`roll_diff`

has been simplified and gains a new argument`differences`

to allow for recursive differencing.`roll_lag`

has been simplified. It internally utilises cheapr’s`lag2_`

with the recursive argument always set to`TRUE`

.`time_aggregate`

no longer accepts a group`g`

argument.Removed some unnecessary arguments from

`time_by`

.Deprecated most of the data frame specific

`time_`

functions, with the exception of`time_by`

,`time_episodes`

,`time_expand`

and`time_complete`

.Internal bug fix for period time differences.

`time_aggregate`

gains the`from`

,`to`

,`time_floor`

and`week_start`

arguments.Moved much of the C++ functionality to the cheapr package, which is on CRAN.

`roll_na_fill`

can now also handle data frames.`time_episodes`

has a custom print method displaying key summary metrics.New class

`time_interval`

to represent right-open time intervals.

The internal code of

`time_cut`

has been simplified and improved. It can now also handle very large values of`n`

. When`time_by`

is left`NULL`

, the maximum possible number of breaks used is`( diff(range(x)) / gcd_diff(x) ) + 1`

.`time_cut`

and`time_summarisev`

are now slightly faster.`scm`

now handles vectors containing only`NA`

values appropriately.Exported additional sequence functions.

The default summary functions in

`stat_summarise`

should now work for most vector types.`fdistinct`

is now faster when`sort = TRUE`

.In

`time_episodes`

, the calculation for when there is a mixture of events and non-events has been significantly simplified.New functions

`roll_lag`

and`roll_diff`

for rolling lags and differences.The

`time_roll_`

functions are now faster due to having amended the time window size calculation.`age_years`

is now much faster when there are relatively few distinct pairs of start and end dates compared to the full data.Period-arithmetic is now much faster and more efficient due a new method for time differencing where distinct start-end values are used.

`time_count`

no longer completes implicit missing gaps in time. Use`time_complete`

instead. When using`from`

and`to`

,`time_count`

no longer removes out-of-bounds time values and instead simply converted to`NA`

.tidyverse-style functions now use a new method for data-masking variables which aligns more closely with the tidyverse equivalents. The previous method evaluated the expressions supplied through

`...`

twice, once to generate the variables, and twice to extract the resulting variable names. These are now evaluated once.Improved print method speed for

`year_month`

and`year_quarter`

New classes

`year_month`

and`year_quarter`

. Inspired by ‘zoo’ and ‘tsibble’, these operate similarly but the underlying data is an integer count of months for`year_month`

, and quarters for`year_quarter`

. This means that creating sequences is very fast and arithmetic is simpler and more intuitive on the ‘year-month’ level.`cpp_roll_diff`

and`scm`

now appropriately handle`NA`

values.

New function

`gcd`

for fast calculation of greatest common divisor with tolerance. Time granularity calculations have also been sped up.Fixed a rare build issue using

`R_SHORT_LEN_MAX`

on certain systems. Thanks @barracuda156.

This version brings major performance improvements, including new algorithms for subsetting and rolling calculations.

The

`roll_na_fill`

algorithm has been improved significantly.Calculation of row numbers are faster and more efficient.

All ‘C++’ functions are now registered using the cpp11 package.

`cpp_which`

is now available as a more efficient and sometimes faster alternative to`which`

.The double comparison functions have been migrated to the package ‘cppdoubles’.

`roll_na_fill`

has been mostly rewritten in C++ for speed and efficiency.`roll_growth_rate`

now accepts groups through the`g`

argument.New function

`roll_across`

for grouped rolling calculations.

Fixed a bug where

`sequence2`

would error when`nvec`

was a zero-length vector.Fixed a bug where

`time_granularity`

would error with zero-length vectors.`is_whole_number`

is now faster and the underlying C++ function is safer.Period calculations are now faster and more memory efficient and thus all the time functions are also faster.

The

`.keep_na`

argument of`duplicate_rows`

is now deprecated and replaced with`drop_empty`

.Most Rcpp functions are now more memory efficient due to disabling the RNGscope where possible.

Fixed an integer overflow bug in

`sequence2`

.The

`as_period`

argument in`time_diff`

has been deprecated and removed.`time_num_gaps`

and`time_has_gaps`

now handle`NA`

values more appropriately.‘collapse’

`pivot`

is now used for quantile summaries in`q_summarise`

.timeplyr now utilises relative differences for all double comparisons using Rcpp

All double comparisons are now fully vectorised and recycling occurs without additional memory allocation.

New function

`num_na`

to efficiently calculate number of missing values.timeplyr 0.2.1 published to CRAN

- CRAN submission accepted.