    # Example 7 -- Box plots of mixing efficiency vs density ratio (meddy)

    `Draw y boxplot from \file at .x.'
    /*
    Draw a y boxplot for data in given file, at given
    value of x.
    */
    {
        open \.word4.
        read columns * y
        close
        draw y box plot at \.word6.
    }
    if !..publication..
        draw time stamp
    end if
    set x axis 1 3 1 0.1
    set x name "Density Ratio, $R_\rho$"
    set x margin 4
    set y axis -2 1 1
    #
    # Must fool gri into not drawing the axes, because the y data
    # are already in logspace.
    draw axes none
    Draw y boxplot from example7a.dat at 1.3
    Draw y boxplot from example7b.dat at 1.4
    Draw y boxplot from example7c.dat at 1.5
    Draw y boxplot from example7d.dat at 1.6
    Draw y boxplot from example7e.dat at 1.7
    Draw y boxplot from example7f.dat at 1.8
    Draw y boxplot from example7g.dat at 1.9
    delete y scale
    set y name "Efficiency, $\Gamma$"
    set y type log
    set y axis 0.01 10 1
    draw axes
    draw title "Example 7 -- Box plot"