Number Features (Defense)

Summary

Adds a sequential number to a new or existing field of a set of input features.

Usage

• Adding a sequential number to an existing field will overwrite the values in that field.

• Features outside of the Input Area to Number parameter value will automatically set the Field to Number (Existing or New) parameter to Null.

• When naming a new field to number in the Field to Number (Existing or New) parameter, the first letter must be an alpha character, and the remaining letters must be alphanumeric or underscores.

• When numbering features other than points, all features that are contained in or intersect the Input Area to Number parameter value will be numbered.

Parameters

Dialog

Label	Explanation	Data Type
Input Features	The input features that will be numbered.	Feature Set
Field to Number (Existing or New)	The input field that will be numbered. The field can be an existing short, long, or text field, or a new field.	Field
Input Area to Number (Optional)	The area that will limit the features to number; only features within this area will be numbered.	Feature Set
Spatial Sort Method (Optional)	Specifies how features will be spatially sorted for the purpose of numbering. Features are not reordered in the table. Upper right—Features will be sorted starting at the upper right corner. This is the default. Upper left—Features will be sorted starting at the upper left corner. Lower right—Features will be sorted starting at the lower right corner. Lower left—Features will be sorted starting at the lower left corner. Peano curve—Features will be sorted using a space-filling curve algorithm, also known as a Peano curve. Center—Features will be sorted starting from a center point (the mean center will be used if no center is supplied). Clockwise—Features will be sorted starting from a center point and moving clockwise. Counterclockwise—Features will be sorted starting from a center point and moving counterclockwise. None—No spatial sort will be used. The same order as the feature class will be used.	String
Field Type For New Field (Optional)	Specifies the field type that will be used for the new field. This parameter is only used when the field name does not exist in the input table. Short—The field will be of short type. This is the default. Long—The field will be of long type. Text—The field will be of text type.	String
Starting With (Optional)	The value that will be used to begin numbering.	Long
Increment By (Optional)	The value that will be used to increment by from the previous value.	Long
Center Point (Optional)	The center point that will be used to sort and number features.	Feature Set
Add Distance and Bearing to Center (Optional)	Specifies whether fields will be added to the output for distance and bearing to a center point. Do not add distance and bearing—No distance or bearing fields will be added to the output. This is the default. Add distance and bearing—DIST_TO_CENTER and ANGLE_TO_CENTER fields will be added to the output.	Boolean

Derived Output

Label	Explanation	Data Type
Output Feature Class	The updated feature class.	Feature Class

Python

arcpy.defense.NumberFeatures(in_features, field_to_number, {in_area}, {spatial_sort_method}, {new_field_type}, {starting_number}, {increment_by}, {center_point}, {add_distance_and_bearing})

Name	Explanation	Data Type
in_features	The input features that will be numbered.	Feature Set
field_to_number	The input field that will be numbered. The field can be an existing short, long, or text field, or a new field.	Field
in_area (Optional)	The area that will limit the features to number; only features within this area will be numbered.	Feature Set
spatial_sort_method (Optional)	Specifies how features will be spatially sorted for the purpose of numbering. Features are not reordered in the table. UR—Features will be sorted starting at the upper right corner. This is the default. UL—Features will be sorted starting at the upper left corner. LR—Features will be sorted starting at the lower right corner. LL—Features will be sorted starting at the lower left corner. PEANO—Features will be sorted using a space-filling curve algorithm, also known as a Peano curve. CENTER—Features will be sorted starting from a center point (the mean center will be used if no center is supplied). CLOCKWISE—Features will be sorted starting from a center point and moving clockwise. COUNTERCLOCKWISE—Features will be sorted starting from a center point and moving counterclockwise. NONE—No spatial sort will be used. The same order as the feature class will be used.	String
new_field_type (Optional)	Specifies the field type that will be used for the new field. This parameter is only used when the field name does not exist in the input table. SHORT—The field will be of short type. This is the default. LONG—The field will be of long type. TEXT—The field will be of text type.	String
starting_number (Optional)	The value that will be used to begin numbering.	Long
increment_by (Optional)	The value that will be used to increment by from the previous value.	Long
center_point (Optional)	The center point that will be used to sort and number features.	Feature Set
add_distance_and_bearing (Optional)	Specifies whether fields will be added to the output for distance and bearing to a center point. DONT_ADD_DISTANCE—No distance or bearing fields will be added to the output. This is the default. ADD_DISTANCE—DIST_TO_CENTER and ANGLE_TO_CENTER fields will be added to the output.	Boolean

Derived Output

Name	Explanation	Data Type
out_feature_class	The updated feature class.	Feature Class

Code sample

NumberFeatures example 1 (Python window)

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

import arcpy
arcpy.env.workspace = r"C:/Data.gdb"
arcpy.defense.NumberFeatures("Structures", "structure_number", None, "LL", 
                             "SHORT")

NumberFeatures example 2 (stand-alone script)

The following example uses the NumberFeatures function in an example workflow script.

# Convert building footprints to points and number the points.

# Import modules
import arcpy

# Set workspace
arcpy.env.workspace = r"C:/Data.gdb"

# Get building center points
result_points = "Building_Points"
arcpy.management.FeatureToPoint("Buildings_1", result_points)

# Number the points that represent buildings
arcpy.defense.NumberFeatures(result_points,
                             "building_number",
                             None,
                             "CENTER",
                             "TEXT",
                             25,
                             5,
                             "center_bldg",
                             "ADD_DISTANCE")

Environments

Extent, Current Workspace, Scratch Workspace