What is GIS?
A GIS (Geographic Information System) is councils online mapping system. It is used to display, manipulate, and analyse geographic information.
GIS can be used to visualise data from databases, allowing easier interpretation of that data.
Council has opened up some of our GIS data in the Open Data Portal. From here, you can view the contents of the data and download Council GIS data into Shapefile or CSV formats. This data, which includes underground services, kerblines, District Plan zones and contours, is available under the Creative Commons licence agreement.
How does GIS work?
A GIS combines layers of information about a location to give you a better understanding of that location. It also represents features as geographic layers.
It can be used to:
- verifying location,
- creating planning models,
- monitoring environmental conditions.
- routing and tracking vehicles,
- and much more!
Tools for map display, query, geometric processing, or analysis are built into GIS software packages which can be tailored for specific needs.
GIS data most commonly exists in one of two formats: vector or raster.
- Vector data consists of discrete features such as points (manholes), lines (roads), or polygons (parcel boundaries).
- Raster data consists of continuous data made up of pixels (Aerial Photography).