Data for geoinformation systems

Various purpose and scale geoinformation systems (GIS) are first and foremost interfaces to arrange for data access and user–friendly control of their transformation. As a rule GIS data specifics consists in their geographic reference (bind) i.e. reference to geographic coordinates. The here presented research proposes to consider the complete GIS data transformation cycle to further implement these GIS as interfaces supporting decision making systems. Judging from the so far accumulated experience of GIS implementation and based on the available literature study it could be said that the class of these systems is extremely large. However, a special interest is now drawn to the GIS based decision making systems for managing the municipal aggregations, transportations (maritime, ground); controlling various purposes and scales monitoring systems. In general case the process of data access and transformation is assumed to be considered in the light of three abstracting levels: harmonized, integrated and fused data. The above mentioned levels possess a physical basis and really reflect the information flows propagating from measuring devices up the hierarchy. The paper is only focused on main statements and does not go into details specifying each level.