This visualization research focuses on financial data, specifically the daily trading data for all of the companies in the S&P500 for the year 2008. The specific daily data points are company name, open and close price and trading volume. The daily open and close data is used to calculate day change, year-to-date change, and new year-to-date highs and lows. Trading volume shows how the companies shares are moving the stock market. Additionally, a subset of companies is used to demonstrate the ability to highlight user specific interests.
In the “4D” system, time is animated and each day is show in succession so that the visualization simulates the rhythmic change that the market produces with its expansion and contraction. Typography plays an important role in this display. As companies reach user-defined thresholds, type appears, locating the company and providing both ticker symbol and data point. The Y-axis is year-to-date percent change, the X-axis is daily change, and the Z-axis is volume. The size of each cube represents volume and its color represents a combination of both year-to- date change and day change. Color hues for day positive + year-to-date positive shift from green to blue, while day positive + year-to-date negative shifts from red to yellow. Companies that reach new year-to- date highs and lows glow in the appropriate color (green or red respectively.)