Make XY Event Layer (Data Management)

Summary

Creates a new point feature layer based on x- and y-coordinates defined in a source table. If the source table contains z-coordinates (elevation values), that field can also be specified in the creation of the event layer. The layer created by this tool is temporary.

Learn more about adding x,y coordinate data to a map

Usage

• The output point feature layer created by this tool is temporary and will not persist after the session ends. You can export this event layer to a feature class on disk using the Copy Features, Feature to Point, or Feature Class to Feature Class tool.

• It is not possible to interactively move the output layer's points through editing controls, since event layers are not editable. Alternatives to directly moving these points are to change the x- and y-coordinate attributes in the input table, then re-create the event layer, or save the event layer to a feature class on disk, then perform edits on the feature class.

• The standard delimiter for tabular text files with extensions .csv or .txt is a comma, and for files with a .tab extension, a tab. To use an input table with a nonstandard delimiter, you must first specify the correct delimiter used in the table using a schema.ini file.

  Learn more about working with tabular text files

• If the input table does not have an ObjectID field, you will not be able to make selections or add joins to the resulting layer. Many delimited text files or tables from OLE DS connections do not have ObjectID fields.

Syntax

MakeXYEventLayer_management (table, in_x_field, in_y_field, out_layer, {spatial_reference}, {in_z_field})

Parameter	Explanation	Data Type
table	The table containing the X and Y coordinates that define the locations of the point features to create.	Table View
in_x_field	The field in the input table that contains the x-coordinates.	Field
in_y_field	The field in the input table that contains the y-coordinates.	Field
out_layer	The name of the output point event layer.	Feature Layer
spatial_reference (Optional)	The spatial reference of the coordinates in the X and Y Fields defined above. This will be the output event layer's spatial reference.	Spatial Reference
in_z_field (Optional)	The field in the input table that contains the z-coordinates.	Field

Code Sample

MakeXYEventLayer example (Python window)

The following Python window script demonstrates how to use the MakeXYEventLayer tool.

import arcpy
arcpy.env.workspace = "C:/data"
arcpy.MakeXYEventLayer_management("firestations.dbf", "POINT_X", "POINT_Y", "firestations_points","", "POINT_Z")

MakeXYEventLayer example (stand-alone script)

The following stand-alone Python script demonstrates how to use the MakeXYEventLayer tool.

# MakeXYLayer.py
# Description: Creates an XY layer and exports it to a layer file

# import system modules 
import arcpy
from arcpy import env

# Set environment settings
env.workspace = "C:/data"
 
try:
    # Set the local variables
    in_Table = "firestations.dbf"
    x_coords = "POINT_X"
    y_coords = "POINT_Y"
    z_coords = "POINT_Z"
    out_Layer = "firestations_layer"
    saved_Layer = r"c:\output\firestations.lyr"
 
    # Set the spatial reference
    spRef = r"Coordinate Systems\Projected Coordinate Systems\Utm\Nad 1983\NAD 1983 UTM Zone 11N.prj"
 
    # Make the XY event layer...
    arcpy.MakeXYEventLayer_management(in_Table, x_coords, y_coords, out_Layer, spRef, z_coords)
 
    # Print the total rows
    print arcpy.GetCount_management(out_Layer)
 
    # Save to a layer file
    arcpy.SaveToLayerFile_management(out_Layer, saved_Layer)
 
except:
    # If an error occurred print the message to the screen
    print arcpy.GetMessages()

Environments

Current Workspace

Licensing Information

ArcView: Yes

ArcEditor: Yes

ArcInfo: Yes