When using a parallel coordinate graph or plot, every individual variable on the graph must be graphed on the vertical axis within the graph. Each element of data used in the graph must be plotted as a connected set of points on each axis. A popular means of applying parallel coordinate graphs is by using them to explore relationships among different variables. These graphs are used to visualize multivariate data and when graphing the individual points it uses lines to connect the different points. This particular parallel coordinate graph shows the differences between the size of automobile engines, weight, horsepower, acceleration, year model and miles per gallon. It graphs the difference between different size engines on all of the perviously mentioned variables, and theses variables are the main interest of the graph. The different sized engines shown on the graph are represented by different colors.
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