So far we have demonstrated different methods of carrying out GIS analysis. Selecting the most appropriate method is very important. Some methods are quicker and give you approximate results, while others may require more detailed data and processing time. Your choice of method depends primarily on the question you would like answered, the availability of data, and how you decide to display your results. Note that in some instances a variety of methods may be required.
When determining an appropriate approach to analysis, consider the following:
The following case studies provide some examples of methods that are used to answer some common questions seen in HIV programming.