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NEWS.md
In splitstackshape: Stack and Reshape Datasets After Splitting Concatenated Values
splitstackshape NEWS
Author/Maintainer : Ananda Mahto
Email : ananda@mahto.info
URL : http://github.com/mrdwab/splitstackshape
BugReports : http://github.com/mrdwab/splitstackshape/issues
1.4.8
Updated to pass CRAN tests due to changes in the RNG sample kinds.
1.4.6
22 July 2018
Interim release to help the data.table team with reverse dependency checks.
1.4.5
05 April 2018
Preparing for transition to V2 of the splitstackshape package.
- Redundant functions are being marked using
.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.
1.4.4
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/48576331/1270695
1.4.3
20 March 2018
- Updated the NAMESPACE to address the NOTES when building the package
1.4.2
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.
1.4.1
18 October 2014
Bug in :::.stripWhite when using "|" as a delimiter fixed.
1.4.0
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.
1.3.8
12 October 2014
Added functions
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.
Enhancement
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.
1.3.1 -- 1.3.7
08/10 October 2014
Incremental cleanups and additions to get ready for V1.4.0.
Enhancement
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:::vGrep
1.3.0
27 October 2013
Feature Changes
- Due to changes resulting from the introduction of
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
- :::binaryMat
- :::valueMat
- :::charBinaryMat
1.2.1
20 October 2013
Feature Changes
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.
1.2.0
27 August 2013
Enhancement
- Further refinement of
Stacked and merge.stack. merge.stack is now faster
than Reshape, at least for large datasets.
1.1.0
18 August 2013
Enhancement
Stacked and merge.stack now made MUCH faster using almost a pure
data.table solution.
1.0.2
17 August 2013
Bugfixes
- When
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.
Feature Changes
New functions added:
- getanID
- :::Names
1.0.1
16 August 2013
Bugfixes
read.concat updated to use count.fields to determine the correct number of
columns that the resulting data.frame should have.
Feature change
Reshape now has an option to remove the rownames from the output, set to
TRUE by default.
1.0
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.
Full list of functions
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
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splitstackshape documentation built on May 1, 2019, 8:20 p.m.
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splitstackshape NEWS
Author/Maintainer : Ananda Mahto Email : ananda@mahto.info URL : http://github.com/mrdwab/splitstackshape BugReports : http://github.com/mrdwab/splitstackshape/issues
1.4.8
Updated to pass CRAN tests due to changes in the RNG sample kinds.
1.4.6
22 July 2018
Interim release to help the data.table team with reverse dependency checks.
1.4.5
05 April 2018
Preparing for transition to V2 of the splitstackshape package.
- Redundant functions are being marked using
.Deprecated(). These includeconcat.split.multipleandconcat.split.compact, both of which can now just directly usecSplit. cSplit_fhas 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.
stratifiedhas been fixed.cSplit_fhas been removed.
1.4.4
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/48576331/1270695
1.4.3
20 March 2018
- Updated the NAMESPACE to address the NOTES when building the package
1.4.2
23 October 2014
listCol_landlistCol_wadded as utilities for unlisting or flattening columns stored aslists indata.frames anddata.tables.
1.4.1
18 October 2014
Bug in :::.stripWhite when using "|" as a delimiter fixed.
1.4.0
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.
1.3.8
12 October 2014
Added functions
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.
Enhancement
Reshape,Stacked, andmerged.stacknow try to guess the "id.vars" values based on the values in "var.stubs". The values can still be specified manually.
1.3.1 -- 1.3.7
08/10 October 2014
Incremental cleanups and additions to get ready for V1.4.0.
Enhancement
concat.split.compactandconcat.split.multipleare now simply wrappers forcSplitand no longer use:::read.concatto split up the values.concat.split.expandedandconcat.split.listnow madedata.tablecompatable.concat.split.listandconcat.split.expandedgiven short name forms (cSplit_landcSplit_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:::vGrep
1.3.0
27 October 2013
Feature Changes
- Due to changes resulting from the introduction of
numMatandcharMat,concat.split.expandedandconcat.splitnow have an additional argument,type, which takes a value of either"numeric"or"character". It is set to a default oftype = "numeric"in the case ofconcat.split.expandedandtype = NULLin the case ofconcat.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
- :::binaryMat
- :::valueMat
- :::charBinaryMat
1.2.1
20 October 2013
Feature Changes
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.
1.2.0
27 August 2013
Enhancement
- Further refinement of
Stackedandmerge.stack.merge.stackis now faster thanReshape, at least for large datasets.
1.1.0
18 August 2013
Enhancement
Stackedandmerge.stacknow made MUCH faster using almost a puredata.tablesolution.
1.0.2
17 August 2013
Bugfixes
- When
Stackedresults 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.
Feature Changes
New functions added:
- getanID
- :::Names
1.0.1
16 August 2013
Bugfixes
read.concatupdated to usecount.fieldsto determine the correct number of columns that the resultingdata.frameshould have.
Feature change
Reshapenow has an option to remove therownamesfrom the output, set toTRUEby default.
1.0
12 August 2013
Initial commit of splitstacshape with the following main functions:
concat.split(plus:concat.split.compact,concat.split.expanded,concat.split.list, andconcat.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.
Full list of functions
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
Try the splitstackshape package in your browser
Any scripts or data that you put into this service are public.
R Package Documentation
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We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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