A Pictorial Query Language for Geographic Features in an Object-Oriented Environment (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• A Pictorial Query Language for Geographic Features in an Object-Oriented Environment (Articolo in rivista) (literal)

Anno

• 1999-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1006/jvlc.1999.0136 (literal)

Alternative label

• Ferri F., Massari F., Rafanelli M (1999)
  A Pictorial Query Language for Geographic Features in an Object-Oriented Environment
  in Journal of visual languages and computing
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Ferri F., Massari F., Rafanelli M (literal)

Pagina inizio

• 641 (literal)

Pagina fine

• 671 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://www.sciencedirect.com/science/article/pii/S1045926X99901362 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 10 (literal)

Rivista

• Journal of visual languages and computing (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 31 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Ferri F. ISRDS-CNR Massari F., Rafanelli M IASI-CNR (literal)

Titolo

• A Pictorial Query Language for Geographic Features in an Object-Oriented Environment (literal)

Abstract

• In this paper, a visual algebra and the relative pictorial query language (PQL) for geographic information systems (GIS) are proposed and discussed. The base data structure of the object oriented model for geographical data is defined and the symbolic features used in the PQL are described. The algebra operators are formally defined, besides their properties and applicability. The use of the symbolic features to express the queries is illustrated, as well as the possible pictorial operations are considered. The used interface is part of the Scenario GIS, developed using an object-oriented environment. This PQL makes easier the formulation of a complex query and simplifies user approach to the system, maintaining a strong expressive power. Finally, an example of query and its pictorial composition on the screen is shown. (literal)

Prodotto di

• Istituto di ricerche sulla popolazione e le politiche sociali (IRPPS) (Istituto)

Autore CNR

• FERNANDO FERRI (Persona)
• MAURIZIO RAFANELLI (Persona)

Incoming links:

Prodotto

• Istituto di ricerche sulla popolazione e le politiche sociali (IRPPS) (Istituto)

Autore CNR di

• FERNANDO FERRI (Persona)
• MAURIZIO RAFANELLI (Persona)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of visual languages and computing (Rivista)