I have a time series of about 1500 measurements.  There are sporadic data 
gaps.  I would like to plot the time series with type "line".  I only want 
a line to connect the periods with data; I don't want a line to connect 
the points across a data gap.  Is there a function or recommended method 
to deal with this?

For example
there are 2000 days
days 1:1000 each have one measurement of temperature
days 1001: 1199 have no data
days 1200:2000 each have one measurement of temperature

I want the plot to connect points 1:1000 with a line, and to connect 
points 1200: 2000 with a different  line. I don't want a line to connect 
points 1001:1200. 

I searched the help archives and google but couldn't find anything. Any 
advice?



JK
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