timetools (for r-cran) / News: Recent posts

Date selection on TimeDataFrame can be used for value replacement.
Recursive replacement is enabled for TimeDataFrame.

Bug fixed :
in RegularTimeIntervalDataFrame some extra rows could be added where not required.

Dates selection on TimeInstantDataFrame did not work. Bug fixed.

Data extraction on Time*DataFrame now can be done directly by using date (POSIXct or suitable character strings) :
data['yyyy-mm-dd' , 'yyyy-mm-dd']
data['yyyy-mm-dd' , ]
data[ , 'yyyy-mm-dd'] data['yyyy-mm-dd tz' , ]
data['yyyy-mm-dd hh:mm:ss' , ]
data['yyyy-mm-dd hh:mm:ss tz' , ]

etc.

Bug fixed
Memory usage improved
Title updated

some bugs fixing
new value for the package's Title

• doc deeply completed and reorganised
• some functions rewrited/improved/added : see README file for details

• definition of duplicated.POSIXst
• ajout des fonctions 'unit' et 'of' pour les subtimedataframe (merge ne marche pas sans ça)
• rewritting of Ops.POSIXctp
• doc improvment
• 'POSIXctpnumeric' wes not implemented but 'numericPOSIXctp' was ... now both are
• POSIXctp contructor more flexible
• adding and subtracting 'week' to POSIXct is enabled

v1.5.2 of timetools is released.

It introduces:
- updates in man pages ;
- definition of barplot methods for SubtimeDataFrame, TimeIntervalDataFrame and TimeInstantDataFrame ;
- enhancement in split methods ;
- more detailed documentation of tapply and split sources ;
- removing of the use of roxygen for documentation (that will be completed later).

See README for details.

The algorithm 'changeSupport' methods has been dispatched into 'split' and 'tapply' methods. Those two types of methods are more user friendly to use since they correspond to function available in the base package.

For backward compatibility, 'changeSupport' are still defined but now are simply wrapper to 'tapply' methods. Be aware that default values of arguments are not necessarily equivalent between 'changeSupport' and 'tapply'.... read more

• a split method for signature(ANY,POSIXst) has been added (actually it is a shortcut for "split(x, as.numeric(f))" where f is a POSIXst)

• definition of split methods have been gathered in a unique file

• definition of changeSupport methods have been gathered in a unique file

Here is a summary of new features :
* 'subtime' class has been replaced by 'POSIXst' class.
* use 'POSIXst' methods to define instance of this class.
* SubtimeDataFrame now rely on 'POSIXst' objects.
* functions 'year', 'month', 'minute', 'second', etc. are now wrappers for the 'POSIXst' constructor.
* new methods have been added for 'POSIXctp' and 'POSIXcti' objects (tail, head, summary, split, match, %in%, unique)
* 'natural' mathematical operations between POSIXst (subtimes), POSIXctp (time periods) and POSIXcti (time intervals) are available.

Source control of the timetools package has been moved from subversion to git.

package build for R2.15.0 are available

For 'subtime' functions (and associated), a 'first.day' argument is added. It indicates the first day of week in case of 'wday' subtime.

A 'lapply' function is added for TimeIntervalDataFrame, TimeInstantDataFrame and SubtimeDataFrame.

Plot functions for TimeIntervalDataFrame, TimeInstantDataFrame and SubtimeDataFrame return (invisibly) params used for the plot.