[R] Question about plotting discontinuous data

[Larsen Chung]

Hi, I have a simple question that I just cannot figure out. I
have 2 corresponding columns of data, one column (X-axis) for
time (formatted thus: 8:30:01am = 830.1, 12:30:05pm = 1230.5,
and one column (Y-axis) for values.

When I attempt to plot the data using something like
plot(inputdata[,1],inputdata[,2],type="l");
I get breaks in the plot (since the time essentially jumps
from 8:59:59am = 859.59 to 9:00:00am = 900.0).

Essentially, I get the plot shape I want if I just plot the
'values' column using plot(inputdata[,2],type="l");
however, then I don't get the corresponding 'time' labels. Is
there a way I can plot these two columns together without the
'breaks'?