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