Palladio is open source software that allows users to visualize data through mapping, graphs, and tables. Data can be represented as points on a map, connected by arcs and scalable, in a list or table form and in a gallery grip layout for organization. There are also timeline and timespan filters that it did not explore.

One of the interesting features in graphs is the dynamic interface, allowing manipulation of the network graph to isolate or drill down on nodes and connections. For example, in the graph below, the topics and work performed data sets were compared highlighting some of the differences in experience and points of view (Figure 1)

Figure 2 shows the relationship between where the person was interviewed compared to where they were enslaved. The grouping suggests limited movement between the two locations, and highlights an area to compare the WPA interview data to census data to understand the paths of movement and whether the Alabama data set is representative of all the movement post-liberation. Comparing this to census data from 1860/1880 and 1930 might be an interesting follow up to this visualization.

Palladio was fairly straightforward to use, with an excellent tutorial page to help with adding data, data structure and the different functions of the software.