Figure 8From: Exploratory disease mapping: kriging the spatial risk function from regional count dataEmpirical semivariograms and fitted exponential models from detrended and trend-contaminated smoothed prevalences. Robust empirical semivariograms of the detrended (black dot) and trend-contaminated data (circle) along with the WLSE fitted spherical models for the detrended (solid line) and the trend-contaminated (dashed line) data with observations 3 and 13 removed.Back to article page