regular_minor_breaks() calculates minor breaks as a property of the transformation (@karawoo).
viridis_pal() for creating palettes with color maps from the viridisLite package (@karawoo).
Switched from reference classes to R6 (#96).
rescale_mid() are now S3 generics, and work with
bit64::integer64 objects (@zeehio, #74).
extended_breaks() no longer fails on pathological inputs
hms_trans() for transforming hms time vectors.
train_discrete() gets a new
na.rm argument which controls whether
NAs are preserved or dropped.
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
($100) and now passes missing values through unchanged (#40, @dougmitarotonda).
ordinal_format() generates ordinal numbers (1st, 2nd etc) (@aaronwolen, #55)
unit_format() makes it easier to add units to labels, optionally scaling (@ThierryO, 46)
wrap_format() function to wrap character vectors to a desired width. (@jimhester, #37).
New color scaling functions
col_factor(). These functions provide concise ways to map continuous or categorical values to color spectra.
colour_ramp() function for performing color interpolation in the CIELAB color space (like
grDevices::colorRamp(space = 'Lab'), but much faster).
boxcox_trans() returns correct value when p is close to zero (#31).
percent() both correctly return a zero length string for zero length input (@BrianDiggs, #35)
brewer_pal() gains a
direction argument to easily invert the order of colours (@jiho, #36).
show_col() has additional options to showcase colors better (@jiho, #52)
Relaxed tolerance in
.Machine$double.eps * 1000 (#33).
Eliminate stringr dependency.
Fix outstanding errors in R CMD check
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. (Winston Chang)
functions have been added, for scaling the area of points to be proportional to their value. These are used byscale_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.
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
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
train_continuous so zero-row or all infinite data frames don’t potentially cause problems.
check for zero-length colour in
extended_breaks which implements an extension to Wilkinson’s labelling approach, as implemented in the
labeling package. This should generally produce nicer breaks than
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.
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)