largeunion.py

esri公司产品,本代码的主要功能是实现大量数据的叠加问题!

"""********************************************************************************************************************
LargeUnion.py

Description: 

Requirements: 

Python and the Python for Windows extention (win32 Extension) to be installed.

Author: ESRI, Redlands

Date: 07/14/2004

Usage: <input_featureclasses> <output_featureclass> <join_attributes> <cluster_tolerance> <gaps>
*********************************************************************************************************************"""

try:
    #Import system modules and PartionedOverlayer.py (contains functions to partiondata and overlay)
    import PartitionedOverlay, sys

    #Describe input featureclass to determine the shape type for the output
    PartitionedOverlay.shape_type = "POLYGON"

    #Create the parameter list
    param_list = [sys.argv[1], sys.argv[2], sys.argv[3], sys.argv[4], sys.argv[5]]

    #Check for data in SDE and if a scratch workspace
    PartitionedOverlay.ScratchWorkspaceExists("union_analysis", param_list)

    #Set the cluster tolerance in the Partition Overlay script for later use
    PartitionedOverlay.SetClustTol("union_analysis", sys.argv[1], sys.argv[4])

    #Run Largeunion passing in the tool name and parameter list
    PartitionedOverlay.RunLargeOverlay("union_analysis", param_list)

except Exception, ErStr:
    PartitionedOverlay.gp.AddError(str(ErStr))

except:
    PartitionedOverlay.gp.AddError("Failure in LargeUnion\n" + str(PartitionedOverlay.gp.GetMessages()))