search for: var2_valu

...e 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 account the parallel information in th...