Graphics Reference
In-Depth Information
Figure . . he main screen of TimeSearcher, showing price curves and dynamics curves (let) coupled
with attribute data (right) for online auctions
Curve selection: Aparticularcurve(orasetofcurves)isselectedbymouse-clicking
on any point in that curve. he selected curve is then highlighted in blue (see
Fig. . ). Hovering over a curve will highlight it in orange, thereby simplifying
the task of mouse coordination.
Zooming: he overview panel at the bottom of the screen displays the time series
for one of the variables and allows users to specify the part of the time series
they want to zoom in on. he orange field of the view box determines the time
range that is displayed on the upper let panels. Any one of the panels can be
used for the display in the orange field. To zoom, users drag the sides of the
box. By zooming in, the user can focus on a specific period in the data and see
more details. In many cases zooming also results in better separation between
the curves, enabling easier selection and deselection of lines. he box can also
be dragged right and let to pan the display and show a different time period.
Regardless of the range of the detail view, the overview always displays the entire
time series and provides context for the detail view.
Focusing on a variable: To focus on a certain variable (price, velocity, or accelera-
tion curves), users can choose to view only the panel on the let, which provides
a larger view of those curves. his results in clearer separation between curves,
which can be especially useful when there are many auctions. Users can specify
the number of variables to be shown (here one, two or three) and select which
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