Fig. 3From: Quantifying spatial accessibility of general practitioners by applying a modified huff three-step floating catchment area (MH3SFCA) methodThe third step of the MH3SFCA method. The accessibility index \(A_{i}\) is computed by summing up the products of the \(Huff_{ij}\), \(R_{j}\) and \(W_{ij}\) values for the reachable supply locations \(j\). As no subzones are used in this modified version, the weights are the individual weightsBack to article page