adds a box, with shadow on a plot; used for writing text
1 2 3 4 5 
box.type 
shape of the box. 
mid 
midpoint (x,y) of the box. 
radx 
horizontal radius of the box. 
rady 
vertical radius of the box. 
shadow.size 
relative size of shadow. 
shadow.col 
color of shadow. 
box.col 
fill color of the box. 
lcol 
line color surrounding box. 
lwd 
line width of line surrounding the box. 
dr 
if box is curved: size of segments, in radians, to draw ellipse (decrease for smoother). 
angle 
rotation angle, degrees. 
len 
if 
nr 
if 
rx 
if 
theta 
if 
... 
other arguments. 
one box is drawn, centered aroung point mid
and with horizontal and
vertical radiusses radx
, rady
.
By default, a shadow is drawn, in the rightlower corner of the box.
The shadow color and relative size is specified with shadow.col
and
shadow.size
respectively.
shadow.size = 0
toggles off the drawing of the shadow.
the type of the box is set with box.type
which can take on the values:
"rect": a rectangle.
"ellipse": an ellipse.
"diamond": a diamond.
"round": a rectangle with rounded sides.
"hexa": a hexagonal shape.
"multi": a multigonal shape; also input "nr", the number of angles.
"cylinder": a cylindrical shape; also input "len", the length of the cylinder.
"parallel": a parallelogram; “theta” is the angle of the bottom left corner.
the fillcolor of the box is specified with box.col
;
the line width and color of the box are specified with lwd
and
lcol
Karline Soetaert <karline.soetaert@nioz.nl>
1 2 3 4 5 6 7 8 9 10 11 12 13 14  openplotmat(main="shadowbox")
shadowbox(box.type = "rect", mid = c(0.1, 0.5),
rady = 0.1, radx = 0.05, angle = 25)
shadowbox(box.type = "round", mid = c(0.3, 0.5),
rady = 0.05, radx = 0.025, angle = 90,
shadow.col = "darkred")
shadowbox(box.type = "ellipse", mid = c(0.5, 0.5),
rady = 0.05, radx = 0.075, box.col = "blue")
shadowbox(box.type = "multi", mid = c(0.8, 0.5),
rady = 0.05, radx = 0.05, box.col = "darkblue", nr = 5)

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