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ENV510 Landscape Ecology and GIS
Definitions
& descriptions | Concepts
& issues | Setting
up GIS | Using
GIS
| Applications
Representation
| Spatial data | Referencing
| Data issues
| Accuracy
| Micro-level | Macro-level
| Classification | Completeness
| Time | Lineage
| Usage | Error
| Management
Some data
sets are time sensitive. Time is usually reported at the date of collection
of the source material which can be an important attribute in GIS data sets.
Time of
data collection is particularly important in comparisons of land cover change
generated from aerial photographs. For example, the time of year at which aerial
photographs are taken can seriously affect the appearance of land cover features
and cause problems associated with interpretation and comparison.
Whether data is up to date can also affect the accuracy of the GIS application.
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