Document Type : Research Paper

Author

• Mahdi Modiri

Associate Professor of Urban planning, Malek-Ashtar University of Technolog

Abstract

In order to process cartographic information, it is necessary to determine the topological structure of data so that database becomes intelligent and ready for analysis and transfer. After collection of various data, a database with consistent topological and geometric structure should be created. This task begins with conversion of all types of data and their matching on a single scale and selection of a single image or network coordinate system. But in raster computer maps and GIS there is need for something else. All pixels must be of same shape and size.