I have the following data rows being returned from a json webservice: bugId, OpenDate, CloseDate I would like to plot a line chart with date along the x-axis and a count of the number of bugs opened on that date and the number of bugs closed on that date, is this possible in jasper reports? I can create two separate charts using the html5 chart: - level = OpenDate (or CloseDate) - measure = count(bugId) What I am unable to do is combine the date fields, essentially I need UNION two queries to pull back open tickets and closed tickets as seperate rows but as this is a REST API I cannot achieve this in the datasource so are looking for alternative options within Jasper Reports itself