What does network analysis in GIS focus on?

Network analysis in GIS primarily emphasizes analyzing spatial relationships within interconnected systems, such as transportation networks, utility grids, and social networks. This type of analysis allows users to understand how different locations are connected and how those connections affect accessibility, routing, and flow dynamics.

For example, in transportation network analysis, GIS can be used to assess the best routes for vehicles to take, considering factors like distance, travel time, road conditions, and traffic patterns. By focusing on the relationships and interactions within the network, GIS can help inform decisions related to urban planning, logistics, emergency response, and environmental studies.

The other options do not capture the essence of network analysis. While visualization of spatial data is an important aspect of GIS, it does not specifically pertain to network interactions. Creating raster datasets relates more to the representation of continuous data and does not address network relationships. Similarly, converting physical maps to digital formats concerns the digitization process rather than the analysis of connected systems. Thus, the correct answer effectively highlights the core focus of network analysis in GIS.