[R] plot prices and dates in a nice way

[Trafim Vanishek]

Dear all,
I currently experience the problem with nicely plotting price data against
the dates.

Data <- read.csv("C:/IBM.csv", header = TRUE, sep = ",")
plot(Data[,1], Data[,2])

I cannot find the way how can I choose the # of breaks for the x axis -
dates in this case?

Thanks a lot