Using continuous classification (specifically zonation in this study) it is possible to save continuity of changes in natural phenomena while representing them. Fuzzy Sets Theory is a proper tool to study and represent this continuity. As a case study in application of Continuous Zonation, fuzzy clustering among many other pattern recognition methods was applied to study erodability of Tajan river watershed. The results have been compared with traditional PSIAC method and have been represented

more »

... s continuous erodability maps by using pixels value combination method. The maps show that even in area that a class is dominant, changes in erodability are visible. Also classes, which do not really exist and are only the artifacts of crisp boundary classification, are omitted. Transitional changes can be modeled similar to real gradual ones in nature.