[R] Overplotting two series of observations in R

[Marcus Mattos Riether]

Hi all.

Could anyone help me find how to overplot two series of observations in the
same window?

Thanks.

Marcus M. Riether
---------------------------------------------
marcus.riether at sesi.org.br
SESI Departamento Nacional
Tecnologia da Educação
tel.: (61) 317 9914

"Not everything that can be counted counts
 and not everything that counts can be counted."

                                            Einstein