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ENV510 Landscape Ecology and GIS
Definitions
& descriptions | Concepts
& issues | Setting
up GIS | Using
GIS
| Applications
Representation
| Concept models | Data
models | Spatial data
| Referencing | Data
issues | Accuracy
| Error | Management
The 'entity'
model is the most common model of world. The approach is based on the concept
that space is populated with entities
or objects. This sort of approach means that the entity is defined, its attributes
are listed, and its boundaries and location defined.
The 'continuous fields' approach is the simplest model of the world. It represents geographical space in terms of continuous coordinates at two or three dimensions. The attribute is assumed to vary continuously and smoothly over space.
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