RESEARCH OF USERS REQUIREMENTS FOR CREATING TOPOGRAPHIC MAP CONTENTS AIMING AT INTERBRANCH GIS CARTOGRAPHIC OPTIMIZATION

S.V.Erukov, M.A.Bazina

Verkhnevolzhskoye Aerogeodetic Enterprize

vagp@mts-nn.ru

 

The information on the Earth, its territories, characteristics of the natural and artificial objects by means of maps, are one of the society most ancient historical needs in perceprtion of world around. This interest is caused not only by scientific researches of a condition and change of the Earth shape, but also by aspiration of people to management of the political, social and economic and other territorial processes subordinated by needs of a society in rational distribution of resources with the purpose of their effective use. Maps in modern GIS are not only the initial information for fulfilment of calculation works, but also a source of the information reception for the person making decision by results of calculations. It is necessary to note, that redundancy of the information in a map placed on the screen not less than its lack complicates the correct decision making. According to purpose of maps, in conditions of above-stated spheres changing needs, evolutionary methods of the information representation on territory is the major problem of a cartographical science and manufacture.

 

In the present research the various consumers requirements to structure of the content and information representation on territory are formalized according to the theory of decision making.

 

In the report four categories of the topographical information complexity according to conditional spheres of application are presented: political, non-productive, industrial, scientific. Their characteristics are also given. The presented classification of categories, in opinion of authors, is optimum criterion of the cartographical information utility for various consumers and is applied in the further calculations as factors of utility index according to Bayesian-Laplas technique.

 

Use of four criteria (categories) is optimal, and their greater quantity does not render influence on the end result of calculations as their formalization has a subjective basis.

 

By results of researches the following data are analyzed:

- Distribution of topographical map elements in structure of operating symbols;

- Relative parameters of detail degree of the topographical information distribution, depending on application sphere;

- Relative exponents of the topographical information actuality depending on timing of its use;

- Relative exponents of the information on territory use depending on territorial problems;

 

Research of topographical map elements users needs is carried out by means of interpretation of the purposes and the problems presented in valid statutes of enforcement authorities: Federal ministries, State committees, Federal services and other enforcement authorities (59 in total). The purposes and problems of the government agencies, in full measure covering interbranch structure of social relations management, suit in the best way as a subject of researches. In the report detailed data on results of the executed researches and results of the analysis are presented.