Titlebook: Advances in Spatial Databases; 2nd Symposium, SSD ‘ Oliver Günther,Hans-J?rg Schek Conference proceedings 1991 Springer-Verlag Berlin Heide

AND

nurture

978-3-540-54414-2Springer-Verlag Berlin Heidelberg 1991

remission

The combination of spatial access methods and computational geometry in geographic database systemsapplications of the very active research area named spatial database systems. Consequently following the database approach, a GIS has to be seamless, i.e. store the complete area of interest (e.g. the whole world) in one database map. For exhibiting acceptable performance a seamless GIS has to use s

松果

FI-Quadtree: a new data structure for content-oriented retrieval and fuzzy search,tion of images containing whichever pattern introduced beforehand by the user. We propose a data structure valid for this kind of manipulation, the Full Inverted Quadtree (FI-Quadtree). The structure represents a set of images within a single quadtree. We analyze the distribution of the data in the

功多汁水

obsolete

Initiative

爭(zhēng)吵加

Towards a toolbox for geographic user interfaces,s been done recently in this area, each system usually has its own . user interface built from scratch, and there is no user interface model general enough for customizing the presentation of such applications..This paper presents a conceptual model for describing user interfaces of systems manipula

Tidious

The management of the ambiguities in a graphical query language for geographical information systems to hide a syntactic query language from end-users who do not usually think in terms of algebraic query language..Queries addressed to a Geographical Information System are very often divided into two classes : the network management oriented queries and the thematic oriented queries. We briefly pr

MAIM

Geo-SAL: A query language for spatial data analysis, to be relatively uncomplicated, leaving deeper processing functions to specialized host programs..In contrast with this view, the language SAL [Arnb80] was designed with the goal of being able to support stepwise, in-depth analysis of data, stored and managed as relations in a specially designed st