3D Bivariate Histogram - Contour Plot

This contour plot presents a projection of the spline-smoothed surface fit to the frequency data (see 3D Sequential Surface Plot). Successive values of each series are plotted along the x-axis, with each successive series represented along the y-axis. . (See also, Calculating Contour Levels and Distance.)

See also, Graphs - Bivariate Histograms.