What is GIS?
The Geographic Information System (GIS) is council's on-line mapping tool. It can be used to display, manipulate, and analyse geographic information.
GIS can be used to visualise data from databases, allowing easier interpretation of that data.
Council provides some GIS data via an Open Data Portal. From here, you can view the data and download Council GIS data into Shapefile or CSV formats. This data, which includes underground services, kerb-lines, District Plan zones and contours, is available under the Creative Commons licence agreement.
How does GIS work?
GIS combines layers of information to give you a better understanding of a location. It also represents features as geographic layers.
It can be used, for example, to:
- Verify location
- Create planning models
- Monitor environmental conditions
- route and track vehicles
Tools for map display, query, geometric processing, or analysis are built into GIS software packages and can be tailored to specific needs.
GIS data most commonly exists in one of two formats: vector or raster.
- Vector data shows discrete features such as points (manholes), lines (roads), or polygons (parcel boundaries).
- Raster data shows continuous data made up of pixels (aerial photography).