search for: var2_tim

...the times series are very similar (one variable goes up when the other goes up, etc). For example, let's pretend my data look something like this (but with more noise)... var1_times<-c(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10) var1_values<-c(0, 0.5, 1.0, 1.5, 2.0, 2.5, 2.0, 1.5, 1.0, 0.5, 0) var2_times<-c(0, 2, 5.0, 7, 10.0) var2_values<-c(50, 55, 60, 55, 50) Note that var2 is always sampled at a time when a corresponding var1 measurement was taken, but some var1 measurements were taken alone. I'm trying to increase the frequency of the var2 time series in a model by taking into...