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| Author(s) |
Hao, M., Dayal, U., Sharma, R. K., Keim, D., Janetzko, H. |
| Title |
Variable binned scatter plots |
| Abstract |
The scatter plot is a well-known method of visualizing pairs of two continuous variables. Scatter plots are
intuitive and easy-to-use, but often have a high degree of overlap which may occlude a significant portion of the
data. To analyze a dense non-uniform dataset, a recursive drill-down is required for detailed analysis. In this
paper, we propose variable binned scatter plots to allow the visualization of large amounts of data without
overlapping. The basic idea is to use a non-uniform (variable) binning of the x and y dimensions and to plot all
data points that are located within each bin into the corresponding squares. In the visualization, each data point
is then represented by a small cell (pixel). Users are able to interact with individual data points for record level
information. To analyze an interesting area of the scatter plot, the variable binned scatter plots with a refined
scale for the subarea can be generated recursively as needed. Furthermore, we map a third attribute to color to
obtain a visual clustering. We have applied variable binned scatter plots to solve real-world problems in the
areas of credit card fraud and data center energy consumption to visualize their data distributions and cause-
effect relationships among multiple attributes. A comparison of our methods with two recent scatter plot
variants is included. |
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