Updated to pass CRAN tests due to changes in the RNG sample kinds.
22 July 2018
Interim release to help the data.table team with reverse dependency checks.
05 April 2018
Preparing for transition to V2 of the splitstackshape package.
.Deprecated(). These include
concat.split.multiple and concat.split.compact, both of which can now just
directly use cSplit.cSplit_f has been removed as it would no longer be relevant in V2 of the
package and isn't entirely reliable the way it has been written. fread, on
which the function was based, has underwent many changes since the function
was written.Tests have been added covering most basic cases, but not for all potential bugs that have been fixed in V2 of the package.
stratified has been fixed.cSplit_f has been removed.29 March 2018
Reshape() bugfix. Reported at https://stackoverflow.com/q/49281838/1270695.listCol_w() bugfix. Thanks to @jazzurro.cSplit_e() bugfix. Reported at https://stackoverflow.com/q/48576331/127069520 March 2018
23 October 2014
listCol_l and listCol_w added as utilities for unlisting or flattening
columns stored as lists in data.frames and data.tables.18 October 2014
Bug in :::.stripWhite when using "|" as a delimiter fixed.
13 October 2014
See 1.3.0 -- 1.3.8 for details of changes.
cSplit now replaces concat.split.compact and concat.split.multiple in
concat.split; cSplit_f has been introduced as a related function. Other new
functions are stratified and expandRows.
12 October 2014
cSplit_f
The "_f" is both representative of fread, which this function uses to split
the concatenated cells, and "fixed", which is indicative of the fact that this
function would only work if the number of resulting columns is the same for
each row in the input.
expandRows
"Expand" the rows of a data.frame or a data.table either by values
specified in a column of the input dataset or by a vector specifying the
number of times to repeat each row.
Reshape, Stacked, and merged.stack now try to guess the "id.vars"
values based on the values in "var.stubs". The values can still be specified
manually.08/10 October 2014
Incremental cleanups and additions to get ready for V1.4.0.
concat.split.compact and concat.split.multiple are now simply wrappers for
cSplit and no longer use :::read.concat to split up the values.concat.split.expanded and concat.split.list now made data.table compatable.concat.split.list and concat.split.expanded given short name forms
(cSplit_l and cSplit_e).Added functions:
cSplit
Before the release of 1.4.0, the basic concat.split* functions would become
simple wrappers for cSplit, which is much more efficient than the previous
implementations. The earlier functions will remain for compatability purposes.
Since cSplit is already in use, it will be an exported function.
stratified
A function to take fixed or proportional samples by group from a data.frame
or data.table.
Non-exported additions:
:::.collapseMe:::.stripWhite:::Names:::trim:::vGrep27 October 2013
numMat and charMat,
concat.split.expanded and concat.split now have an additional argument,
type, which takes a value of either "numeric" or "character". It is set
to a default of type = "numeric" in the case of concat.split.expanded and
type = NULL in the case of concat.split.Added functions:
:::numMat
numMat replaces binaryMat and valueMat for numeric data.
:::charMat
charMat replaces charBinaryMat for string data.
Dropped functions:
Due to changes introduced after recommendations by @flodel, the following
functions have been rewritten as numMat and charMat
20 October 2013
New function added:
:::charBinaryMat
concat.split.expanded did not previously support expanding "character" data.
Due to prompting by @juba, charBinaryMat has been included to handle such cases.
27 August 2013
Stacked and merge.stack. merge.stack is now faster
than Reshape, at least for large datasets.18 August 2013
Stacked and merge.stack now made MUCH faster using almost a pure
data.table solution.17 August 2013
Stacked results in a list of length 1, it is "unlisted" before being returned.Reshape (and as a result, concat.split.multiple(..., direction = "long"))
has been enhanced by the addition of a feature to automatically add an ID
variable if the present "IDs" are not unique.16 August 2013
read.concat updated to use count.fields to determine the correct number of
columns that the resulting data.frame should have.Reshape now has an option to remove the rownames from the output, set to
TRUE by default.12 August 2013
Initial commit of splitstacshape with the following main functions:
concat.split (plus: concat.split.compact, concat.split.expanded,
concat.split.list, and concat.split.multiple) -- To split concatenated
data into more manageable data formats.Reshape -- To help base R's reshape function handle unbalanced data and
simplify the reshape syntax (wide to long only).Stacked -- To selectively stack columns of a data.frame.Non-exported functions are indicated with ::: before their names.
concat.split.compactconcat.split.expandedconcat.split.listconcat.split.multipleconcat.splitmerged.stackReshapeStacked:::binaryMat:::FacsToChars:::NoSep:::othernames:::read.concat:::valueMat