... This paper describes the architecture and functionality of a general purpose two dimensional plotting package for astronomy--QtPlot. ... QtPlot supports ASCII and XML format. ... This modified package, QtPlot, supports column delimited ASCII format tables (the so-called IPAC table format), but of greater importance is the fact that it supports XML structured for astronomical plot directives, underpinned by the eXtensible Data Format(XDF), a container for transporting scientific data. ...