The Design and Specification of a Visual Language: An Example for Customising Geographic Information Systems Functionalities
| dc.contributor.author | Paterna , F. | en_US |
| dc.contributor.author | Campari, I. | en_US |
| dc.contributor.author | Scopigno, R. | en_US |
| dc.date.accessioned | 2014-10-21T07:32:16Z | |
| dc.date.available | 2014-10-21T07:32:16Z | |
| dc.date.issued | 1994 | en_US |
| dc.description.abstract | In this paper the design of a visual program editor and its specification using formal grammars are discussed. We consider an environment to specify, analyse and execute visual programs for a Geographical Information System (GIS). The lack of sophisticated user interfaces is one of the major drawbacks to Geographical Information Systems, particularly for people without a sound background in computer science. The use of a visual language approach is useful in order to hide the plethora of basic GIS functions, while providing ready- to-use tools to solve users tasks. The visual environment provides users with higher level interfaces- it is based on the module concept, which is conceived as a software building block that implements a solution to a general basic task and is presented to the user through an interactive frame. Complex GIS queries can be carried out by interconnecting modules into flow networks, using a direct manipulation approach. | en_US |
| dc.description.number | 4 | en_US |
| dc.description.seriesinformation | Computer Graphics Forum | en_US |
| dc.description.volume | 13 | en_US |
| dc.identifier.doi | 10.1111/1467-8659.1340199 | en_US |
| dc.identifier.issn | 1467-8659 | en_US |
| dc.identifier.pages | 199-210 | en_US |
| dc.identifier.uri | https://doi.org/10.1111/1467-8659.1340199 | en_US |
| dc.publisher | Blackwell Science Ltd and the Eurographics Association | en_US |
| dc.title | The Design and Specification of a Visual Language: An Example for Customising Geographic Information Systems Functionalities | en_US |