Hello, In a previous message I was reporting on rather strange simulation results. The problem was simply a consequence of my assuming that the ordering of the simulated positions was the same as in the input ( data() ) file. I had re-associated the positions from the input file to the output values because the output x and y's lacked precision. The problem disapeared with a shift in the coordinates. Thanks for the replies I got. Cheers. Pierre Gagnon Centre Saint-Laurent 105 McGill, Montréal (Québec) H2Y 2E7 514 496 1456 http://www.qc.ec.gc.ca/csl/ <http://www.qc.ec.gc.ca/csl/>
