tis: mergeSeries – R documentation

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mergeSeries

Merge Time Indexed Series

Description

Merge two time-indexed series using either the levels or the first differences of the second series where the series overlap.

Usage

mergeSeries(x, y, differences = FALSE, naLoses = FALSE)

Arguments

`x, y`	`tis` objects, or objects that can sensibly be coerced to `tis` by `as.tis`.
`differences`	if `TRUE`, the first differences of series are merged, and then cumulatively summed. The default is `FALSE`.
`naLoses`	if `TRUE`, `NA` values in `y` do not overwrite corresponding values in `x`.

Details

x and y must have the same tif (ti frequency), and the same number of column (if they are multivariate).

Value

A tis object series with start and end dates that span those of x and y. Where the series overlap, values from y are used, except that if naLoses is TRUE, NA values from y do not overwrite non-NA values in x.