Convert Spatial Weights Matrix to Table (Spatial Statistics)

Summary

Converts a binary spatial weights matrix file (.swm) to a table.

Illustration

Swm to DBF conversion
Swm files may be converted to .dbf tables and edited.

Usage

Syntax

ConvertSpatialWeightsMatrixtoTable(Input_Spatial_Weights_Matrix_File, Output_Table)
ParameterExplanationData Type
Input_Spatial_Weights_Matrix_File

The full pathname for the spatial weights matrix file (.swm) you want to convert.

File
Output_Table

A full pathname to the table you want to create.

Table

Code sample

ConvertSpatialWeightsMatrixtoTable example 1 (Python window)

The following Python Window script demonstrates how to use the ConvertSpatialWeightsMatrixtoTable function.

import arcpy
arcpy.env.workspace = "c:/data"
arcpy.ConvertSpatialWeightsMatrixtoTable_stats("euclidean6Neighs.swm", "euclidean6Neighs.dbf")
ConvertSpatialWeightsMatrixtoTable example 2 (stand-alone script)

The following stand-alone Python script demonstrates how to use the ConvertSpatialWeightsMatrixtoTable function.

# Create a Spatial Weights Matrix based on Network Data 

# Import system modules
import arcpy

# Set property to overwrite existing output
arcpy.env.overwriteOutput = True

# Local variables...
workspace = r"C:\Data\USCounties\US"

# Set the current workspace (to avoid having to specify the full path to the 
# feature classes each time)
arcpy.env.workspace = workspace

# Create Spatial Weights Matrix 
# Process: Generate Spatial Weights Matrix... 
swm = arcpy.GenerateSpatialWeightsMatrix_stats("USCounties.shp", "MYID",
                                               "euclidean6Neighs.swm",
                                               "K_NEAREST_NEIGHBORS",
                                               "#", "#", "#", 6) 

# Dump Spatial Weights to Database Table
# Process: Convert Spatial Weights Matrix to Table...       
dbf = arcpy.ConvertSpatialWeightsMatrixtoTable_stats("euclidean6Neighs.swm",
                                                     "euclidean6Neighs.dbf")

# Now you can edit the spatial weights (add, subtract and alter
# neighbors and weights)

# Read weights from table back into Spatial Weights Matrix format
# Process: Generate Spatial Weights Matrix... 
swm = arcpy.GenerateSpatialWeightsMatrix_stats("USCounties.shp", "MYID",
                                               "euclidean6Neighs.swm",
                                               "CONVERT_TABLE",
                                               "#", "#", "#", "#", "#", "#",
                                               "euclidean6Neighs.dbf")

Licensing information

  • Basic: Yes
  • Standard: Yes
  • Advanced: Yes

Related topics