The DHS model system. runs a LM on each each set of n consecutive measurements and returns a summary of the information
runRegressionAnalysis(DF, Formula, Keep = NULL, n = 5, verbose = FALSE)
a row of a DF containing the site, last date, timespan, number of rows, model slope and significance, and predicted percent change, and what linear model was used
Contains TS data should only contain one site
LM model to be fit on a subsection of the data
The col in the original DF to keep besides Date
number of rows to be in each LM regression
prints what site we are in