

   PPlloottss wwiitthh GGeeoommeettrriiccaallllyy EEqquuaall SSccaalleess

        eqscplot(x, y, tol=0.04, ...)

   AArrgguummeennttss::

          x: vector of x values, or a 2-column matrix, or a
             list with components `x' and `y'

          y: vector of y values

        tol: proportion of "white space" at the margins of plot

        ...: further arguments for `plot'

   DDeessccrriippttiioonn::

        Version of a scatterplot with scales chosen to be equal
        on both axes, that is 1cm represents the same units on
        each

   DDeettaaiillss::

        Limits for the x and y axes are chosen so that they
        include the data. One of the sets of limits is then
        stretched from the midpoint to make the units equal.
        Finally both are stretched by `1 + tol' to move points
        away from the axes, and the points plotted.

   VVaalluuee::

        none

   SSiiddee EEffffeeccttss::

        performs the plot.

   SSeeee AAllssoo::

        `plot'

