Calling Tree { functions in order of ./hexbin.R }
-------------

hexbin
 \--> .Fortran("hbin", *)

hboxplot
 |--> hcell2xy()
 |--> hexpolygon()
 \-----\-> hexcoords()

hcell
 \--> .Fortran("hcell", *)

hcell2xy

hdiffplot
 \--> hcell2xy(), plot(), hexpolygon(), hexcoords()

erode.hexbin
 \--> .Fortran("herode", *)

hexagons
 \--> hcell2xy(), plot(), hexpolygon(), hexcoords(), polygon()

hex.legend
 \--> hexcoords(), hexpolygon()

hmatplot
 |--> hcell2xy()
 |--> hboxplot
 \--> hdiffplot  {2 x}

plot.hexbin --> [ LinGraY() ]
 |--> hex.legend()
 |--> hexagons()


smooth.hexbin
 \--> .Fortran("hsm" , * )

hray
 \--> { polygon, lines }