.

  • Meters —The contour elevation units will be meters.
  • Feet —The contour elevation units will be feet.
String
Resample_Raster
(optional)

Specifies whether the Input_Raster parameter value will be resampled before contours are created.

  • NO_RESAMPLE —The Input_Raster parameter value will not be resampled before contours are created.
  • RESAMPLE —The Input_Raster parameter value will be resampled before contours are created. This is the default.
Boolean

Codebeispiel

CreateContours example (Python window)

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

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

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

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

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

Umgebungen

Lizenzinformationen

  • Basic: Nein
  • Standard: Nein
  • Advanced: Erfordert Defense Mapping and Spatial Analyst

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