`NEWS.md`

`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`NA`

s 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).

`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).