Fig. 7From: Integration of a Kalman filter in the geographically weighted regression for modeling the transmission of hand, foot and mouth diseasePotential HFMD risk regions and the separate error variations of incidence filtering. (a) Distribution of risk regions. Error variations of incidence filtering of (b) 1st category; (c) 2nd category; (d) 3rd category. Shandong geographic database were provided by National Geomatics Center of China (http://www.ngcc.cn/ngcc/) at a 1:1,000,000 scale as the layer’s attribute. Thematic mapping was implemented in the ArcGIS platform (ESRI Inc)Back to article page