This function is the underlying code behind the
horizontal keyword for all x/y charts. Calling
flip! directly is useful for interactive use, where you have a chart and think it might look better with the inverse orientation.
Due to the properties of a scatterplot (i.e. points, x-axis/y-axis are numeric, no “orientation” per se), flip! has no affect; should you wish to change the ‘orientation’ of the series of a scatterplot, just switch the series’ in the call to
scatter(x,y) => scatter(y,x)).