arcgis 面或线要素类上的搜索游标

import arcpy

infc = arcpy.GetParameterAsText(0)

# Identify the geometry field
#
desc = arcpy.Describe(infc)
shapefieldname = desc.ShapeFieldName

# Create search cursor
#
rows = arcpy.SearchCursor(infc)

# Enter for loop for each feature/row
#
for row in rows:
    # Create the geometry object
    #
    feat = row.getValue(shapefieldname)

    # Print the current multipoint's ID
    #
    print "Feature %i:" % row.getValue(desc.OIDFieldName)
    partnum = 0

    # Step through each part of the feature
    #
    for part in feat:
        # Print the part number
        #
        print "Part %i:" % partnum

        # Step through each vertex in the feature
        #
        for pnt in feat.getPart(partnum):
            if pnt:
                # Print x,y coordinates of current point
                #
                print pnt.X, pnt.Y
            else:
                # If pnt is None, this represents an interior ring
                #
                print "Interior Ring:"
        partnum += 1     

对于上述要素类，脚本将返回以下信息。要素 0 是单部分面，要素 1 是两部分面，而要素 2 是带有内部环的单部分面。

Feature 0:
Part 0:
3.0 8.0
1.0 8.0
2.0 10.0
3.0 8.0
Feature 1:
Part 0:
5.0 3.0
3.0 3.0
3.0 5.0
5.0 3.0
Part 1:
7.0 5.0
5.0 5.0
5.0 7.0
7.0 5.0
Feature 2:
Part 0:
9.0 11.0
9.0 8.0
6.0 8.0
6.0 11.0
9.0 11.0
Interior Ring:
7.0 10.0
7.0 9.0
8.0 9.0
8.0 10.0
7.0 10.0