Stockvis-stock charting application programming interface for handheld devices

Abstract

Many a mobile application provides stock information. However all of these applications have deficiencies. First, none of them allows users to view charts to facilitate the visual comparison of all relevant data, although such a comparison is one of the most important uses for stock analysis. Second, most applications allow very limited control over the data sets they display. For example, an investor cannot examine momentum over two different periods. All of these shortcomings limit the utility of current stock services. StockVis is a new Mobile-based stock charting system, developed as part of this project, which solves all these problems -- and more. A reusable API to help in further development of such applications. With a simple Graphical User Interface, a viewer can view desired charts for a particular stock. He can adjust charts to any size. With input dialog screens, the user establishes the desired parameters. The StockVis system provides all of these functions in the limited environment of a mobile. The StockVis system has overcome a number of technical challenges, including the difficulties of operating on the mobile. One of the essential tasks was displaying 2D charts on the small screen, which StockVis solved using J2ME. This project reviews these challenges and discusses the advanced technologies and object-oriented design that made StockVis possible. It also considers the lessons learned from the development of and contemplates some future directions for the StockVis system. Users prefer charts that allow them to have greater control of the display of data. The success of any business man depends on the latest information he receives. That is why an application like StockVis has among the best offerings on the wireless media. Another direction is usability enhancements through use of the API’s for application developers using mobile technology.