Delete Features (Data Management)

Summary

Deletes all or the selected subset of features from the input.

If the input features are from a feature class, all rows will be deleted. If the input features are from a layer with no selection, all features will be deleted.

Usage

• This tool accepts layers with selections as input and will delete only those features that are selected. To delete specific features from a feature class, convert the feature class into a layer using Make Feature Layer or by adding it to the display. A selection can then be applied using the Select Layer By Attribute or Select Layer By Location tool or by querying a map layer or selecting features interactively using selection tools from the Selection group on the Map tab.

• If a layer is input, and that layer does not have a selection, all features will be deleted. If a feature class is input, all features will be deleted.

  Note:

  Deleting all rows from a feature class with a large number of rows can be slow. If your intent is to delete all the rows in the feature class, you should consider using the Truncate Table tool instead. See the Truncate Table documentation for important cautionary statements on its use.

• This tool deletes both the geometry and attributes of the Input Features.

• The Extent environment is honored by this tool. Only the features that are within or intersect the output extent environment will be deleted. If the input layer has a selection, only the selected features that are within or intersect the output extent will be deleted.

Parameters

Dialog

Label	Explanation	Data Type
Input Features	The feature class, shapefile, or layer containing features to be deleted.	Feature Layer

Derived Output

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

Python

arcpy.management.DeleteFeatures(in_features)

Name	Explanation	Data Type
in_features	The feature class, shapefile, or layer containing features to be deleted.	Feature Layer

Derived Output

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

Code sample

DeleteFeatures example 1 (Python window)

The following Python window script demonstrates how to use the DeleteFeatures function in immediate mode.

import arcpy
arcpy.env.workspace = "C:/data"
arcpy.management.CopyFeatures("majorrds.shp", "C:/output/output.gdb/majorrds2")
arcpy.management.DeleteFeatures("C:/output/output.gdb/majorrds2")

DeleteFeatures example 2 (stand-alone script)

The following stand-alone script demonstrates how to use the DeleteFeatures function to delete features based on an expression.

# Name: DeleteFeatures_Example2.py
# Description: Delete features from a feature class based on an expression
 
# Import system modules
import arcpy
 
# Set environment settings
arcpy.env.workspace = "C:/data/airport.gdb"
 
# Set local variables
inFeatures = "parcels"
outFeatures = "C:/output/output.gdb/new_parcels"
tempLayer = "parcelsLayer"
expression = arcpy.AddFieldDelimiters(tempLayer, "PARCEL_ID") + " = 'Cemetery'"
 

# Run CopyFeatures to make a new copy of the feature class
arcpy.management.CopyFeatures(inFeatures, outFeatures)
 
# Run MakeFeatureLayer
arcpy.management.MakeFeatureLayer(outFeatures, tempLayer)
 
# Run SelectLayerByAttribute to determine which features to delete
arcpy.management.SelectLayerByAttribute(tempLayer, "NEW_SELECTION", 
                                        expression)
 
# Run GetCount and if some features have been selected, then 
#  run DeleteFeatures to remove the selected features.
if int(arcpy.management.GetCount(tempLayer)[0]) > 0:
    arcpy.management.DeleteFeatures(tempLayer)

Environments

Current Workspace, Extent

Special cases

Extent

Only those features that are within or intersect the extent will be deleted.