plotting zoo object

JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC
1968	NA	10.7	10.0	9.3	7.4	8.1	9.3	9.5	8.5	10.0	10.0	13.0
1969	13.0	9.9	7.0	5.9	NA	6.5	7.3	6.6	NA	NA	NA	NA
1970	10.7	8.9	8.1	NA	NA	7.1	7.7	NA	6.5	NA	8.3	NA
1971	NA	11.6	NA	NA	7.8	NA	NA	6.2	NA	NA	8.4	NA

x<-read.zoo("textconnection", sep=",", format= "%Y", header=TRUE)
plot(x)

#this plots all of the years by each month.  I would like to plot one
long time series from 1968 to 1971
#is there an easy way to do this?  I can reformat the data in excel so
that the index will be year then month, but this will take a while.
the end goal is #to be able to apply some signal processing things
like spectral density after fitting the seasonal trend etc.
thanks

Stephen

Let's not spend our time and resources thinking about things that are
so little or so large that all they really do for us is puff us up and
make us feel like gods. We are mammals, and have not exhausted the
annoying little problems of being mammals.

	-K. Mullis