edge { arrowstyle: filled; }
graph {
  colorscheme: x11;
  flow: south;
  title: G;
}

[ -100 ] --> [ 123.1230 ]
[ .1 ] --> [ -1. ]
[ .99 ] --> [ 0. ]
[ 0.99 ] --> [ 12.88 ]
[ 00019.1001 ] --> [ 1000. ]