GIS data consists of a spatial component and a tabular component. The spatial
component includes spatial co-ordinates (e.g. latitude and longitude)
describing the location and shape of spatial features. The tabular component includes
attributes describing the characteristics of the spatial features. In ArcView,
the spatial features are displayed in a view, while the attributes can be used to
classify the spatial features and thereby defining how they should be
displayed.
ArcView can handle both spatial and non-spatial data sets. With spatial data
we mean GIS data where the spatial and tabular components are stored permanently
in a unified set of files (i.e. ARC/INFO coverages or ArcView shapefiles).
However, non-spatial tabular data can be joined or linked (through common IDs) to
a spatial data set and will then serve as an extended attribute table.
You may extend your INSROP GIS database by adding your own data, either data
prepared in ARC/INFO format, as ArcView shapefiles or any other format ArcView
can import, or by creating ArcView shapefiles from ASCII files. To create
ArcView shapefiles from ASCII files, the following INSROP GIS functions are available:
Making your own data useful in INSROP GIS
Documentation of INSROP GIS data
Documentation of INSROP GIS data