# Advanced and Fast Data Transformation

## Documentation for package ‘collapse’ version 1.2.1

- DESCRIPTION file.
- User guides, package vignettes and other documentation.
- Package NEWS.

## Help Pages

A B C D F G H I L M N P Q R S T U V W misc

collapse-package | Advanced and Fast Data Transformation

## -- A --

A0-collapse-documentation | Collapse Documentation & Overview
A1-fast-statistical-functions | Fast (Grouped, Weighted) Statistical Functions for Matrix-Like Objects
A2-fast-grouping | Fast (Ordered) Grouping
A3-data-frame-manipulation | Fast Data Frame Manipulation
A4-quick-conversion | Quick Data Conversion
A5-advanced-aggregation | Advanced Data Aggregation
A6-data-transformations | Data Transformations
A7-time-series-panel-series | Time-Series and Panel-Series
A8-list-processing | List Processing
A9-summary-statistics | Summary Statistics
AA1-recode-replace | Recode and Replace Values in Matrix-Like Objects
AA2-small-helpers | Small (Helper) Functions
add_stub | Small (Helper) Functions
add_vars | Fast Select, Replace or Add Data Frame Columns
add_vars<- | Fast Select, Replace or Add Data Frame Columns
all_identical | Small (Helper) Functions
all_obj_equal | Small (Helper) Functions
aperm.psmat | Matrix / Array from Panel-Series
as.character_factor | Quick Data Conversion
as.data.frame.descr | Detailed Statistical Description of Data Frame
as.factor.GRP | Fast Grouping / _collapse_ Grouping Objects
as.numeric_factor | Quick Data Conversion
atomic_elem | Find and Extract / Subset List Elements
atomic_elem<- | Find and Extract / Subset List Elements
av | Fast Select, Replace or Add Data Frame Columns
av<- | Fast Select, Replace or Add Data Frame Columns

## -- B --

B | Fast Between (Averaging) and Within (Centering) Transformations
B.data.frame | Fast Between (Averaging) and Within (Centering) Transformations
B.default | Fast Between (Averaging) and Within (Centering) Transformations
B.grouped_df | Fast Between (Averaging) and Within (Centering) Transformations
B.matrix | Fast Between (Averaging) and Within (Centering) Transformations
B.pdata.frame | Fast Between (Averaging) and Within (Centering) Transformations
B.pseries | Fast Between (Averaging) and Within (Centering) Transformations
BY | Split-Apply-Combine Computing
BY.data.frame | Split-Apply-Combine Computing
BY.default | Split-Apply-Combine Computing
BY.grouped_df | Split-Apply-Combine Computing
BY.matrix | Split-Apply-Combine Computing

## -- C --

cat_vars | Fast Select, Replace or Add Data Frame Columns
cat_vars<- | Fast Select, Replace or Add Data Frame Columns
char_vars | Fast Select, Replace or Add Data Frame Columns
char_vars<- | Fast Select, Replace or Add Data Frame Columns
ckmatch | Small (Helper) Functions
collap | Advanced Data Aggregation
collapg | Advanced Data Aggregation
collapse | Advanced and Fast Data Transformation
collapse-depreciated | Depreciated _collapse_ Functions
collapse-documentation | Collapse Documentation & Overview
collapse-options | _collapse_ Global Options
collapv | Advanced Data Aggregation

## -- D --

D | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
D.data.frame | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
D.default | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
D.grouped_df | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
D.list | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
D.matrix | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
D.pdata.frame | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
D.pseries | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
dapply | Data Apply
Date_vars | Fast Select, Replace or Add Data Frame Columns
Date_vars<- | Fast Select, Replace or Add Data Frame Columns
descr | Detailed Statistical Description of Data Frame
Dlog | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
Dlog.data.frame | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
Dlog.default | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
Dlog.grouped_df | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
Dlog.list | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
Dlog.matrix | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
Dlog.pdata.frame | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
Dlog.pseries | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data

## -- F --

F | Fast Lags and Leads for Time-Series and Panel Data
F.data.frame | Fast Lags and Leads for Time-Series and Panel Data
F.default | Fast Lags and Leads for Time-Series and Panel Data
F.grouped_df | Fast Lags and Leads for Time-Series and Panel Data
F.matrix | Fast Lags and Leads for Time-Series and Panel Data
F.pdata.frame | Fast Lags and Leads for Time-Series and Panel Data
F.pseries | Fast Lags and Leads for Time-Series and Panel Data
fact_vars | Fast Select, Replace or Add Data Frame Columns
fact_vars<- | Fast Select, Replace or Add Data Frame Columns
fbetween | Fast Between (Averaging) and Within (Centering) Transformations
fbetween.data.frame | Fast Between (Averaging) and Within (Centering) Transformations
fbetween.default | Fast Between (Averaging) and Within (Centering) Transformations
fbetween.grouped_df | Fast Between (Averaging) and Within (Centering) Transformations
fbetween.matrix | Fast Between (Averaging) and Within (Centering) Transformations
fbetween.pdata.frame | Fast Between (Averaging) and Within (Centering) Transformations
fbetween.pseries | Fast Between (Averaging) and Within (Centering) Transformations
fcompute | Fast Transform and Compute Columns on a Data Frame
fdiff | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
fdiff.data.frame | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
fdiff.default | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
fdiff.grouped_df | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
fdiff.list | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
fdiff.matrix | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
fdiff.pdata.frame | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
fdiff.pseries | Fast (Quasi-, Log-) Differences for Time-Series and Panel Data
fdim | Small (Helper) Functions
ffirst | Fast (Grouped) First and Last Value for Matrix-Like Objects
ffirst.data.frame | Fast (Grouped) First and Last Value for Matrix-Like Objects
ffirst.default | Fast (Grouped) First and Last Value for Matrix-Like Objects
ffirst.grouped_df | Fast (Grouped) First and Last Value for Matrix-Like Objects
ffirst.matrix | Fast (Grouped) First and Last Value for Matrix-Like Objects
fFtest | Fast F-test of Linear Models (with Factors)
fgroup_by | Fast Grouping / _collapse_ Grouping Objects
fgroup_vars | Fast Grouping / _collapse_ Grouping Objects
fgrowth | Fast Growth Rates for Time-Series and Panel Data
fgrowth.data.frame | Fast Growth Rates for Time-Series and Panel Data
fgrowth.default | Fast Growth Rates for Time-Series and Panel Data
fgrowth.grouped_df | Fast Growth Rates for Time-Series and Panel Data
fgrowth.list | Fast Growth Rates for Time-Series and Panel Data
fgrowth.matrix | Fast Growth Rates for Time-Series and Panel Data
fgrowth.pdata.frame | Fast Growth Rates for Time-Series and Panel Data
fgrowth.pseries | Fast Growth Rates for Time-Series and Panel Data
fHDbetween | Higher-Dimensional Centering and Linear Prediction
fHDbetween.data.frame | Higher-Dimensional Centering and Linear Prediction
fHDbetween.default | Higher-Dimensional Centering and Linear Prediction
fHDbetween.matrix | Higher-Dimensional Centering and Linear Prediction
fHDbetween.pdata.frame | Higher-Dimensional Centering and Linear Prediction
fHDbetween.pseries | Higher-Dimensional Centering and Linear Prediction
fHDwithin | Higher-Dimensional Centering and Linear Prediction
fHDwithin.data.frame | Higher-Dimensional Centering and Linear Prediction
fHDwithin.default | Higher-Dimensional Centering and Linear Prediction
fHDwithin.matrix | Higher-Dimensional Centering and Linear Prediction
fHDwithin.pdata.frame | Higher-Dimensional Centering and Linear Prediction
fHDwithin.pseries | Higher-Dimensional Centering and Linear Prediction
finteraction | Fast Factor Generation and Vector Grouping
flag | Fast Lags and Leads for Time-Series and Panel Data
flag.data.frame | Fast Lags and Leads for Time-Series and Panel Data
flag.default | Fast Lags and Leads for Time-Series and Panel Data
flag.grouped_df | Fast Lags and Leads for Time-Series and Panel Data
flag.matrix | Fast Lags and Leads for Time-Series and Panel Data
flag.pdata.frame | Fast Lags and Leads for Time-Series and Panel Data
flag.pseries | Fast Lags and Leads for Time-Series and Panel Data
flast | Fast (Grouped) First and Last Value for Matrix-Like Objects
flast.data.frame | Fast (Grouped) First and Last Value for Matrix-Like Objects
flast.default | Fast (Grouped) First and Last Value for Matrix-Like Objects
flast.grouped_df | Fast (Grouped) First and Last Value for Matrix-Like Objects
flast.matrix | Fast (Grouped) First and Last Value for Matrix-Like Objects
fmax | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmax.data.frame | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmax.default | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmax.grouped_df | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmax.matrix | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmean | Fast (Grouped, Weighted) Mean for Matrix-Like Objects
fmean.data.frame | Fast (Grouped, Weighted) Mean for Matrix-Like Objects
fmean.default | Fast (Grouped, Weighted) Mean for Matrix-Like Objects
fmean.grouped_df | Fast (Grouped, Weighted) Mean for Matrix-Like Objects
fmean.matrix | Fast (Grouped, Weighted) Mean for Matrix-Like Objects
fmedian | Fast (Grouped) Median Value for Matrix-Like Objects
fmedian.data.frame | Fast (Grouped) Median Value for Matrix-Like Objects
fmedian.default | Fast (Grouped) Median Value for Matrix-Like Objects
fmedian.grouped_df | Fast (Grouped) Median Value for Matrix-Like Objects
fmedian.matrix | Fast (Grouped) Median Value for Matrix-Like Objects
fmin | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmin.data.frame | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmin.default | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmin.grouped_df | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmin.matrix | Fast (Grouped) Maxima and Minima for Matrix-Like Objects
fmode | Fast (Grouped, Weighted) Statistical Mode for Matrix-Like Objects
fmode.data.frame | Fast (Grouped, Weighted) Statistical Mode for Matrix-Like Objects
fmode.default | Fast (Grouped, Weighted) Statistical Mode for Matrix-Like Objects
fmode.grouped_df | Fast (Grouped, Weighted) Statistical Mode for Matrix-Like Objects
fmode.matrix | Fast (Grouped, Weighted) Statistical Mode for Matrix-Like Objects
fncol | Small (Helper) Functions
fNdistinct | Fast (Grouped) Distinct Value Count for Matrix-Like Objects
fNdistinct.data.frame | Fast (Grouped) Distinct Value Count for Matrix-Like Objects
fNdistinct.default | Fast (Grouped) Distinct Value Count for Matrix-Like Objects
fNdistinct.grouped_df | Fast (Grouped) Distinct Value Count for Matrix-Like Objects
fNdistinct.matrix | Fast (Grouped) Distinct Value Count for Matrix-Like Objects
fnlevels | Small (Helper) Functions
fNobs | Fast (Grouped) Observation Count for Matrix-Like Objects
fNobs.data.frame | Fast (Grouped) Observation Count for Matrix-Like Objects
fNobs.default | Fast (Grouped) Observation Count for Matrix-Like Objects
fNobs.grouped_df | Fast (Grouped) Observation Count for Matrix-Like Objects
fNobs.matrix | Fast (Grouped) Observation Count for Matrix-Like Objects
fnrow | Small (Helper) Functions
fprod | Fast (Grouped, Weighted) Product for Matrix-Like Objects
fprod.data.frame | Fast (Grouped, Weighted) Product for Matrix-Like Objects
fprod.default | Fast (Grouped, Weighted) Product for Matrix-Like Objects
fprod.grouped_df | Fast (Grouped, Weighted) Product for Matrix-Like Objects
fprod.matrix | Fast (Grouped, Weighted) Product for Matrix-Like Objects
fscale | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
fscale.data.frame | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
fscale.default | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
fscale.grouped_df | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
fscale.matrix | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
fscale.pdata.frame | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
fscale.pseries | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
fsd | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fsd.data.frame | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fsd.default | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fsd.grouped_df | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fsd.matrix | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fselect | Fast Select, Replace or Add Data Frame Columns
fselect<- | Fast Select, Replace or Add Data Frame Columns
fsubset | Fast Subsetting
fsubset.data.frame | Fast Subsetting
fsubset.default | Fast Subsetting
fsubset.matrix | Fast Subsetting
fsum | Fast (Grouped, Weighted) Sum for Matrix-Like Objects
fsum.data.frame | Fast (Grouped, Weighted) Sum for Matrix-Like Objects
fsum.default | Fast (Grouped, Weighted) Sum for Matrix-Like Objects
fsum.grouped_df | Fast (Grouped, Weighted) Sum for Matrix-Like Objects
fsum.matrix | Fast (Grouped, Weighted) Sum for Matrix-Like Objects
ftransform | Fast Transform and Compute Columns on a Data Frame
funique | Small (Helper) Functions
fvar | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fvar.data.frame | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fvar.default | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fvar.grouped_df | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fvar.matrix | Fast (Grouped, Weighted) Variance and Standard Deviation for Matrix-Like Objects
fwithin | Fast Between (Averaging) and Within (Centering) Transformations
fwithin.data.frame | Fast Between (Averaging) and Within (Centering) Transformations
fwithin.default | Fast Between (Averaging) and Within (Centering) Transformations
fwithin.grouped_df | Fast Between (Averaging) and Within (Centering) Transformations
fwithin.matrix | Fast Between (Averaging) and Within (Centering) Transformations
fwithin.pdata.frame | Fast Between (Averaging) and Within (Centering) Transformations
fwithin.pseries | Fast Between (Averaging) and Within (Centering) Transformations

## -- G --

G | Fast Growth Rates for Time-Series and Panel Data
G.data.frame | Fast Growth Rates for Time-Series and Panel Data
G.default | Fast Growth Rates for Time-Series and Panel Data
G.grouped_df | Fast Growth Rates for Time-Series and Panel Data
G.list | Fast Growth Rates for Time-Series and Panel Data
G.matrix | Fast Growth Rates for Time-Series and Panel Data
G.pdata.frame | Fast Growth Rates for Time-Series and Panel Data
G.pseries | Fast Growth Rates for Time-Series and Panel Data
get_elem | Find and Extract / Subset List Elements
get_vars | Fast Select, Replace or Add Data Frame Columns
get_vars<- | Fast Select, Replace or Add Data Frame Columns
GGDC10S | Groningen Growth and Development Centre 10-Sector Database
groupid | Generate Run-Length Type Group-Id
group_names.GRP | Fast Grouping / _collapse_ Grouping Objects
GRP | Fast Grouping / _collapse_ Grouping Objects
GRP.default | Fast Grouping / _collapse_ Grouping Objects
GRP.factor | Fast Grouping / _collapse_ Grouping Objects
GRP.grouped_df | Fast Grouping / _collapse_ Grouping Objects
GRP.pdata.frame | Fast Grouping / _collapse_ Grouping Objects
GRP.pseries | Fast Grouping / _collapse_ Grouping Objects
GRP.qG | Fast Grouping / _collapse_ Grouping Objects
gv | Fast Select, Replace or Add Data Frame Columns
gv<- | Fast Select, Replace or Add Data Frame Columns

## -- H --

has_elem | Find and Extract / Subset List Elements
HDB | Higher-Dimensional Centering and Linear Prediction
HDB.data.frame | Higher-Dimensional Centering and Linear Prediction
HDB.default | Higher-Dimensional Centering and Linear Prediction
HDB.matrix | Higher-Dimensional Centering and Linear Prediction
HDB.pdata.frame | Higher-Dimensional Centering and Linear Prediction
HDB.pseries | Higher-Dimensional Centering and Linear Prediction
HDW | Higher-Dimensional Centering and Linear Prediction
HDW.data.frame | Higher-Dimensional Centering and Linear Prediction
HDW.default | Higher-Dimensional Centering and Linear Prediction
HDW.matrix | Higher-Dimensional Centering and Linear Prediction
HDW.pdata.frame | Higher-Dimensional Centering and Linear Prediction
HDW.pseries | Higher-Dimensional Centering and Linear Prediction

## -- I --

irreg_elem | Find and Extract / Subset List Elements
is.categorical | Small (Helper) Functions
is.Date | Small (Helper) Functions
is.GRP | Fast Grouping / _collapse_ Grouping Objects
is.qG | Fast Factor Generation and Vector Grouping
is.regular | Regular Objects and Unlistable Lists
is.unlistable | Regular Objects and Unlistable Lists

## -- L --

L | Fast Lags and Leads for Time-Series and Panel Data
L.data.frame | Fast Lags and Leads for Time-Series and Panel Data
L.default | Fast Lags and Leads for Time-Series and Panel Data
L.grouped_df | Fast Lags and Leads for Time-Series and Panel Data
L.matrix | Fast Lags and Leads for Time-Series and Panel Data
L.pdata.frame | Fast Lags and Leads for Time-Series and Panel Data
L.pseries | Fast Lags and Leads for Time-Series and Panel Data
ldepth | Determine the Depth / Level of Nesting of a List
list_elem | Find and Extract / Subset List Elements
list_elem<- | Find and Extract / Subset List Elements
logi_vars | Fast Select, Replace or Add Data Frame Columns
logi_vars<- | Fast Select, Replace or Add Data Frame Columns

## -- M --

mctl | Quick Data Conversion
mrtl | Quick Data Conversion

## -- N --

namlab | Small (Helper) Functions
na_insert | Small (Helper) Functions
na_omit | Small (Helper) Functions
na_rm | Small (Helper) Functions
num_vars | Fast Select, Replace or Add Data Frame Columns
num_vars<- | Fast Select, Replace or Add Data Frame Columns
nv | Fast Select, Replace or Add Data Frame Columns
nv<- | Fast Select, Replace or Add Data Frame Columns

## -- P --

plot.GRP | Fast Grouping / _collapse_ Grouping Objects
plot.psmat | Matrix / Array from Panel-Series
print.descr | Detailed Statistical Description of Data Frame
print.GRP | Fast Grouping / _collapse_ Grouping Objects
print.pwcor | Pairwise Correlations, Covariances and Observation Count
print.pwcov | Pairwise Correlations, Covariances and Observation Count
print.qsu | Fast (Grouped, Weighted) Summary Statistics for Cross-Sectional and Panel-Data
psacf | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
psacf.data.frame | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
psacf.default | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
psacf.pdata.frame | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
psacf.pseries | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
psccf | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
psccf.default | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
psccf.pseries | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
psmat | Matrix / Array from Panel-Series
psmat.data.frame | Matrix / Array from Panel-Series
psmat.default | Matrix / Array from Panel-Series
psmat.pdata.frame | Matrix / Array from Panel-Series
psmat.pseries | Matrix / Array from Panel-Series
pspacf | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
pspacf.data.frame | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
pspacf.default | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
pspacf.pdata.frame | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
pspacf.pseries | Auto- and Cross- Covariance and -Correlation Function Estimation for Panel-Series
pwcor | Pairwise Correlations, Covariances and Observation Count
pwcov | Pairwise Correlations, Covariances and Observation Count
pwNobs | Pairwise Correlations, Covariances and Observation Count

## -- Q --

qDF | Quick Data Conversion
qDT | Quick Data Conversion
qF | Fast Factor Generation and Vector Grouping
qG | Fast Factor Generation and Vector Grouping
qM | Quick Data Conversion
qsu | Fast (Grouped, Weighted) Summary Statistics for Cross-Sectional and Panel-Data
qsu.data.frame | Fast (Grouped, Weighted) Summary Statistics for Cross-Sectional and Panel-Data
qsu.default | Fast (Grouped, Weighted) Summary Statistics for Cross-Sectional and Panel-Data
qsu.matrix | Fast (Grouped, Weighted) Summary Statistics for Cross-Sectional and Panel-Data
qsu.pdata.frame | Fast (Grouped, Weighted) Summary Statistics for Cross-Sectional and Panel-Data
qsu.pseries | Fast (Grouped, Weighted) Summary Statistics for Cross-Sectional and Panel-Data

## -- R --

radixorder | Fast Radix-Based Ordering
radixorderv | Fast Radix-Based Ordering
rapply2d | Recursively Apply a Function to a List of Data Objects
Recode | Depreciated _collapse_ Functions
recode_char | Recode and Replace Values in Matrix-Like Objects
recode_num | Recode and Replace Values in Matrix-Like Objects
reg_elem | Find and Extract / Subset List Elements
replace_Inf | Recode and Replace Values in Matrix-Like Objects
replace_NA | Recode and Replace Values in Matrix-Like Objects
replace_non_finite | Depreciated _collapse_ Functions
replace_outliers | Recode and Replace Values in Matrix-Like Objects
rm_stub | Small (Helper) Functions

## -- S --

sbt | Fast Subsetting
select-replace-vars | Fast Select, Replace or Add Data Frame Columns
seqid | Generate Group-Id from Integer Sequences
seq_col | Small (Helper) Functions
seq_row | Small (Helper) Functions
setColnames | Small (Helper) Functions
setDimnames | Small (Helper) Functions
setRownames | Small (Helper) Functions
settfm | Fast Transform and Compute Columns on a Data Frame
settransform | Fast Transform and Compute Columns on a Data Frame
slt | Fast Select, Replace or Add Data Frame Columns
slt<- | Fast Select, Replace or Add Data Frame Columns
ss | Fast Subsetting
STD | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
STD.data.frame | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
STD.default | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
STD.grouped_df | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
STD.matrix | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
STD.pdata.frame | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects
STD.pseries | Fast (Grouped, Weighted) Scaling and Centering of Matrix-like Objects

## -- T --

tfm | Fast Transform and Compute Columns on a Data Frame
TRA | Transform Data by (Grouped) Replacing or Sweeping out Statistics
TRA.data.frame | Transform Data by (Grouped) Replacing or Sweeping out Statistics
TRA.default | Transform Data by (Grouped) Replacing or Sweeping out Statistics
TRA.grouped_df | Transform Data by (Grouped) Replacing or Sweeping out Statistics
TRA.matrix | Transform Data by (Grouped) Replacing or Sweeping out Statistics

## -- U --

unattrib | Small (Helper) Functions
unlist2d | Recursive Row-Binding / Unlisting in 2D - to Data Frame

## -- V --

varying | Fast Check of Variation in Data
varying.data.frame | Fast Check of Variation in Data
varying.default | Fast Check of Variation in Data
varying.grouped_df | Fast Check of Variation in Data
varying.matrix | Fast Check of Variation in Data
varying.pdata.frame | Fast Check of Variation in Data
varying.pseries | Fast Check of Variation in Data
vclasses | Small (Helper) Functions
vlabels | Small (Helper) Functions
vlabels<- | Small (Helper) Functions
vtypes | Small (Helper) Functions

## -- W --

W | Fast Between (Averaging) and Within (Centering) Transformations
W.data.frame | Fast Between (Averaging) and Within (Centering) Transformations
W.default | Fast Between (Averaging) and Within (Centering) Transformations
W.grouped_df | Fast Between (Averaging) and Within (Centering) Transformations
W.matrix | Fast Between (Averaging) and Within (Centering) Transformations
W.pdata.frame | Fast Between (Averaging) and Within (Centering) Transformations
W.pseries | Fast Between (Averaging) and Within (Centering) Transformations
wlddev | World Development Dataset

## -- misc --

%!in% | Small (Helper) Functions
.COLLAPSE_ALL | Collapse Documentation & Overview
.COLLAPSE_DATA | Collapse Documentation & Overview
.COLLAPSE_GENERIC | Collapse Documentation & Overview
.COLLAPSE_TOPICS | Collapse Documentation & Overview
.FAST_FUN | Fast (Grouped, Weighted) Statistical Functions for Matrix-Like Objects
.FAST_STAT_FUN | Fast (Grouped, Weighted) Statistical Functions for Matrix-Like Objects
.OPERATOR_FUN | Data Transformations
[.psmat | Matrix / Array from Panel-Series