Materials of the International Conference
50th Anniversary of the International Geophysical Year
and Electronic Geophysical Year

16-19 September 2007 • Suzdal, Russia

Web-distributed analytical GIS

V. G. Gitis1, A. P. Vainshtock1, and A. N. Shogin2

1Kharkevich Institute of the Problems of Information Transfer, Russian Academy of Sciences, Moscow, Russia

2All-Russian Institute of Scientific and Technical Information, Russian Academy of Sciences, Moscow, Russia

Abstract

In recent years, investigations in the area of geoinformatics, directed at the creation of distributed geoinformation environment, has been commenced. In 2006, the ESRI company, in particular, defined this problem as a leading one in the area of geoinformatics. The ESRI company planned to develop distributed geoinformation environment GeoWeb (ArcReview no. 1 (36), 2006). In Russia, works in this area are carried out within the framework of the Presidium of RAS Programme "Electronic Earth." Development of the basic version of the web geoinformation system is the most significant result of this project. One of the crucial elements of geoinformation systems includes web-distributed analytical GIS GeoProcessor 2, COMPAS V and GeoTime II. These systems are directed at solving two types of tasks: (1) Listing of the interdisciplinary geographical information (GI) and assessment of interconnections between its components, and (2) Finding multidimensional relations in GI, prediction, detection and recognition of target-oriented, not known in advance stationary and dynamic features of studied environment. Given technology is created with consideration of requirements based on our experience in development and application of web analytical GIS for supporting research in Earth sciences, economics, sociology and other disciplines. The first requirement is to provide possibility to fulfill combined geoinformation analysis of data of different sort. In many cases integrated analysis is necessary due to three factors: (A) interrelation of processes under consideration, (B) lack of possibility of direct measurement of their key features, (C) volume of observations is not enough and noises effect the results of measurements – level of noises is comparable to the level of useful signal. In this situation consistent solutions could be found with the help of methods allowing integrated use of all available multidisciplinary data on studied process and expert knowledge obtained. The second requirement relates to the necessity of using GI from different data files simultaneously when proceeding analysis. These files are often situated at the points of data collection and actualization: on spatially distributed servers and on user's PC. The next requirement is caused by the fact that in scientific research it is often necessary to have opportunity of connection of specialized plug-ins to a basic system configuration, which could be situated, the same as data, either on spatially distributed servers or on user's PC. The fourth requirement relates to the provision of opportunity of saving user's results that comprise geoinformation layers, obtained in the course of work, and GIS-project, consisting of metadata of initial and obtained data, and of plug-ins metadata. The fifth requirement is based on a significant role of visualization when studying GI. Clear visualization is provided by a high interactivity of the management of analysis process, and by high-quality cartographic data display during each stage operation of analysis. Finally, the last requirement relates to a provision of compartibility of data formats with the most successful GIS standards. In the modern information technologies listed requirements are well realized either with the help of web applications installed in advance on user's computer, or with the help of applets. Web GIS GeoProcessor 2, COMPAS V and GeoTime II are written in object-oriented language Java. This provides independence of programme from user's platform, and also gives opportunity to realize it in Java-machine or as an applet in any modern browser, or as an ordinary local programme.

Citation: V. G. Gitis, A. P. Vainshtock, and A. N. Shogin (2007), Web-distributed analytical GIS, in: Materials of the International Conference '50th Anniversary of the International Geophysical Year and Electronic Geophysical Year', GC RAS, Moscow, doi:10.2205/2007-IGY50conf.

© 2007 Geophysical Center RAS and authors


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