Accepted spatial data formats from contractors
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 Geelong's 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 ([email protected]).
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
Documents
Council and contractors may use a different mapping platforms which can impact what files we can use and accept from contractors.
This document explains what spatial data formats we accept from contractors.
This is helpful for any mapping project that council may be working on to assist bringing data back into council's GIS system.