Page 34 - C:\Users\Evans Moetji\Desktop\DPSA Guideline Digital Flipbook\

GENERIC STEP-BY-STEP APPROACH STEP TWO

ACTIVITY 1: DEFINE SPATIAL DATA REQUIREMENTS

Consider the following when identifying the spatial data that are needed for the accessibility study:

 The strategic priorities, the service delivery model of your department and beneficiaries of the services
that are provided.
 The objectives, scope and deliverables of your study that will assist in identifying specific data
requirements, including the level of detail required.
 The data standards which are applicable to the capture and maintenance of spatial information in your
department.

You will need information on your service points, service

beneficiaries and the available movement networks that they use

to travel to service points.

Generally data that are required to conduct accessibility studies include:

 Existing service point location data of your department.
 Population demographic data on the beneficiaries of your services.
 Comprehensive and accurate data on national, main, secondary and tertiary roads.
 Socio-economic and other data in relation to particular factors that might have to be considered, e.g.
poverty, unemployment, crime, daytime population, and education and health statistics.
 Service point data of other departments and government institutions that provide complementary
services.
 Administrative boundaries such as provinces and municipalities.
 Human settlement data including urban, rural and remote sparsely populated areas.
 Data on geographic barriers that could impede travel to service points, such as impassable rivers and
mountains and poor road conditions.

ACTIVITY 2: ACQUIRE SPATIAL AND OTHER DATA FROM
EXTERNAL SOURCES

There are various ways of collecting and acquiring the data that you need. The first point of call to
find available spatial information should be the Spatial Metadata Discovery facility of the SA Spatial
Data Infrastructure which can be accessed at http://www.sasdi.gov.za
The first call to finding available spatial information should be the

Spatial Metadata Discovery facility of the South African Spatial

Data Infrastructure.

The main purpose of the SASDI website is to promote the use and sharing of spatial information and to
provide an environment that allows for coordination and cooperation amongst all stakeholders regarding
access to spatial information.

The Electronic Metadata Catalogue (EMC) which is hosted on the SASDI website is a web-based
application that allows users to search and discover spatial information resources by querying the
associated metadata records contributed by organs of state.

29 29