Various R Programming Tools for Data Manipulation


[Up] [Top]

Documentation for package ‘gdata’ version 2.19.0

Help Pages

A B C D E F G H I K L M N O P R S T U W X misc

gdata-package Various R Programming Tools for Data Manipulation

-- A --

aggregate.table Defunct Functions in Package 'gdata'
ans Value of Last Evaluated Expression
Args Describe Function Arguments
as.levelsMap Mapping levels
as.listLevelsMap Mapping levels
as.object_sizes Report the Space Allocated for Objects

-- B --

bindData Bind two data frames into a multivariate data frame

-- C --

c.levelsMap Mapping levels
c.listLevelsMap Mapping levels
c.object_sizes Report the Space Allocated for Objects
case Map elements of a vector according to the provided 'cases'
cbindX Column-bind objects with different number of rows
centerText Center Text Strings
combine Combine R Objects With a Column Labeling the Source
ConvertMedUnits Convert medical measurements between International Standard (SI) and US 'Conventional' Units.

-- D --

drop.levels Drop unused factor levels
duplicated2 Determine Duplicate Elements

-- E --

env Describe All Loaded Environments

-- F --

first Return first or last element of an object
first<- Return first or last element of an object
format.object_sizes Report the Space Allocated for Objects
frameApply Subset analysis on data frames

-- G --

gdata Various R Programming Tools for Data Manipulation
getDateTimeParts Get date/time parts from date and time objects
getDay Get date/time parts from date and time objects
getDay.Date Get date/time parts from date and time objects
getDay.default Get date/time parts from date and time objects
getDay.POSIXct Get date/time parts from date and time objects
getDay.POSIXlt Get date/time parts from date and time objects
getHour Get date/time parts from date and time objects
getHour.default Get date/time parts from date and time objects
getMin Get date/time parts from date and time objects
getMin.default Get date/time parts from date and time objects
getMonth Get date/time parts from date and time objects
getMonth.Date Get date/time parts from date and time objects
getMonth.default Get date/time parts from date and time objects
getMonth.POSIXct Get date/time parts from date and time objects
getMonth.POSIXlt Get date/time parts from date and time objects
getSec Get date/time parts from date and time objects
getSec.default Get date/time parts from date and time objects
getYear Get date/time parts from date and time objects
getYear.Date Get date/time parts from date and time objects
getYear.default Get date/time parts from date and time objects
getYear.POSIXct Get date/time parts from date and time objects
getYear.POSIXlt Get date/time parts from date and time objects

-- H --

humanReadable Print Byte Size in Human Readable Format

-- I --

installXLSXsupport Install perl modules needed for read.xls to support Excel 2007+ XLSX format
interleave Interleave Rows of Data Frames or Matrices
is.levelsMap Mapping levels
is.listLevelsMap Mapping levels
is.object_sizes Report the Space Allocated for Objects
is.what Run Multiple is.* Tests on a Given Object
isUnknown Change unknown values to NA and vice versa
isUnknown.data.frame Change unknown values to NA and vice versa
isUnknown.default Change unknown values to NA and vice versa
isUnknown.list Change unknown values to NA and vice versa
isUnknown.matrix Change unknown values to NA and vice versa
isUnknown.POSIXlt Change unknown values to NA and vice versa

-- K --

keep Remove All Objects, Except Those Specified

-- L --

last Return first or last element of an object
last<- Return first or last element of an object
left Return the leftmost or rightmost columns of a matrix or dataframe
left.data.frame Return the leftmost or rightmost columns of a matrix or dataframe
left.matrix Return the leftmost or rightmost columns of a matrix or dataframe
ll Describe Objects or Elements
lowerTriangle Extract or replace the upper/lower triangular portion of a matrix
lowerTriangle<- Extract or replace the upper/lower triangular portion of a matrix
ls.funs List function objects

-- M --

mapLevels Mapping levels
mapLevels.character Mapping levels
mapLevels.data.frame Mapping levels
mapLevels.default Mapping levels
mapLevels.factor Mapping levels
mapLevels.list Mapping levels
mapLevels<- Mapping levels
mapLevels<-.character Mapping levels
mapLevels<-.data.frame Mapping levels
mapLevels<-.default Mapping levels
mapLevels<-.factor Mapping levels
mapLevels<-.list Mapping levels
matchcols Select columns names matching certain critera
MedUnits Table of conversions between Intertional Standard (SI) and US 'Conventional' Units for common medical measurements.
mv Rename an Object

-- N --

NAToUnknown Change unknown values to NA and vice versa
NAToUnknown.data.frame Change unknown values to NA and vice versa
NAToUnknown.default Change unknown values to NA and vice versa
NAToUnknown.factor Change unknown values to NA and vice versa
NAToUnknown.list Change unknown values to NA and vice versa
nobs Compute the Number of Non-missing Observations
nobs.data.frame Compute the Number of Non-missing Observations
nobs.default Compute the Number of Non-missing Observations
nobs.lm Compute the Number of Non-missing Observations
nPairs Number of variable pairs

-- O --

object.size Report the Space Allocated for Objects

-- P --

print.levelsMap Mapping levels
print.listLevelsMap Mapping levels
print.object_sizes Report the Space Allocated for Objects

-- R --

read.xls Read Excel files
remove.vars Remove or rename variables in a dataframe
rename.vars Remove or rename variables in a dataframe
reorder.factor Reorder the Levels of a Factor
resample Consistent Random Samples and Permutations
right Return the leftmost or rightmost columns of a matrix or dataframe
right.data.frame Return the leftmost or rightmost columns of a matrix or dataframe
right.matrix Return the leftmost or rightmost columns of a matrix or dataframe

-- S --

sheetCount Count or list sheet names in Excel spreadsheet files.
sheetNames Count or list sheet names in Excel spreadsheet files.
sort.levelsMap Mapping levels
startsWith Determine if a character string "starts with" with the specified characters.

-- T --

trim Remove leading and trailing spaces from character strings
trimSum Trim a vector such that the last/first value represents the sum of trimmed values

-- U --

unique.levelsMap Mapping levels
unknownToNA Change unknown values to NA and vice versa
unknownToNA.data.frame Change unknown values to NA and vice versa
unknownToNA.default Change unknown values to NA and vice versa
unknownToNA.factor Change unknown values to NA and vice versa
unknownToNA.list Change unknown values to NA and vice versa
unmatrix Convert a matrix into a vector, with appropriate names
update.data.frame Update the elements of a list, or rows of a dataframe
update.list Update the elements of a list, or rows of a dataframe
upperTriangle Extract or replace the upper/lower triangular portion of a matrix
upperTriangle<- Extract or replace the upper/lower triangular portion of a matrix

-- W --

wideByFactor Create multivariate data by a given factor
write.fwf Write object in fixed width format

-- X --

xls2csv Read Excel files
xls2sep Read Excel files
xls2tab Read Excel files
xls2tsv Read Excel files
xlsFormats Check which file formats are supported by read.xls

-- misc --

"[.levelsMap" Mapping levels
"[.listLevelsMap" Mapping levels
.checkLevelsMap Mapping levels
.checkListLevelsMap Mapping levels