Quantitative Evaluation of Spatial Interpolation Models Based on a Data-Independent Method - Advances in Data, Methods, Models and Their Applications in Geoscience - page 64

whole. On the contrary, the contours of IDW and MC display evident deformation and
distortion, especially an obvious bull's eye effect appears for IDW. By contrast, contours of
MSM which shares a similar interpolation theory as IDW maintain a better shape without
the bull's eye effect, for its improvement in the weight function. As a result, it has been
proved again that weight allocation and its corresponding spatial relationship between
interpolated points and known points are the ultimate causes for the results of different
interpolation methods.

S2 IDW Kriging

MC NNI MSM

Fig. 9. Contour comparison among different interpolated surfaces from non-error original
data (cell size = 1m)