process-oriented approach that focuses on analyzing individual discussions for an ongoing event or activity. A web-based PGIS platform facilitates sharing knowledge with instant and real time participation. It transforms the contexts, such as photographs, personal observations, and other ancillary information (KML files), into extended attributes of map layers. In an urban area of a developing country, such as Accra, Ghana, detailed information about neighborhoods is obstacle. This thesis assumed that we will be able to gather detailed information by adding areal and contextual meanings to the map layers of Accra through a PGIS platform. In the study of Accra's neighborhoods, the researchers found that one's living environment affects how one will live; thus, the boundaries matter. The use of georeferenced census and survey data to define and differentiate neighborhood boundaries has highlighted the scale and aggregation issues known as the modifiable areal unit problem (MAUP) within current geospatial techniques. This work confirms that PGIS is a potential resolution to MAUP, which is supported by quantitative and qualitative analyses of a userbased survey.
