Parallel Coordinate Graph

http://www.evl.uic.edu/aej/424/kyoung/Training-parallelcoordinate.html

The above image of a parallel coordinate graph creates a readily perceived structure at the common points. In the 1970's the parallel coordinates technique was developed and applied to a diverse set of multidimensional problems.  To create the graph, simply plot all observations on the same graph and often they will overlap creating the structure.