# ggplot2 3.3.5
This is a very small release focusing on fixing a couple of untenable issues
that surfaced with the 3.3.4 release
* Revert changes made in #4434 (apply transform to intercept in `geom_abline()`)
as it introduced undesirable issues far worse than the bug it fixed
(@thomasp85, #4514)
* Fixes an issue in `ggsave()` when producing emf/wmf files (@yutannihilation,
#4521)
* Warn when grDevices specific arguments are passed to ragg devices (@thomasp85,
#4524)
* Fix an issue where `coord_sf()` was reporting that it is non-linear
even when data is provided in projected coordinates (@clauswilke, #4527)
# ggplot2 3.3.4
This is a larger patch release fixing a huge number of bugs and introduces a
small selection of feature refinements.
## Features
* Alt-text can now be added to a plot using the `alt` label, i.e
`+ labs(alt = ...)`. Currently this alt text is not automatically propagated,
but we plan to integrate into Shiny, RMarkdown, and other tools in the future.
(@thomasp85, #4477)
* Add support for the BrailleR package for creating descriptions of the plot
when rendered (@thomasp85, #4459)
* `coord_sf()` now has an argument `default_crs` that specifies the coordinate
reference system (CRS) for non-sf layers and scale/coord limits. This argument
defaults to `NULL`, which means non-sf layers are assumed to be in projected
coordinates, as in prior ggplot2 versions. Setting `default_crs = sf::st_crs(4326)`
provides a simple way to interpret x and y positions as longitude and latitude,
regardless of the CRS used by `coord_sf()`. Authors of extension packages
implementing `stat_sf()`-like functionality are encouraged to look at the source
code of `stat_sf()`'s `compute_group()` function to see how to provide scale-limit
hints to `coord_sf()` (@clauswilke, #3659).
* `ggsave()` now uses ragg to render raster output if ragg is available. It also
handles custom devices that sets a default unit (e.g. `ragg::agg_png`)
correctly (@thomasp85, #4388)
* `ggsave()` now returns the saved file location invisibly (#3379, @eliocamp).
Note that, as a side effect, an unofficial hack `<ggplot object> + ggsave()`
no longer works (#4513).
* The scale arguments `limits`, `breaks`, `minor_breaks`, `labels`, `rescaler`
and `oob` now accept purrr style lambda notation (@teunbrand, #4427). The same
is true for `as_labeller()` (and therefore also `labeller()`)
(@netique, #4188).
* Manual scales now allow named vectors passed to `values` to contain fewer
elements than existing in the data. Elements not present in values will be set
to `NA` (@thomasp85, #3451)
* Date and datetime position scales support out-of-bounds (oob) arguments to
control how limits affect data outside those limits (@teunbrand, #4199).
## Fixes
* Fix a bug that `after_stat()` and `after_scale()` cannot refer to aesthetics
if it's specified in the plot-global mapping (@yutannihilation, #4260).
* Fix bug in `annotate_logticks()` that would cause an error when used together
with `coord_flip()` (@thomasp85, #3954)
* Fix a bug in `geom_abline()` that resulted in `intercept` not being subjected
to the transformation of the y scale (@thomasp85, #3741)
* Extent the range of the line created by `geom_abline()` so that line ending
is not visible for large linewidths (@thomasp85, #4024)
* Fix bug in `geom_dotplot()` where dots would be positioned wrong with
`stackgroups = TRUE` (@thomasp85, #1745)
* Fix calculation of confidence interval for locfit smoothing in `geom_smooth()`
(@topepo, #3806)
* Fix bug in `geom_text()` where `"outward"` and `"inward"` justification for
some `angle` values was reversed (@aphalo, #4169, #4447)
* `ggsave()` now sets the default background to match the fill value of the
`plot.background` theme element (@karawoo, #4057)
* It is now deprecated to specify `guides(<scale> = FALSE)` or
`scale_*(guide = FALSE)` to remove a guide. Please use
`guides(<scale> = "none")` or `scale_*(guide = "none")` instead
(@yutannihilation, #4094).
* Fix a bug in `guide_bins()` where keys would disappear if the guide was
reversed (@thomasp85, #4210)
* Fix bug in `guide_coloursteps()` that would repeat the terminal bins if the
breaks coincided with the limits of the scale (@thomasp85, #4019)
* Make sure that default labels from default mappings doesn't overwrite default
labels from explicit mappings (@thomasp85, #2406)
* Fix bug in `labeller()` where parsing was turned off if `.multiline = FALSE`
(@thomasp85, #4084)
* Make sure `label_bquote()` has access to the calling environment when
evaluating the labels (@thomasp85, #4141)
* Fix a bug in the layer implementation that introduced a new state after the
first render which could lead to a different look when rendered the second
time (@thomasp85, #4204)
* Fix a bug in legend justification where justification was lost of the legend
dimensions exceeded the available size (@thomasp85, #3635)
* Fix a bug in `position_dodge2()` where `NA` values in thee data would cause an
error (@thomasp85, #2905)
* Make sure `position_jitter()` creates the same jittering independent of
whether it is called by name or with constructor (@thomasp85, #2507)
* Fix a bug in `position_jitter()` where different jitters would be applied to
different position aesthetics of the same axis (@thomasp85, #2941)
* Fix a bug in `qplot()` when supplying `c(NA, NA)` as axis limits
(@thomasp85, #4027)
* Remove cross-inheritance of default discrete colour/fill scales and check the
type and aesthetic of function output if `type` is a function
(@thomasp85, #4149)
* Fix bug in `scale_[x|y]_date()` where custom breaks functions that resulted in
fracional dates would get misaligned (@thomasp85, #3965)
* Fix bug in `scale_[x|y]_datetime()` where a specified timezone would be
ignored by the scale (@thomasp85, #4007)
* Fix issue in `sec_axis()` that would throw warnings in the absence of any
secondary breaks (@thomasp85, #4368)
* `stat_bin()`'s computed variable `width` is now documented (#3522).
* `stat_count()` now computes width based on the full dataset instead of per
group (@thomasp85, #2047)
* Extended `stat_ecdf()` to calculate the cdf from either x or y instead from y
only (@jgjl, #4005)
* Fix a bug in `stat_summary_bin()` where one more than the requested number of
bins would be created (@thomasp85, #3824)
* Only drop groups in `stat_ydensity()` when there are fewer than two data
points and throw a warning (@andrewwbutler, #4111).
* Fixed a bug in strip assembly when theme has `strip.text = element_blank()`
and plots are faceted with multi-layered strips (@teunbrand, #4384).
* Using `theme(aspect.ratio = ...)` together with free space in `facet_grid()`
now crrectly throws an error (@thomasp85, #3834)
* Fixed a bug in `labeller()` so that `.default` is passed to `as_labeller()`
when labellers are specified by naming faceting variables. (@waltersom, #4031)
* Updated style for example code (@rjake, #4092)
* ggplot2 now requires R >= 3.3 (#4247).
* ggplot2 now uses `rlang::check_installed()` to check if a suggested package is
installed, which will offer to install the package before continuing (#4375,
@malcolmbarrett)
* Improved error with hint when piping a `ggplot` object into a facet function
(#4379, @mitchelloharawild).
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