Research Journal of Agricultural Science, 42 (3), 2010 786 THE ANALYSIS OF THE VECTOR SYSTEM OF THE CADASTRAL MAPS FOR THE CREATION OF A GIS PROJECT Cosmin POPESCU 1 , Pier Paolo BALBO 2 , Adrian ŞMULEAC 1 , Valeria CIOLAC 1 , Mihai HERBEI 1 Banat’s University of Agricultural Sciences and Veterinary Medicine, Faculty of Agricultural Sciences, Timisoara, Aradului Street, no. 119, RO-300645, Romania, 2 Università di Roma La Sapienza Corresponding author: procadtm@gmail.com Abstract: The output of a remote sensing system is usually an image representing the scene being observed. A further necessary step of image analysis and interpretation is required in order to extract useful information for the GIS from the image. Remote sensing is technology of acquiring information about material objects, area, or phenomenon, without coming into physical contact with them. The value of a GIS is directly related to the quality and currency of its internal data. Remote sensing offers a suite of tools for quickly creating current, consistent datasets for input to a GIS. We can say that remote sensing is a young branch of terrestrial measurements. In the past years, remote sensing has made great progress, given that the first remote studying and recording methods were mentioned four or five decades ago. The research work on the land surface performed in air and outer space with remote sensing methods provides most valuable information for various fields of activity such as agriculture, silviculture, geology, pedology, hydrology, cartography, natural resource prospection and valuation, environment (soil, water and air) monitorisation etc. The chief objective of the thesis is to create the methodological framework for the use of satellite data in creating a GIS of soil, farmland and cadastre resources for a better management of agricultural, cadastre and pedological activities. Of special value are the results obtained by the recording, transmitting, processing and interpreting of remote sensing data. They provide new ways of investigation in terrestrial measurements and other fields as well. Remote sensing and GIS allows permanent direct access to ped logic and agriculture information at different times, without altering the state of the surface. Key words: GIS, remote sensing, vectorisation INTRODUCTION The vector system is based on graphic primitives. A graphic primitive is the smallest nondivisible element used in creating and storing vector images and recognised as such by the system. The vector system is based on five graphic primitives: the POINT, the ARC (the line that unites the points); the NODE (the point that marks the ends of and arc or is within the contact of the arcs); the POLYGON (an arc-delimited area); the SOLID (the area-determined solid). MATERIAL AND METHOD Simple cartographic objects are made of primitives. More complex cartographic objects, as well as geographic objects are obtained by combining simple objects. 1. The POINT is the basic unit in geometry or photogrammetric capture. It must not be confused with the cell in the raster representation, because it has neither area nor dimensions. It is a positioning in space with 2 or 3 dimensions. The records on magnetic support will contain numbers. Each point will be recorded in a file under the form of a table with two columns. The first column includes an identification number (which is unique), and