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ANNEXURE 2: IDENTIFYING OPTIMUM LOCATIONS

Knowing where existing service points, the population and roads will allow you to identify
potential sites for new service points. Although this basic approach is easy to use it is very
limited as it does not consider factors such as the actual distances or times that people travel
using existing modes of transport to access service points, or the capacity constraints that
service points may have in delivering services to people within the area.

To use the visualisation approach you will have to do the following:
Download Google Earth from the web page:

 Go to Google Earth on their web page at http://earth.google.com/intl/en/download-
earth.html.

 Click on the “Agree” and “Download” button and a window will open to ask you whether
you want to “Save” or “Run”.

 If you click on “Save”, the Google Earth software will be saved to your computer before you
do the installation. If you click on “Run”, the Google Earth software will be immediately
installed on your computer.

Capture your existing service point data in Google Earth

 Export your service point data from the existing software on your GIS (e.g. ArcMap,
MapInfo) and import it into a Google Earth KML or KMZ file format (.kml or .kmz). Most
GIS software has the ability to export their data to Google Earth file formats.

 Export the other layers of information (e.g. administrative boundaries, population
statistics) and overlay them on the satellite imagery and service point data in Google
Earth. If the service point data is not in a spatial format, it can be captured directly in
Google Earth by using the “Add Placemark” tool, as follows:
• Obtain a list of the service points with their names and the geographic places where
they are located. If the service points are located in a major urban area you can also
get their street addresses.

• Enter the name of the geographic place (e.g. “Cofimvaba, South Africa”) into the
“Fly To” window and click on the “Begin Search” button. This will “fly” you into the
geographic place.

• With the aid of local knowledge on the location of service points you can identify their
geographic locations and add Place Marks where they are situated.

• If you have the street address of a service point (e.g. “22 Smith St, Durban”) you can
enter this information into the “Fly To” window and Google Earth will take you to the
exact location where the service point is located. A Place Mark can then be put on
the building where the service point is situated.

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