This folder contains scripts used to preprocess JHU data on Covid-19. It consists of daily_jhu_update.R, which was used to clean JHU CSSE's daily reports and time series data. Related to this script is covid_functions.R, which contains customized functions that are used in daily_jhu_update.R.

Not all data cleaning operations are documented in daily_jhu_update.R. Note that daily reports prior to March 18, 2020, required additional data cleaning operations. A separate script, i.e. replication_older_data.R, can be used to clean older data.

Running daily_jhu_update.R after running replication_older_data.R will ensure data are processed in their entirety.