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Strategic planning
Accepted spatial data formats from contractors
The purpose of these guidelines is to provide information about the GIS data formats that can be returned to City of Greater Geelong (COGG).

GIS at City of Greater Geelong

The City of Greater Geelong has a highly functional and detailed GIS system that is used widely across council.

This document aims to assist council contractors and consultants of the formats that can be provided back to council which may then integrate back into the councils GIS system.

GIS platform details

City of Greater Geelong uses Environment System Research Institute (ESRI) platform.

The ESRI platform is one of the most widely used and accepted systems in the world. The formats listed below should be projected using the map projection listed in this document.

Acceptable vector formats

  • ESRI Shapefile - .shp
  • File Geodatabase - .gdb
  • Personal Geodatabase - .mdb

Acceptable raster formats

  • GeoTiff - .tif
  • Jpeg/Jpeg2000 – .jpg
  • ECW - .ecw

Raster data should be in the most appropriate image resolution according to each project’s desired outcome.

Each raster image should also feature an associated world file (.tfw .jgw) to ensure the geo-reference of the images is correct.

Map projection details

All of the City of Greater Geelongs spatial geodatabase PLACES is required to be projected using the Map Grid of Australia (MGA) Zone 55 on the Geocentric Datum of Australia 1994 (GDA94).
 

MGA Zone 55

Projected Coordinate System

Name: GDA 1994 MGA Zone 55
Projection: Transverse Mercator

Parameters

False Easting: 500000
False Northing: 10000000
Central Meridian: 147.000000
Scale Factor: 0.999600
Latitude Of Origin: 0.000000
Linear Unit: Meter (1.000000)

GDA 94

Geographic Coordinate System:

Name: GCS GDA 1994
Angular Unit: Degree (0.017453292519943299)
Prime Meridian: Greenwich (0.000000000000000000)
Datum: D GDA 1994
Spheroid: GRS 1980
Semimajor Axis: 6378137.000000000000000000
Semiminor Axis: 6356752.314140356100000000
Inverse Flattening: 298.257222101000020000

Need to know more...

Digital files smaller than 20MB can be delivered by email (gis@geelongcity.vic.gov.au).

For large files our preferred method is web/cloud-based file sharing services such as:

  • OneDrive
  • Dropbox
  • Hightail

If necessary files on CDs or USB device can be sent to:

GIS - Applications Management Unit Digital Information & Technology Wurriki Nyal Wadawurrung Country 137-149 Mercer Street Geelong VIC 3220