X-Rayed Parallel Coordinate Plot

With any real-world data, overstriking can frequently be a problem for parallel coordinate plots, as illustrated by the two plots here. Our X-rayed parallel coordinate plot is a novel way to cope with overstriking. For example:

This is a copy of the stretched parallel coordinate plot in Fig. B that has been "X-rayed."  Notice the x-ray like appearance of this plot: areas with more overstrikes show up in a brighter shade of white than areas with fewer overstrikes.

Using X-ray to see the pattern in the mess of a parallel
                      coordinate plot
X-rayed parallel coordinate plot

Acknowledgements: Data courtesy of Invitrogen.