| add_duration | Add time spent in seconds on webpage |
| add_panelist_data | Add panelist features to webtrack data Add characteristics of panelists (e.g. from a survey) to the webtrack data |
| aggregate_duration | Aggregate duration of consecutive visits to a website |
| as.wt_dt | An S3 class, based on data.table, to store webtrack data |
| audience_incidence | Create incidence matrix for audience-outlet network |
| audience_network | Create audience networks |
| bakshy | Bakshy Top500 Ideological alignment of 500 domains based on facebook data |
| classify_domains | Classify domains according to prespecified classes |
| create_urldummy | Create an urldummy variable from a data.table object |
| domain_list | Domain list classification of domains into news,portals, search, and social media |
| extract_domain | Extract domain from url |
| is.wt_dt | An S3 class, based on data.table, to store webtrack data |
| isolation_index | Isolation Index In terms of news exposure, the isolation index captures the extent to which conservatives disproportionately visit outlets whose other visitors are conservative |
| news_types | News Types |
| print.wt_dt | Print web tracking data |
| summary.wt_dt | Summary function for webtrack data |
| test_data | Test data |
| test_survey | Test survey |
| vars_exist | Check if columns are present |
| wt_dt | An S3 class, based on data.table, to store webtrack data |