run the app with
python -m jiraviewer --help
Export date from jira with: i.e. find the sprints you want to export
project="YOUR_JIRA_PROJECT" and sprint in(2611,2612)
then export with
https://YOUR_JIRA_INSTANCE/rest/agile/1.0/board/YOUR_BOARD_ID/issue?expand=changelog&startAt=0&maxResults=1000&jql=YOUR_JQL_QUERY
python -m jira_stats load issue.json
If you need to split the export then you can append issues to the issue database
python -m jira_stats load issue-1.json -a
And if you want to restart from fresh you should clean the databse
python -m jira_stats clean