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).