The GWmodel R package: Further Topics for Exploring Spatial Heterogeneity using Geographically Weighted Models


Lu, Binbin and Harris, Paul and Charlton, Martin and Brunsdon, Chris (2013) The GWmodel R package: Further Topics for Exploring Spatial Heterogeneity using Geographically Weighted Models. Geo-spatial Information Science, 17 (2). ISSN 1993-5153

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Abstract

In this study, we present a collection of local models, termed geographically weighted (GW) models, that can be found within the GWmodel R package. A GW model suits situations when spatial data are poorly described by the global form, and for some regions the localised fit provides a better description. The approach uses a moving window weighting technique, where a collection of local models are estimated at target locations. Commonly, model parameters or outputs are mapped so that the nature of spatial heterogeneity can be explored and assessed. In particular, we present case studies using: (i) GW summary statistics and a GW principal components analysis; (ii) advanced GW regression fits and diagnostics; (iii) associated Monte Carlo significance tests for non-stationarity; (iv) a GW discriminant analysis; and (v) enhanced kernel bandwidth selection procedures. General Election data sets from the Republic of Ireland and US are used for demonstration. This study is designed to complement a companion GWmodel study, which focuses on basic and robust GW models.

Item Type: Article
Keywords: Principal Components Analysis; Semi-parametric GW regression; Discriminant Analysis; Monte Carlo Tests; Election Data;
Academic Unit: Faculty of Science and Engineering > Research Institutes > National Centre for Geocomputation, NCG
Item ID: 5752
Depositing User: Martin Charlton
Date Deposited: 02 Feb 2015 12:04
Journal or Publication Title: Geo-spatial Information Science
Publisher: Wuhan University
Refereed: Yes
URI:

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