rescale(I(x), ...) and rescale_mid(I(x), ...) return I(x) unaltered
(@teunbrand, #403).difftime objects (#382)difftime objects. label_timespan() adds
functionality for adding correct unit suffix to timespan data,
breaks_timespan() adds functionality for finding pleasant breakpoints across
the various bases in time units, while transform_timespan() wraps it all
together and provides an alternative to transform_hms() (#212)train_continuous() coerces new to numeric before calculating range
(@teunbrand, #369).fct argument of train_discrete() is used (#383)DiscreteRange class now keeps track on whether it has been trained on
factor data.transform_*-prefixed names
instead of *_trans-suffixed names. This allows for a better tab-completion
search of transformations. The S3 class of transformations has been
renamed from "trans" to "transform". new_transform() replaces
trans_new() and trim_to_domain() replaces trans_range(). All old
functions are kept for posterity.transform_sqrt() no longer returns an inverse for values outside of its
domain (#214)transform_asinh(),
which provides a logarithm-like transformation of a space, but which
accommodates negative values (#297)transform_compose() (@mjskay, #408).scale_cut argument in number() now works as advertised for values
below the lowest cut value (#346)scale_cut will now choose a more appropriate cut in the case of the first
cut creating an irrational-ish number.style_positive argument in label_*() functions.
Setting this to "space" will add a figure space in front of the number to
make it easier to align positive and negative values as figure space takes up
the same amount of space as - (#366)label_dollar() has been superseeded by label_currency() for clarity (#344)pal_-prefix. The old _pal-suffixed versions
are kept for backward compatibility..Rd.label_number():
New style_positive and style_negative argument control how positive and
negative numbers are styled (#249, #262).
The prefix comes after the negative sign, rather than before it, yielding
(e.g) the correct -$1 instead of $-1.
New scale_cut argument enables independent scaling of different parts of
the range. This is useful in label_dollar() to support scaling
of large numbers by suffix (e.g. "M" for million, "B" for billion). It can
be used with cut_short_scale() when billion = thousand million and
cut_long_scale() when billion = million million (initial implementation
provided by @davidchall). Additionally, the accuracy is now computed per
scale category, so rescaled values can have different numbers of decimal
places (#339).
label_number_si() is deprecated because it previously used
short scale abbreviations
instead of the correct SI prefixes.
You can mimic the previous results with
label_number(scale_cut = cut_scale_short()) or get real SI labels with
label_number(scale_cut = cut_SI("m")) (#339, with help from @davidchall).
label_bytes() now correctly accounts for the scale argument when choosing
auto units (@davidchall, #235).
label_date() and label_time() gain a locale argument that allows you
to set the locale used to generate day and month names (#309).
New label_log() displays the base and a superscript exponent, for use with
logarithmic axes (@davidchall, #312).
New compose_trans() allows arbitrary composition of transformers. This
is mostly easily achieved by passing a character vector whenever you might
previously have passed the name of a single transformer. For example,
scale_y_continuous(trans = c("log10", "reverse")) will create a
reverse log-10 scale (#287).
breaks_width() now supports units like "3 months" in the offset
argument.
col_quantile() no longer errors if data is sufficiently skewed that we
can't generate the requested number of unique colours (#294).
dollar(negative_parens) is deprecated in favour of style_negative = "parens".
hue_pal() respects h.start once again (#288).
label_number_auto() correctly formats single numbers that are greater than
1e+06 without an error (@karawoo, #321)
manual_pal() now always returns an unnamed colour vector, which is easy to
use with ggplot2::discrete_scale() (@yutannihilation, #284).
time_trans() and date_trans() have domains of the correct type so that
they can be transformed without error (#298).
Internal precision(), used when accuracy = NULL, now avoids displaying
unnecessary digits (@davidchall, #304).
breaks_width() now handles difftime/hms objects (@bhogan-mitre, #244).
hue_pal() now correctly inverts color palettes when direction = -1
(@dpseidel, #252).
Internal precision(), used when accuracy = NULL, now does a better
job when duplicate values are present (@teunbrand, #251). It also does a
better job when there's a mix of finite and non-finite values (#257).
New oob_keep() to keep data outside range, allowing for zoom-limits when
oob_keep is used as oob argument in scales. Existing out of bounds
functions have been renamed with the oob_-prefix to indicate their role
(@teunbrand, #255).
ordinal_french() gains plural and gender arguments (@stephLH, #256).
Axis breaks and labels have a new naming scheme: functions that generate
breaks from limits are called breaks_; functions that generate labels
from breaks are called labels_ (#226).
All breaks and labels examples have been overhauled to use new
demo_continuous(), demo_discrete(), and demo_log10(), so you
can see how to use scales functions with ggplot2.
All label functions preserve names (#202) and keep NAs as NAs instead of
trying to convert to "NA" (@clauswilke, #187).
New label_bytes() replaces number_bytes_format() with a more
convenient interface. It takes a single unit argument which can either be
an SI unit (e.g. "kB"), a binary unit (e.g. "kIB"), or an automatic unit
(either "auto_si" or "auto_binary").
It always uses "B" as the symbol for bytes (#174), and checks that units
are valid. Additionally, auto units are now used to determine the symbol
separately for each value (@mikmart):
label_bytes("auto_binary")(1024^(1:3))
#> [1] "1 kiB" "1 MiB" "1 GiB"
New label_date_short() creates labels for a date axis that only show the
components of the date that have changed since the previous label.
For example, if you have Jan 10, Jan 20, Jan 30, and Feb 1,
label_date_short() will use labels Jan 10, 20, 30, Feb 1 (#209).
label_dollar() now correctly formats negative numbers as (e.g.) -$200
(#216).
label_math() now returns an expression vector, and doesn't coerce
inputs to names.
label_number() takes scale into account when computing accuracy, if not
supplied. This means that label_percent() should have better default
accuracy in many cases (#192).
label_number() now picks the accuracy automatically by default. The
underlying heuristic has been improved to use the distance between adjacent
breaks (rather than the total range of the break).
New label_number_auto() automatically picks between number_format() and
scientific_format() based on the range of the input. It should produce nice
output over a very wide range of inputs (@paleolimbot, #208).
New label_number_si() formats numeric vectors with limited SI units.
Individual values are scaled and labelled with abbreviations "K", "M", "B",
or "T" dependent on magnitude (@dpseidel, #83).
label_parse() now generates an expression object that can be used to
display formatted labels in ggplot2 (@agila5, #203).
label_pvalue() now reports values close to 1 (as determined by accuracy)
as (e.g.) ">0.99". You can control the prefixes used with the new
prefix argument (#213).
The built in breaks functions now returns a function that takes both a range and a desired number of breaks, making it possible to overwrite the defaults number of desired breaks given in the constructor call (@thomasp85).
breaks_log() has nicer behaviour when there are no finite inputs (#210).
It also provides usable breaks even with very small ranges (@billdenney, #168)
New breaks_width() which allows you to specify a fixed distance between
breaks (along with optional offset).
New yj_trans() implements the Yeo-Johnson transformation (@zamorarr, #196)
trans objects gets methods for plot() and lines(), and all numeric
transformations get an example showing the transformation.
boxcox_trans() no longer throws an error when given NA values
(@sflippl, #181).
scales now uses the farver package for colour manipulation instead of a combination of grDevices and hand-rolled C++ code (#223).
alpha() now preserves element names (@wibeasley, #195)
ContinuousRange and DiscreteRange methods now properly inherit and are
fully mutable (@dpseidel).
col_numeric(), col_bin(), col_quantile(), and col_factor() now support
viridis colors. Just pass a palette name ("magma", "inferno", "plasma",
or "viridis") as the palette argument (@jcheng5, #191).
col_numeric(), col_bin(), col_quantile(), and col_factor() now have a
reverse parameter, to apply color palettes in the opposite of their usual
order (i.e. high-to-low instead of low-to-high) (@jcheng5, #191).
col_bin() and col_quantile() now take a right argument, which is passed
to base::cut(); it indicates whether the bin/quantile intervals should be
closed on the right (and open on the left), or vice versa (@jcheng5, #191).
col_factor() now tries to avoid interpolating qualitative RColorBrewer
palettes. Instead, it attempts to assign a palette color to each factor level.
Interpolation will still be used if there are more factor levels than
available colors, and a warning will be emitted in that case (@jcheng5, #191).
dichromat_pal() documentation now builds without requiring suggested
dichromat package to be installed (@dpseidel, #172).
date_breaks() now supports subsecond intervals (@dpseidel, #85).
comma_format(), percent_format() and unit_format() gain new arguments:
accuracy, scale, prefix, suffix, decimal.mark, big.mark
(@larmarange, #146).
dollar_format() gains new arguments: accuracy, scale, decimal.mark,
trim (@larmarange, #148).
New number_bytes_format() and number_bytes() format numeric vectors into byte
measurements (@hrbrmstr, @dpseidel).
New number_format() provides a generic formatter for numbers (@larmarange, #142).
New pvalue_format() formats p-values (@larmarange, #145).
ordinal_format() gains new arguments: prefix, suffix, big.mark, rules;
rules for French and Spanish are also provided (@larmarange, #149).
scientific_format() gains new arguments: scale, prefix, suffix, decimal.mark,
trim (@larmarange, #147).
New time_format() formats POSIXt and hms objects (@dpseidel, #88).
boxcox_trans() is now invertible for x >= 0 and requires positive values.
A new argument offset allows specification of both type-1 and type-2 Box-Cox
transformations (@dpseidel, #103).
log_breaks() returns integer multiples of integer powers of base when finer
breaks are needed (@ThierryO, #117).
New function modulus_trans() implements the modulus transformation for positive
and negative values (@dpseidel).
New pseudo_log_trans() for transforming numerics into a signed logarithmic scale
with a smooth transition to a linear scale around 0 (@lepennec, #106).
scales functions now work as expected when it is used inside a for loop. In previous package versions if a scales function was used with variable custom parameters inside a for loop, some of the parameters were not evaluated until the end of the loop, due to how R lazy evaluation works (@zeehio, #81).
colour_ramp() now uses alpha = TRUE by default (@clauswilke, #108).
date_breaks() now supports subsecond intervals (@dpseidel, #85).
Removes dichromat and plyr dependencies. dichromat is now suggested
(@dpseidel, #118).
expand_range() arguments mul and add now affect scales with a range of 0
(@dpseidel,
ggplot2-2281).
extended_breaks() now allows user specification of the labeling::extended()
argument only.loose to permit more flexible breaks specification
(@dpseidel, #99).
New rescale() and rescale_mid() methods support dist objects (@zeehio, #105).
rescale_mid() now properly handles NAs (@foo-bar-baz-qux, #104).
New function regular_minor_breaks() calculates minor breaks as a property
of the transformation (@karawoo).
Adds viridis_pal() for creating palettes with color maps from the
viridisLite package (@karawoo).
Switched from reference classes to R6 (#96).
rescale() and rescale_mid() are now S3 generics, and work with numeric,
Date, POSIXct, POSIXlt and bit64::integer64 objects (@zeehio, #74).
extended_breaks() no longer fails on pathological inputs.
New hms_trans() for transforming hms time vectors.
train_discrete() gets a new na.rm argument which controls whether
NAs are preserved or dropped.
Switched from NEWS to NEWS.md.
manual_pal() produces a warning if n is greater than the number of values
in the palette (@jrnold, #68).
precision(0) now returns 1, which means percent(0) now returns 0% (#50).
scale_continuous() uses a more correct check for numeric values.
NaN is correctly recognised as a missing value by the gradient palettes (ggplot2-1482).
rescale() preserves missing values in input when the range of x is
(effectively) 0 (ggplot2-985).
Continuous colour palettes now use colour_ramp() instead of colorRamp().
This only supports interpolation in Lab colour space, but is hundreds of
times faster.
date_format() gains an option to specify time zone (#51).
dollar_format() is now more flexible and can add either prefixes or suffixes
for different currencies (#53). It gains a negative_parens argument
to show negative values as ($100) and now passes missing values through
unchanged (@dougmitarotonda, #40).
New ordinal_format() generates ordinal numbers (1st, 2nd, etc)
(@aaronwolen, #55).
New unit_format() makes it easier to add units to labels, optionally
scaling (@ThierryO, #46).
New wrap_format() function to wrap character vectors to a desired width.
(@jimhester, #37).
New color scaling functions col_numeric(), col_bin(), col_quantile(),
and col_factor(). These functions provide concise ways to map continuous or
categorical values to color spectra.
New colour_ramp() function for performing color interpolation in the CIELAB
color space (like grDevices::colorRamp(space = 'Lab'), but much faster).
boxcox_trans() returns correct value when p is close to zero (#31).
dollar() and percent() both correctly return a zero length string
for zero length input (@BrianDiggs, #35).
brewer_pal() gains a direction argument to easily invert the order
of colours (@jiho, #36).
show_col() has additional options to showcase colors better (@jiho, #52).
Relaxed tolerance in zero_range() to .Machine$double.eps * 1000 (#33).
Eliminate stringr dependency.
Fix outstanding errors in R CMD check.
floor_time() calls to_time(), but that function was moved into a function
so it was no longer available in the scales namespace. Now floor_time()
has its own copy of that function (Thanks to Stefan Novak).
Color palettes generated by brewer_pal() no longer give warnings when fewer
than 3 colors are requested (@wch).
abs_area() and rescale_max() functions have been added, for scaling the area
of points to be proportional to their value. These are used by
scale_size_area() in ggplot2.
zero_range() has improved behaviour thanks to Brian Diggs.
brewer_pal() complains if you give it an incorrect palette type. (Fixes #15,
thanks to Jean-Olivier Irisson).
shape_pal() warns if asked for more than 6 values. (Fixes #16, thanks to
Jean-Olivier Irisson).
time_trans() gains an optional argument tz to specify the time zone to use
for the times. If not specified, it will be guess from the first input with
a non-null time zone.
date_trans() and time_trans() now check that their inputs are of the correct
type. This prevents ggplot2 scales from silently giving incorrect outputs
when given incorrect inputs.
Change the default breaks algorithm for cbreaks() and trans_new().
Previously it was pretty_breaks(), and now it's extended_breaks(),
which uses the extended() algorithm from the labeling package.
fixed namespace problem with fullseq().
suppressWarnings from train_continuous() so zero-row or all infinite data
frames don't potentially cause problems.
check for zero-length colour in gradient_n_pal().
added extended_breaks() which implements an extension to Wilkinson's
labelling approach, as implemented in the labeling package. This should
generally produce nicer breaks than pretty_breaks().
alpha() can now preserve existing alpha values if alpha() is missing.
log_breaks() always gives breaks evenly spaced on the log scale, never
evenly spaced on the data scale. This will result in really bad breaks for
some ranges (e.g 0.5-0.6), but you probably shouldn't be using log scales in
that situation anyway.
censor() and squish() gain only.finite argument and default to operating
only on finite values. This is needed for ggplot2, and reflects the use of
Inf and -Inf as special values.
bounds functions now force evaluation of range to avoid bug with S3
method dispatch inside primitive functions (e.g. [).
Simplified algorithm for discrete_range() that is robust to
stringsAsFactors global option. Now, the order of a factor will only be
preserved if the full factor is the first object seen, and all subsequent
inputs are subsets of the levels of the original factor.
scientific() ensures output is always in scientific format and off the
specified number of significant digits. comma() ensures output is never in
scientific format (Fixes #7).
Another tweak to zero_range() to better detect when a range has zero length
(Fixes #6).