Geographically Weighted Regression of Park Acreage Density. Spatial distribution of local t-values from park acre density GWR linear regression. Purple areas suggest positive association between park acre density and the independent variable, white areas suggest no statistically significant relationship, and gold areas suggest negative associations.
Maroko et al. International Journal of Health Geographics 2009 8:34 doi:10.1186/1476-072X-8-34