Inverse Distance Spatial Weights Matrix

Creates an inverse-distance SWM, from X and Y coords.Can be used on very large datasets

Description

Uses x,y coordinates to produce distance-based spatial weight matrices useful for spatial econometric regressions. The user is asked to input x and y coordinates, as well as a lower and upper bound threshold for the neighborhood.
The code is adapted from a previous version by Shawn Bucholtz of the USDA. A correction is made to set the (i,i) th elements (the diagonals) equal to zero.
Unlike other similar programs, this one can be used on very large datasets.

Acknowledgements

This file inspired Inverse And Determinant Of Square Matrix.

• MATLAB release: MATLAB 7.6 (R2008a)

[Bumseok]