I have a set of time series sampled at one second intervals. For example,
ts1 = TimeSeries[Table[k,{k,0,10}],{0,10}],
ts2 = TimeSeries[Table[k^2/10,{k,0,10}],{15,25}]
The series do not overlap and are separated by gaps of many seconds.
How to join them to form a single time series such that any attempt to sample that series in a gap between the initial series results in a Missing
value?