tv v2.0.2

• tv::time_varying() gained a sort= argument, to warn the user that things ought to be sorted when x$datetime is a Date.

• Added Peter Martin as a contributor, as he inspired the v2.0.0 rewrite.

tv v2.0.1

• The previous version of tv (< 2.0.0) accidentally silently dropped exposures that had zero (or negative) length. In 2.0.0 this became a non-informative error. It now has an informative error.

tv v2.0.0

• Completely overhauled the internals, for a decent speed boost. In dense data, the speed up in practice is on the order of ~2x. In sparse data, the speed up has been witnessed as high as ~25x.

tv v1.7.3

• Added return values to the documentation and resubmitted to CRAN.

tv v1.7.2

• Submit to CRAN.

tv v1.7.1

• Added logic to tv_min(), tv_max(), et al. to handle cases where there are relevant rows for the feature, but which are all missing. Usually you will want to filter these NA rows out a priori, because they’re almost never what you want.

tv v1.7.0

• Added grid.only= argument to time_varying().

• Thank you, dplyr for changing your minds. Enforce dplyr (>= 1.1.1).

• Added a “How does this actually work” section to the vignette.

tv v1.6.1

• Added multiple = 'all' to one dplyr::inner_join() and one dplyr::left_join().

tv v1.6.0

• Aggregations are now checked to make sure they exist. This includes, in particular, when the aggregation is NA.

• Removed a few imports from the DESCRIPTION that weren’t being used.

tv v1.5.0

• Changed the default number of cores to check if "SLURM_CPUS_PER_TASK" is defined.

tv v1.4.0

• The exposures are now expected to be non-overlapping (although windows can touch when a start time equals an end time).

tv v1.3.0

• Reorganized the help pages.

• Added special behavior for when "lookback_end" or "lookback_start" are NA.

• The grid now includes "exposure_start" and "exposure_stop".

• Added aggregation option "tv_median".

• Added tests with testthat.

tv v1.2.3

• Updated vignette.

• Forced warnings to be printed as they occur, instead of when tv::time_varying() finishes.

tv v1.2.2

• Added the aggregation option "sum".

tv v1.2.1

• Fixed an error message.

tv v1.2.0

• Added an attribute denoting what type of column each of the resulting columns is. This is useful for subsetting for, e.g., xgboost.

tv v1.1.0

• Added id= argument.

tv v1.0.0

• Initial port of code from kernds, removing all kds prefixes.