Intersect (Coverage)

This tool only works with an ArcInfo license and will only be available in ArcToolbox if you have installed ArcInfo Workstation.

Computes the geometric intersection of two coverages. Only those features in the area common to both coverages will be preserved in the output coverage.

Learn more about how Intersect works


Illustration

Intersect Illustration

Usage tips

Syntax

Intersect_arc (in_cover, intersect_cover, out_cover, feature_type, fuzzy_tolerance, join_attributes)
Parameter Explanation Datatype
Input Coverage (Required)

The coverage whose polygon, line, or point features will be intersected with the intersect coverage.

Coverage
Intersect Coverage (Required)

The intersect coverage. This coverage must contain polygon features.

Coverage
Output Coverage (Required)

The coverage that will be created to contain the results.

Coverage
Feature Type (Optional)

The input coverage feature class to be overlaid and preserved in the output coverage.

  • POLY—The input coverage's polygon feature class will be used as input. This is the default option.
  • LINE—The input coverage's line (arc) feature class will be used as input.
  • POINT—The input coverage's point feature class will be used as input.

String
Fuzzy Tolerance (Optional)

The minimum distance between coordinates in the output coverage. By default, the minimum fuzzy tolerance value from the input and erase coverages is used. Learn more about how the Default Fuzzy Tolerance is Calculated

Double
Join Attributes (Optional)

Specifies whether all items in both the input coverage feature attribute and identity coverage will be joined to the output coverage feature attribute table.

  • JOIN—All feature attribute items from both coverages will appear in the output coverage feature attribute table. If a duplicate item is encountered, the item in the input coverage will be maintained and the one in the join file will be dropped. This is the default option.
  • NO_JOIN—Only the feature's internal number (cover#) from the input coverage and the intersect coverage are joined in the output coverage feature attribute table. This option is useful in reducing the size of the output coverage feature attribute table. The Add Join tool can then be used to get the attributes to the output coverage features.

Boolean
Data types for geoprocessing tool parameters

Script Example

# TransferStationInfoToWells.py
# Description: Transfers the attributes (Gauging station ID) of the closest 
#               weather station (point coverage named station) to the wells
#               coverage, then loads that point feature class to a geodatabase. 
# Requirements: Python and the Python win32all extension
# Author: ESRI
# Data 1/1/2004

# Create the Geoprocessor
import arcgisscripting
gp = arcgisscripting.create()

# Put in error trapping in case an error occurs when running tool
try:
    # Use the Thiessen tool to apportion the study area
    gp.workspace = "c:/weather"
    gp.thiessen_arc("station","station_th")

    # Intersect the wells to the thiessen polys from the stations to transfer all the
    #  attributes from the thiessen polys to the wells2 coverage
    gp.intersect_arc("wells","station_th","wells2","point","#","join")

except:
    # If an error occurred print the message to the screen
    print gp.GetMessages()

See Also

  • Identity (Analysis)
  • Identity (Coverage)
  • Intersect (Coverage)
  • Union (Coverage)