Jason Heppler is the senior web developer at the Roy Rosenzweig Center for History and New Media and an adjunct professor in the Department of History and Art History at George Mason University.
2025-11-24
We are in the process of checking the arithmetic of the Bills of Mortality, both its internal consistency as well as the accuracy of our work, and are making our Jupyter notebooks of our analysis public. The notebooks take into account transcription errors, printing mistakes, illegible data, or …
2025-08-25
Visualizing data quality and illegibility patterns over time
2025-07-02
Visualizing the seasonality of causes of death
2025-04-22
Mapping text analysis on suicides, drownings, and killings in the Bills of Mortality.
2025-03-24
Sparklines of plague and non-plague parish deaths
2025-02-27
Mapping plague and non-plague deaths
2024-12-12
Charting the causes of death from general bills
2024-10-04
Graphing the causes of death over time
2024-10-04
Graphing the causes of death per week
2023-06-27
Charting the causes of death
2023-06-06
Charting the causes of death from weekly bills
2023-03-27
Charting the completeness of our transcriptions
2022-11-21
We are in the process of building out a data API to support the data work we’re undertaking with the transcription of the plague bills. We anticipate hundreds of thousands of rows of data by the end of our transcription process, and we wanted an easy and efficient way to work with that data. …
2022-11-11
One of the ways we are using the transcribed bills of mortality is in data visualization and mapping, in an effort to ask new questions and revisit old ones. At the Southern History Association’s annual meeting in Baltimore, we presented preliminary work on data visualization and the data API. An …