tsScan: Read and Write Time Series to Files

In tfplot: Time Frame User Utilities

Description

Read and write time series to files.

Usage

   tsScan(file="", skip=1, nseries=1, sep=",", 
       na.strings=c("NA", "NC", "ND"), ...)

   tsWrite(x, file="data", header=TRUE, sep=",", digits=16)

Arguments

file	name of file to read or write.
x	A time series or time series matrix.
skip	number of lines to skip at start of file before reading data.
nseries	number of columns of series to expect.
sep	field separator.
na.strings	charaters that should be treated as NA.
header	a logical indicating is a header line should be written.
digits	number of significant digits to print.
...	additional arguments passed to scan.

Details

Read and write a file with time series data. By default the file is comma separated values (csv) with one header line (the series names on write, ignored on read). The year and period are the first two columns, with series in following columns. These are wrappers for scan and write.

Beware that short digits settings will result in truncated data.

Value

A time series vector or matrix.

See Also

scan, write

Examples

tmpfile <- tempfile()
on.exit(unlink(tmpfile) )
z <- ts(matrix(100 + rnorm(200),100,2), start=c(1991,1), frequency=4)
tsWrite(z, file=tmpfile)
zz <- tsScan(tmpfile, nseries=2)

max(abs(z - zz)) 

tfplot documentation built on June 3, 2021, 1:07 a.m.