| Titre | Gérer l'environnement avec des S.I.G. Mais qu'est-ce qu'un S.I.G. ? / Managing environment with G.I.S. But what is a G.I.S. ? | |
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| Auteur | Thierry Joliveau | |
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Revue |
Géocarrefour Titre à cette date : Revue de géographie de Lyon |
| Numéro | volume 71, no 2, 1996 Système d'information géographique et gestion de l'environnement | |
| Page | 101-110 | |
| Résumé anglais |
Geographical information systems are not software tools but information systems created to respond to precise needs and to establish a definitive modelling of the real world. Among the four components of a G.I.S. (methods, technical tools, information and structure) the text presents the two which are the most undifferentiated. The technical component integrates various and often multiple forms of software. The information component is organised around a data base which is either primary or derived in character, and of internal or external origin ; it is the quality of this data which determines the ability of the system to respond to its objectives. Geographical Information Systems can be classified on a continuum in relation to their intrinsic characteristics according to a sequence of development "inventory/analysis/decision", or according to the decisional level to which they correspond. Environmental geographical information systems have developed in the context of complex models. This complexity relates both to the description of objects and the modelling of their operation and dynamics, as well as to the need in decision making to take account of numerous actors who are often in disagreement. Imperceptibly geographical information systems have become an aid to spatial decision making. This should lead geographers to implicate themselves much more in this field at both a conceptual and operational level. Source : Éditeur (via Persée) |
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| Article en ligne | http://www.persee.fr/web/revues/home/prescript/article/geoca_0035-113x_1996_num_71_2_4333 |
