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scales

ANALYTICS
Velocity0.0

Scale functions, breaks, labels and transformations for data visualization in R

github.com/r-lib/scales ↗

scales keeps widening what ggplot2 can put on an axis.

rggplot2data-visualizationaxis-labelsextensibility
◆Current state
scales supplies the breaks, labels and transformations behind ggplot2's axes and legends. Unlike much of the tidyverse infrastructure around it, it still ships genuine feature work each release: native timespan handling in 1.3.0, then custom range-training classes and label_glue() in 1.4.0.
◆Where it's heading
The arc runs toward extensibility and type coverage. First came built-in support for awkward types like difftime and hms; 1.4.0 inverts that by letting any third-party class participate in range training simply by implementing range() or levels(). Labelling is getting more expressive rather than merely more numerous.
◆Prediction
Expect continued type-support and labelling work, with extension points that let downstream packages plug in their own classes instead of scales enumerating every one.

◆Recent moves

  1. 1y ago

    scales 1.4.0 opens range training to custom classes

    Range training opens up to custom classes: continuous types need a range() method, discrete types a levels() method. Paired with label_glue() for interpolated label strings and unsorted-range handling in fullseq(), this is the extensibility turn the package has been building toward.

    View source ↗
  2. 2y ago

    scales 1.3.0 makes timespans first-class on axes

    Substantial type work centred on durations: label_timespan(), breaks_timespan() and transform_timespan() together make difftime objects first-class on an axis, with rescale() gaining a difftime method. Also stops rescale(I(x)) from altering values it was asked to leave alone.

    View source ↗
  3. 3y ago

    scales 1.2.1 re-documents to fix .Rd HTML issues

    A re-documentation pass fixing HTML in the .Rd files. CRAN hygiene with no functional change.

    View source ↗
  4. 4y ago

    scales 1.2.0 fixes currency sign order and adds scale_cut

    Number formatting gets serious: style_positive and style_negative control sign presentation, the prefix finally lands after the negative sign so currency reads -$1 rather than $-1, and scale_cut allows different parts of a range to be scaled independently. Small details that decide whether a chart looks professional.

    View source ↗
  5. 6y ago

    scales 1.1.1 fixes palette inversion and adds oob_keep()

    A cluster of correctness fixes with real plotting consequences: hue_pal() properly inverts palettes at direction = -1, breaks_width() handles difftime and hms, and precision() copes with duplicates and mixed finite values. New oob_keep() lets data outside the range survive.

    View source ↗
  6. 6y ago

    scales 1.1.0 reorganises breaks and labels into a naming scheme

    The naming reorganisation that gave the package its current shape: functions generating breaks from limits became breaks_, those generating labels from breaks became labels_. Label functions also start preserving names and passing NAs through instead of dropping them.

    View source ↗