Fig. 3
From: Characterizing physical activity and food urban environments: a GIS-based multicomponent proposal
Development of continuous KDE variables from direct observation data. On the left, is depicts the calculating for the food environment starting with the location of all stores, continues with the Healthy Food Availability Index (HFAI) score for each one, and the next is the KDE surface weighted by HFAI score. On the right, the development for the physical activity environment. Above the location of all the street segments, continues with Pedestrian and Cycling Environment Scan (SPACES) score by each one. And in front the KDE weighted by the SPACES