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bug adding days to POSIXct object in version 1.7.2 #643

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IanKopacka opened this issue Feb 22, 2018 · 3 comments
Closed

bug adding days to POSIXct object in version 1.7.2 #643

IanKopacka opened this issue Feb 22, 2018 · 3 comments

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@IanKopacka
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@IanKopacka IanKopacka commented Feb 22, 2018

Using lubridate version 1.7.2 I have encountered the following behaviour when adding one day to a POSIXct object:

as.POSIXct("2017-07-01", format = "%Y-%m-%d") + days(1)
# [1] "2017-06-02 02:00:00 CEST"

The month is changed from july to june. This only happens when certain other packages are loaded (e.g. rgdal), and it doesn't happen every time you execute it (?):

library(lubridate)
library(rgdal)
as.POSIXct("2017-07-01", format = "%Y-%m-%d") + days(1)
as.POSIXct("2017-07-01", format = "%Y-%m-%d") + days(1)
# [1] "2017-07-02 CEST"
# [1] "2017-06-02 02:00:00 CEST"

It also doesn't happen with all dates, some dates seem to work fine (e.g. "2017-07-02")

as.POSIXct("2017-07-02", format = "%Y-%m-%d") + days(1)
# [1] "2017-07-03 02:00:00 CEST"

and seems to work when specifying a time zone:

as.POSIXct("2017-07-01", format = "%Y-%m-%d", tz = "CET") + days(1)
# [1] "2017-07-02 CEST"

Here is my session info:

R version 3.4.3 (2017-11-30)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows 7 x64 (build 7601) Service Pack 1

Matrix products: default

locale:
[1] LC_COLLATE=German_Germany.1252  LC_CTYPE=German_Germany.1252   
[3] LC_MONETARY=German_Germany.1252 LC_NUMERIC=C                   
[5] LC_TIME=German_Germany.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] rgdal_1.2-16    sp_1.2-7        lubridate_1.7.2 rj_2.1.0-13    

loaded via a namespace (and not attached):
[1] compiler_3.4.3  magrittr_1.5    tools_3.4.3     rj.gd_2.1.0-2  
[5] Rcpp_0.12.15    stringi_1.1.6   grid_3.4.3      stringr_1.2.0  
[9] lattice_0.20-35
@vspinu
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@vspinu vspinu commented Feb 22, 2018

This is a version of #642. Could you please move the discussion there. Thanks.

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@vspinu
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@vspinu vspinu commented Feb 22, 2018

It should have been fixed in master. Could you please devtools::install_github("tidyverse/lubridate)" and confirm?

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@IanKopacka
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@IanKopacka IanKopacka commented Feb 23, 2018

It works with the latest github version. Thanks!

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@vspinu vspinu closed this Apr 10, 2018
netbsd-srcmastr pushed a commit to NetBSD/pkgsrc that referenced this issue May 30, 2021
Version 1.7.10
==============

### NEW FEATURES

* `fast_strptime()` and `parse_date_time2()` now accept multiple formats and apply them in turn

### BUG FIXES

* [#926](tidyverse/lubridate#926) Fix incorrect division of intervals by months involving leap years
* Fix incorrect skipping of digits during parsing of the `%z` format

Version 1.7.9.2
===============

### NEW FEATURES

* [#914](tidyverse/lubridate#914) New `rollforward()` function
* [#928](tidyverse/lubridate#928) On startup lubridate now resets TZDIR to a proper directory when it is set to non-dir values like "internal" or "macOS" (a change introduced in R4.0.2)
* [#630](tidyverse/lubridate#630) New parsing functions `ym()` and `my()`

### BUG FIXES

* [#930](tidyverse/lubridate#930) `as.period()` on intervals now returns valid Periods with double fields (not integers)



Version 1.7.9
=============

### NEW FEATURES

* [#871](tidyverse/lubridate#893) Add `vctrs` support


### BUG FIXES

* [#890](tidyverse/lubridate#890) Correctly compute year in `quarter(..., with_year = TRUE)`
* [#893](tidyverse/lubridate#893) Fix incorrect parsing of abbreviated months in locales with trailing dot (regression in v1.7.8)
* [#886](tidyverse/lubridate#886) Fix `with_tz()` for POSIXlt objects
* [#887](tidyverse/lubridate#887) Error on invalid numeric input to `month()`
* [#889](tidyverse/lubridate#889) Export new dmonth function

Version 1.7.8
=============

### NEW FEATURES

* (breaking) Year and month durations now assume 365.25 days in a year consistently in conversion and constructors. Particularly `dyears(1) == years(1)` is now `TRUE`.
* Format and print methods for 0-length objects are more consistent.
* New duration constructor `dmonths()` to complement other duration constructors.
*
* `duration()` constructor now accepts `months` and `years` arguments.
* [#629](tidyverse/lubridate#629) Added `format_ISO8601()` methods.
* [#672](tidyverse/lubridate#672) Eliminate all partial argument matches
* [#674](tidyverse/lubridate#674) `as_date()` now ignores the `tz` argument
* [#675](tidyverse/lubridate#675) `force_tz()`, `with_tz()`, `tz<-` convert dates to date-times
* [#681](tidyverse/lubridate#681) New constants `NA_Date_` and `NA_POSIXct_` which parallel built-in primitive constants.
* [#681](tidyverse/lubridate#681) New constructors `Date()` and `POSIXct()` which parallel built-in primitive constructors.
* [#695](tidyverse/lubridate#695) Durations can now be compared with numeric vectors.
* [#707](tidyverse/lubridate#707) Constructors return 0-length inputs when called with no arguments
* [#713](tidyverse/lubridate#713) (breaking) `as_datetime()` always returns a `POSIXct()`
* [#717](tidyverse/lubridate#717) Common generics are now defined in `generics` dependency package.
* [#719](tidyverse/lubridate#719) Negative Durations are now displayed with leading `-`.
* [#829](tidyverse/lubridate#829) `%within%` throws more meaningful messages when applied on unsupported classes
* [#831](tidyverse/lubridate#831) Changing hour, minute or second of Date object now yields POSIXct.
* [#869](tidyverse/lubridate#869) Propagate NAs to all internal components of a Period object

### BUG FIXES

* [#682](tidyverse/lubridate#682) Fix quarter extraction with small `fiscal_start`s.
* [#703](tidyverse/lubridate#703) `leap_year()` works with objects supported by `year()`.
* [#778](tidyverse/lubridate#778) `duration()/period()/make_difftime()` work with repeated units
* `c.Period` concatenation doesn't fail with empty components.
* Honor `exact = TRUE` argument in `parse_date_time2`, which was so far ignored.

Version 1.7.4
=============

### NEW FEATURES

* [#658](tidyverse/lubridate#658) `%within%` now accepts a list of intervals, in which case an instant is checked if it occurs within any of the supplied intervals.

### CHANGES

* [#661](tidyverse/lubridate#661) Throw error on invalid multi-unit rounding.
* [#633](tidyverse/lubridate#633) `%%` on intervals relies on `%m+` arithmetic and doesn't produce NAs when intermediate computations result in non-existent dates.
* `tz()` always returns "UTC" when `tzone` attribute cannot be inferred.

### BUG FIXES

* [#664](tidyverse/lubridate#664) Fix lookup of period functions in `as.period`
* [#649](tidyverse/lubridate#664) Fix system timezone memoization

Version 1.7.3
=============

### BUG FIXES

* [#643](tidyverse/lubridate#643), [#640](tidyverse/lubridate#640), [#645](tidyverse/lubridate#645) Fix faulty caching of system timezone.
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