PairwiseD (version 0.9.62)

pairwised2: pairing up observations of variables

Description

Function for creating measures form time ordered vectors of observations in panel data setting according to built in or user specified formula.D

Usage

pairwised2(data, measure = c("cor", "cov", "absmeandiff", "diffabs", "absvardiff",
             "abssddiff",  "absvarcoefdiff", "custom"),  period.length="FULL",
             exp.multiplier = 0, multiplier = 1, no.messages = FALSE,
             save.as = NULL,
             sep=";", dec=",", overlap=TRUE )

Arguments

data

a data.frame, list or path to the input file in csv, xlsx or xls format.

measure

operation that should be applied to every pair of time ordered vectors of observations. Built in options contains (z denotes first observation vector and g denotes the second observation):

• "cor": cor(z,g),
• "cov": cov(z,g),
• "absmeandiff": |mean(z)-mean(g)|,
• "absvardiff": |var(z)-var(g)|,
• "abssddiff": |sd(z)-sd(g)|,
• "absvarcoefdiff": |sd(z)/mean(z)-sd(g)/mean(g)|
• Moreover, option "custom" allows the user to specify any function of z and g.

period.length

Here, user can specify the length of the of the time ordered vectors for which the measures are calculated. Default value is the full length of the sample period (period.length="FULL").

exp.multiplier

default value set to 0. Changes the decimal mark in all the observations in the input file. Useful in cases when, for example, natural logarithm must be taken from a number that is very close to 0.

multiplier

default value set 1. Multiplies all the observations in the input file.

no.messages

default value is FALSE. If FALSE, the package will show messages: about finishing the calculations, destination file, potential error and wrong format of the input file.

save.as

in this argument, user can specify: path for the destination folder, name of the file and desired format. Argument is given in the following form: "path/name.format". For example: "C:/Myfiles/Rfiles/pairwised_data.csv". If the argument is not specified default is set as "current R directory/name_of_the_input_file_paiwise_result.format_of_input_file". User can specify csv, xls and xlsx as the output format. If user does not specify the file format, the format will be the same as of the input format or xlsx in the case of data.frame/list input. If argument is equal to "none", output file is not generated.

sep

symbol to be used for values separator in the input csv file (used if input file is set to be a csv file only). Default value is ";"

dec

symbol to be used for decimal separator in the input file. Default value is ","

overlap

default is set at TRUE. If TRUE then values of the measures are calculated for overlapping moving windows trough time(ex. 1991-2005, 1992-2006,1993-2007,...etc.).FALSE can be set only if period.length is lower than FULL.In this instance function will be calculating measures only for non-overlaping windows (1991-1995,1996-2000,2001-2006,...etc.), which length is indicated in the parameter period.length.

Value

function returns its result as data.frame object.

Examples

   pairwised2(data =  GDPgrowth, measure = c("cor","cov","abssddiff","var(z)+var(g)-cov(z,g)"),
             period.length = 9,  exp.multiplier = 0, multiplier = 1, no.messages = FALSE,
             save.as = "GDPgrowthRESULTS.csv")