The Collaborative International Dictionary of English v.0.48:

Plot \Plot\, v. t. [imp. & p. p. Plotted; p. pr. & vb. n.
   Plotting.]
   To make a plot, map, pr plan, of; to mark the position of on
   a plan; to delineate.
   [1913 Webster]

         This treatise plotteth down Cornwall as it now
         standeth.                                --Carew.
   [1913 Webster]