Le portail francophone de la géomatique

This essential resource offers GIS professionals and students the programming skills to create state-of-the-art GIS applications using MapObjects and Visual Basic. Developing GIS Solutions with MapOjects and Visual Basic teaches GIS programming in a complete hands-on environment. This how-to manual provides instruction in how to use the latest version of the popular MapObjects ActiveX control from leading GIS application developer ESRI. Along the way, readers will gain a hands-on introduction to Visual Basic (VB) programming through practice VB programs utilizing MapObjects. GIS topics such as spatial selections, thematic mapping, overlays, map projections, and web-based GIS are all addressed and explored thoroughly using a blend of thought-provoking software design discussions, detailed examples, and carefully crafted exercises.

This guide to creating a dynamic GIS data model helps database managers design a schema that has comprehensive and descriptive query definitions, a user-friendly cartographic display, and increased performance standards. The five steps for taking a data model through its conceptual, logical, and physical phases, including modeling the user’s view, defining objects and relationships, selecting geographic representations, matching geodatabase elements, and organizing the geodatabase structure are studied in detail. A look at nine decision points that deal with concerns common to all data modeling exercises, such as validating feature geometries, modeling linear networks, managing raster data, and labeling map features help database managers fine-tune their GIS data models. Several design models for a variety of applications are considered including addresses and locations, census units and boundaries, stream and river networks, and topography and the base map.

This book explains what GIS component technology means for managers and developers. The first half is oriented toward decision-makers and technical managers, and explains the general business case for the use of software components, trends in component technology, why the GIS industry needs software components, and how they are applied. The second half of the book is oriented toward programmers. It illustrates, through hands-on tutorials using Visual Basic and ESRIÆs MapObjects product, how to use GIS software components to create, display and query geographic data. A companion CD-ROM includes an evaluation copy of MapObjects and tutorial code.

This conceptual overview introduces and explains the concept of geodatabases-object-oriented data models-which are introduced in ArcInfo 8, the world's most advanced Geographic Information System (GIS) software package. Included are explanations of what models are and how they represent reality, how GIS data is structured in digital form, extending the power of databases, and making models of everything from streams to electrical power grids. Users will be able to make their datasets "smarter" by defining the relationships between them and endowing them with specific behaviors. These new characteristics are explained and highlighted with hundreds of map illustrations and diagrams.