ftsa (version 4.7)

extract: Extract variables or observations

Description

Creates subsets of a fts object.

Usage

extract(data, direction = c("time", "x"), timeorder, xorder)

Value

When xorder is specified, it returns a fts object with same argument as data but with a subset of x variables. When timeorder is specified, it returns a fts object with same argument as data but with a subset of time variables.

Examples

# ElNino is an object of class sliced functional time series.
# This function truncates the data series rowwise or columnwise.	
extract(data = ElNino, direction = "time", timeorder = 1980:2006) # Last 27 curves
extract(data = ElNino, direction = "x", xorder = 1:8) # First 8 x variables