GIS

The Geographical Information Systems (GIS) unit mainly serves the requirements of census and survey operations in the provision and updating of maps. Presently this unit is using orthophoto base maps which dates back to 1999 to update land structures (mainly housing) which are drawn manually during field exercises. These are then systematically coded and digitized for the update of the Geo-referenced dwelling frame. The objective of such a frame is that it provides an up-to-date sampling frame needed for conducting household based surveys and censuses.

A quality census starts with clearly locating all dwellings in the country. This enables every household to be visited, thus ensuring complete coverage of every person in all parts of the country.

The geo-referenced dwelling frame provides the location of each dwelling and is used for the delineation of enumeration areas. It also provides a list of household heads against which census data is collected. Other uses include matching and cross-checking census records in the post-enumeration survey.

The GIS unit is presently engaged with the compilation and printing of Enumeration Maps for the Population and Housing Census exercise in August 2010 (see sample map).

It is also imperative that a process of continuous maintenance be put in place to ensure a complete and updated frame for future household and economic surveys.

GIS Maps can be obtained from the download list HERE.

[Sample Thematic Map below, click to enlarge]