In this classic example from W.S. Cleveland's Visualizing Data we see varieties of barley from different counties from 1931 and 1932. Here, the researcher has dragged & dropped 1932's data on top of 1931's data and notices something curious about Morris county. Do you see the problem?

In this example, the researcher dragged the "Air" data on top of the "Transfer" data to provide the best comparison for each state. The mouse (not shown) is positioned over the bar for Texas on the "Total" panel, so the value (8.83549) appears in the lower left of the browser.

The data in this example comes from the Current Population Survey (CPS). It is comparable to the first three graphs in the Economic Briefing Room provided by the White House. Notice that with the GPL version, the user can adjust the view to suit his or her needs. Also notice the red triangles marking the begining and end of a recession, and the change in the CPS design. The user can right-mouse on these points to obtain more information. Also, note the icons in the upper right. They provide links to WWW pages containing technical information and warnings about using data.

The data in this example comes from the Consumer Price Index (CPI) and the seven major component indices. Here, the researcher is comparing the overall CPI to Apparel and Upkeep. By pushing the "F" (for February) on the "Highlight Month" control, the researcher has marked every February with a red tic mark. This helps to reveal seasonality in the Apparel price index. Also, for finer control, the researcher clicked on the Axis for CPI and is able to adjust the scale and position of the axis using the Axis Control Window. Also, note the buttons in the lower left that allow the user to choose whether to look at the raw index, percent change, or seasonally adjusted values.