Time Series Functions

Time Series Functions
Name	Description
times	Returns a list of the times in the time series
values	Returns a list of the values in the time series
entry	Returns the time and value pair at the given index or date for a time series. Examples: entry(a, 1) entry(a, "Nov 3, 2006")
lag	Returns the previous value of a time series. Examples: lag(x) : previous value lag(x, 3) : third previous value
tsmin	Minimum value in a time series
tsmax	Maximum value in a time series
cumsum	Cumulative sum of all the values in the time series