عنوان مقاله [English]
Currently, Geographic Information Systems (GIS) are useful software packages in which many tools and models are as strange for users as a factory of robot assembly for a simple worker (Barrow, 1991). Unfamiliar terms limit GIS application and make users unaware of the fact that a set of data is the product of a long-term process that significantly limits data usability. There are methods for description of spatial data which are informally common.
Today in many countries the process of preparation of basic (benchmark) coverage maps has replaced new automatic methods. But in many mapping machines the preparation of maps is still in the form of production and storage of copies of maps on various scales. There are different reasons for this fact, including:
Tools necessary for production and implementation of different stages of generalization of geographic data are not available;
Suitable system for multiplication and spread of new information resulted from a series of data is not possible to provide;
The process of correction of vast data needs great amount of time. (Muller et al., 1995)