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DataCombine (version 0.2.7.1)

R tools for making it easier to combine and clean data sets.

Description

R tools for combining and cleaning data sets, including filling in missing observations with data from another data frame and creating lag/lead variables.

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Install

install.packages('DataCombine')

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Version

0.2.7.1

License

GPL (>= 3)

Maintainer

Christopher Gandrud

Last Published

December 8th, 2014

Functions in DataCombine (0.2.7.1)

FillDown

Fills in missing (NA) values with the previous non-missing value

DropNA

Drop rows from a data frame with missing values on a given variable(s).

MoveFront

Move variables to the front of a data frame.

StartEnd

Find the starting and ending time points of a spell

grepl.sub

Subset a data frame if a specified pattern is found in a character string

rmExcept

Remove all objects from a workspace except those specified by the user.

shiftMA

Internal function for slideMA

shift

A function for creating lag and lead variables.

CountSpell

Count spells, including for grouped data

NaVar

Create new variable(s) indicating if there are missing values in other variable(s)

TimeFill

Creates a continuous Unit-Time-Dummy data frame from a data frame with Unit-Start-End times

slide

A function for creating lag and lead variables, including for time-series cross-sectional data.

InsertRow

Inserts a new row into a data frame

FindReplace

Replace multiple patterns found in a character string column of a data frame

slideMA

Create a moving average for a period before or after each time point for a given variable

SpreadDummy

Spread a dummy variable (1's and 0') over a specified time period and for specified groups

PercChange

Calculate the percentage change from a specified lag, including withing group

FillIn

A function for filling in missing values of a variable from one data frame with the values from another variable.

VarDrop

Drop one or more variables from a data frame.

dMerge

Merges 2 data frames and report/drop/keeps only duplicates.