using PlotlyJS

function contour1()
    x = [-9, -6, -5 , -3, -1]
    y = [0, 1, 4, 5, 7]
    z = [10     10.625  12.5  15.625  20
         5.625  6.25    8.125 11.25   15.625
         2.5    3.125   5.    8.125   12.5
         0.625  1.25    3.125 6.25    10.625
         0      0.625   2.5   5.625   10]
    trace = contour(x=x, y=y, z=z)

    layout = Layout(title="Setting the X and Y Coordinates in a Contour Plot")
    plot(trace, layout)
end
