PS file modification

• The following lines control the size and position of your graph:
  /xBBoxSide 450 def % length (in pts) of bounding box
/yBBoxSide 450 def % height (in pts) of bounding box< br> /xorigin 80 def % displacement (in pts) from left side of page
/yorigin 145 def

• This macro allow you to give comment on your images.
  /Annotation{ gsave LabelFont setfont
yBBoxSide mul exch xBBoxSide mul exch moveto CenterString show
grestore }def

• To add a special point, remember to scale to the range [0,1]x[0,1]