News

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0.3.0

New features

tinyplot v0.3.0 is a big release with many new features, both internal and user-facing. Related updates are grouped below for easier navigation.

Revamped type logic and functional equivalents

(Primary PR and author: #222 9)

• In addition to the standard character labels ("p", "density", etc.), the type argument now supports functional equivalents (type_points(), type_density(), etc.). These new functional types all take the form type_*().

• The character and functional types are interchangeable. For example,

  tinyplot(Nile, type = "hist")

  and

  tinyplot(Nile, type = type_hist())

  produce exactly the same result.

• The main advantage of the functional type_*() variants is that they offer much more flexibility and control beyond the default case(s). Users can pass appropriate arguments to existing types for customization and can even define their own type_<typename>() functions. More information is available in the dedicated help page for each type (e.g., ?type_hist, ?type_lm, etc.)

• On the development side, overhauling the type system has also allowed us to introduce a number of new plot types and features (see list below). We have also simplified our internal codebase, since explicit argument passing requires less guesswork on our end. Speaking of which, we now recommended that users explicitly pass ancillary type-specific arguments as part of the relevant type_*() call. For example,

  tinyplot(Nile, type = type_hist(breaks = 30))

  is preferable to

  tinyplot(Nile, type = "hist", breaks = 30)

  While the latter option will still work, we cannot guarantee that argument passing will work in every situation. (Reason: Passing ancillary type-specific arguments at the top level of the plot call only works if these do not conflict with the main arguments of the tinyplot() function itself; see #267.)

• Some minor breaking changes were unavoidable; see further below.

• For more details on the new type system, please see the dedicated Plot types vignette on the website.

Support for additional plot types

• Visualizations:

  • type_spineplot() (shortcut: "spineplot") spine plots and spinograms. These are modified versions of a histogram or mosaic plot, and are particularly useful for visualizing factor variables. (#233 @zeileis with contributions from 18)
  • type_qq() (shortcut: “qq”) for quantile-quantile plots. (#251
  • type_ridge() (shortcut: "ridge") for ridge plots aka Joy plots. (#252 9, @zeileis, and 18)
  • type_rug() (shortcut: "rug") adds a rug to an existing plot. (#276
  • type_text() (shortcut: "text") adds text annotations. (9)

• Models:

  • type_glm() (shortcut: "glm") (9)
  • type_lm() (shortcut: "lm") (9)
  • type_loess() (shortcut: "loess") (9)
  • type_spline() (shortcut: "spline") (#241 18)

• Functions:

  • type_abline(): line(s) with intercept and slope (#249 9)
  • type_hline(): horizontal line(s) (#249 9)
  • type_vline(): vertical line(s) (#249 9)
  • type_function(): arbitrary function. (#250 9)
  • type_summary(): summarize values of y along unique values of x (#274

Themes

(Primary PR and authors: #258 9 and 18)

• The new tinytheme() function provides a convenient mechanism for styling plots according to a variety of pre-defined themes, e.g. tinytheme("clean").
• Users can also add their own custom themes or tweak an existing theme.
• Themes are persistent and will affect all subsequent plots until they are explicitly reset, e.g. by calling tinytheme() (with no argument) to restore the default plot aesthetic.
• Behind the scenes, tinytheme() sets a hook for a group graphical parameters by passing them through tpar(). Users can still use tpar() to style their plots manually by setting individual graphical parameters. But going forward we expect that most tinyplot users will prefer the convenience of going through tinytheme().
• More details are provided in the dedicated Themes vignette on the website.

Other new features

• New tinyplot() arguments:

  • flip <logical> allows for easily flipping (swapping) the orientation of the x and y axes. This should work regardless of plot type, e.g. tinyplot(~Sepal.Length | Species, data = iris, type = "density", flip = TRUE). (#216 18)
  • draw = <draw_funcs> allows users to pass arbitrary drawing functions that are evaluated as-is, before the main plotting elements. A core use case is drawing common annotations across every facet of a faceted plot, e.g. text or threshold lines. (#245 18)
  • facet.args gains a free = <logical> sub-argument for independently scaling the axes limits of individual facets. (#253 18)

• tpar() gains additional grid.col, grid.lty, and grid.lwd arguments for fine-grained control over the appearance of the default panel grid when tinyplot(..., grid = TRUE) is called. (#237 18)

• The new tinyplot_add() (alias: plt_add()) convenience function allows easy layering of plots without having to specify repeat arguments. (#246

Breaking changes

• There are a few breaking changes to grouped density plots.
  • The joint smoothing bandwidth is now computed using an observation-weighted mean (as opposed to a simple mean). Users can customize this joint bandwidth by invoking the new type_density(joint.bw = <option>) argument. See the function documentation for details. (#291 18 and @zeileis)
  • Grouped and/or faceted plots are no longer possible on density objects (i.e., via the tinyplot.density() method). Instead, please rather call tinyplot(..., type = "density") or tinyplot(..., type = type_density()) on the raw data and pass grouping or facet arguments as needed. (#284 18)
• The ribbon.alpha argument in tinyplot() has been deprecated. Use the alpha argument in type_ribbon() (and equivalents) instead: e.g., tinyplot(..., type = type_ribbon(alpha = 0.5)).
  • Aside: Please note that this is not equivalent to using tinyplot(..., type = "ribbon", alpha = 0.5) because the latter matches the top-level alpha argument of tinyplot() itself (and thus modifies the entire palette, rather than just the ribbon). See our warning about passing ancillary type-specific arguments above.

Bug fixes

• Better preserve facet attributes, thus avoiding misarrangement of facet grids for density and histogram types. (#209 @zeileis)
• Plots of the form plt(numeric ~ character) now work correctly, with the character variable automatically being coerced to a factor. (#219 @zeileis)
• Respect xlim and ylim when explicitly supplied by the user. (Thanks to @mclements for code submission #221)
• Axis titles for flipped (horizontal) boxplots are appropriately swapped too. (#223 18)
• Ribbon plots without ymin or ymax args, now inherit these values from y (#224 18)
• Plots where y is a factor now work automatically, dispatching to the new type_spineplot() type. Thanks to @zeileis for the original suggestion all the way back in #2 and the eventual solution in #233.
• Free axis scaling now works properly for faceted histograms. The new type_histogram(free.breaks = <logical>, drop.zeros = <logical>) arguments enable fine-grained control over this behaviour. (#228 @eleuven and

Misc

• Continued modularization/abstraction of the code logic. (#214

• Major internal refactor of the type drawing and data processing. (#222

• Documentation improvements, e.g. explicit guidance on how to specify multiple grouping variables (thanks to @strengjacke for reporting #213).
  • The new functional type processing system also means that each type now has its own help page (e.g. ?type_hist, type_ridge, etc.)

0.2.1

New Features:

• The axes argument of tinyplot()/plt() gains extra options for fine-grained control of the plot axes. In addition to the existing logical (TRUE/FALSE) option, users can now specify one of the following character keywords (or, just their first letters as a convenient shorthand):
  • "standard" (with axis, ticks, and labels; equivalent to TRUE),
  • "none" (no axes; equivalent to FALSE),
  • "ticks" (only ticks and labels without axis line),
  • "labels" (only labels without ticks and axis line),
  • "axis" (only axis line and labels but no ticks).
  Simultaneously, the main plotting functions also gain the xaxt and yaxt for separately controlling the two axes using the same keyword options. For example, plt(0:10, xaxt = "l", yaxt = "t") will yield a plot where the x-axis only contains labels and the y-axis contains both labels and ticks, but no axis line. (#190 @zeileis)
• Support additional boxplot arguments like varwidth, notch, etc. Note that tinyplot(..., type = "boxplot", boxwidth = <num>) is equivalent to the boxplot(..., width = <num>); we just use the “box(width)” prefix to avoid conflicting with the existing tinyplot(..., width) argument. (#196 18)

Bug fixes:

• Fix duplicate plots produced with type = "density", which was a regression accidentally introduced in v0.2.0 (#187 18)
• Ensure correct boxplot positioning if x == by, or these two are functionally identical. (#196 18)
• xlab and ylab arguments not respected in some plots. Thanks to @lbelzile for reporting Issue #203.
• Avoid triggering an inadvertent legend when a function transformation of x is plotted against x itself, tinyplot(log(x) ~ x). (#197 @zeileis)
• Facets with interactions and/or multivariate formulas (e.g., complex grid arrangements like tinyplot(mpg ~ wt, data = mtcars, facet = am + vs ~ gear)) now plot all panels correctly, even if some combinations are missing. (#197

• Fix alignment of facet titles when axes are logged. (#207 18)
• Consistent decimals for gradient legends (#277 18)

Internals:

• Continued modularization of the main code logic. (#192 & #198

• Revamped formula processing that allows for better sanity checking and edge-case logic. (#197 @zeileis)

0.2.0

New features:

• Support for additional plot types:
  • type = "n", i.e. empty plot. Since type = "n" implicitly assumes points, which limits the type of legend that can be drawn alongside the empty plot, we have also added a companion empty argument that can be used alongside any plot type. (#157, #167 18)
  • type = "boxplot". Simultaneously enables plt(numeric ~ factor) support, first raised in #2, so that a boxplot is automatically plotted if a numeric is plotted against a factor. (#154 18)
  • type = "polypath". (#159 18)
  • type = "rect". (#161 18)
  • type = "segments". (#163 18)
  • type = "histogram" (alias type = "hist"). (#164 18)
  • type = "jitter" (alias type = "j"). (#170 18)

Internals:

• The main codebase has been significantly refactored (modularized), which should simplify future maintenance and enable better user-level error messages (#171, #173 9)

Misc:

• Various documentation improvements.

0.1.0

Our first CRAN submission! This v0.1.0 release includes the following new features and updates:

License:

• Formally switch to Apache 2.0 license. (#141 18)

Breaking changes:

• To ensure consistent “dot.case” style for all tinyplot() function arguments, the following two arguments have been renamed (old => new):
  • par_restore => restore.par (note the change in word order too!)
  • ribbon_alpha => ribbon.alpha
  We don’t believe that these two arguments are much used in practice. So hopefully it will only have a negligible effect on existing tinyplot code in the wild, even though it is a breaking change. (#149 18)

New features:

• Gradient legends are now supported if a continuous variable is passed to by. Thanks to @zeileis for detailed feedback and advice around the default palette choice (a restricted version of the “viridis” palette), as well as StackOverflow user mnel, whose answer here provided the inspiration for the final implementation. (#122 18)
• Ordered factors now inherit a discrete sequential color palette (“viridis”) by default. Thanks to @zeileis for the suggestion. (#130 18)
• Support user-supplied polygons. (#127 18)
• Support for the lwd argument for adjusting line widths. Similar to pch, lty, etc. this arguments also accepts a “by” convenience keyword to automatically vary line widths by group. (#134 18)
• tpar() now accepts standard par() arguments in addition to the tinyplot-specific ones. This allows users to set or query graphical parameters via a single convenience function, instead having to invoke tpar and par separately. (#140 18)
  • As an aside, tpar() has gained some additional parameters for fine-grained control of global plot defaults, including grid, ribbon.alpha, and various file.* parameters (see next bullet point).
• Users can write plots directly to disk using the new file argument, alongside corresponding width and height arguments for output customization (both of which are defined in inches). For example, tinyplot(..., file = "~/myplot.png", width = 8, height = 5). This implementation relies on a simple internal wrapper around the traditional R external graphics devices like png(), pdf(), etc. But it may prove more convenient, since the current global graphics parameters held in (t)par() are carried over to the external device too and don’t need to be reset. Note that the appropriate device type is determined automatically by the file extension, which must be one of “.png”, “.jpg” (“.jpeg”), “.pdf”, or “.svg”. (#143 18)
• We have a shiny new tinyplot logo. (#148 18)
• The new get_saved_par() function can be used to retrieve the par settings from immediately before or immediately after the preceding tinyplot call. This function replaces some older (non-exported) internal functions that tinyplot was using to restore and control par environments. But it could also prove help to end users who are looking for additional ways to restore par settings after the fact. See ?get_saved_par for some examples. (#152

• tinyplot/plt gaina a new alpha = <numeric[0,1]> convenience argument for adding transparency to plot elements and colours. Example use: plt(rnorm(1e3), pch = 19, alpha = 0.3). (#129 18)
• Similar to the preceding news item, transparency can be added to (grouped) background fill by passing bg (or its alias, fill) a numeric in the range [0,1]. This feature has the same effect as bg = "by" except for the added transparency. Example use: tinyplot(lat ~ long | depth, data = quakes, pch = 21, cex = 2, bg = 0.2). (#129

Bug fixes:

• Fixed bug that prevented tpar(facet.x = ...) args from being passed forward and set correctly. (#137 18)
• Fixed bug where custom legends weren’t working with type = "density". (#147

Internals:

• We no longer ship the vignette(s) with the built package. This helps to reduce the size of the installation tarball and also avoids some redundancy with the actual help documentation (since many of the examples are the same). Note that the vignettes are all still rendered and available online at the tinyplot website. (#135 18)
• Similarly, we anticipate skipping tests on CRAN since the large suite of test snapshots (images) held in inst/tinytest is pushing the install tarball over CRAN’s recommended 5 MB limit. Please note that local testing of the package requires adding the NOT_CRAN=TRUE environment variable to your .Renviron file (or, exporting it in your .bashrc/.zshrc/etc. dotfile if you prefer that approach). (#145 9 & 18)
• Update some test snapshots to match slight changes in the way that R 4.4.0 calculates density grid coords. (#150 18)

0.0.5

IMPORTANT BREAKING CHANGE:

The package has been renamed to tinyplot. (#22 18)

This package renaming also incorporates the following function changes:

• plot2() is replaced by tinyplot() (or its shorthand alias plt()).
• par2() is replaced by tpar().

So, where you used to write…

library(plot2)
plot2(Sepal.Length ~ Petal.Length | Species, iris)

… you should now write:

library(tinyplot)
tinyplot(Sepal.Length ~ Petal.Length | Species, iris)

# Or, use the equivalent shorthand `plt` alias
plt(Sepal.Length ~ Petal.Length | Species, iris)

The package URLs have been updated accordingly:

• GitHub: https://github.com/grantmcdermott/tinyplot
• Website: https://grantmcdermott.com/tinyplot
• R-universe: https://grantmcdermott.r-universe.dev/tinyplot

Many thanks to everyone who provided thoughtful feedback about this prospective name change, especially @zeileis and 9 for kicking off the discussion, as well as the 100+ participants who voted in the social media poll.

For more details about the rational underlying this renaming decision, please see the following GitHub comment, as well as the discussion that preceded it: https://github.com/grantmcdermott/plot2/issues/22#issuecomment-1928472754

0.0.4

Website:

We now have a dedicated website! (#80 9)

New features:

• Support for cex and bg (alias fill) arguments. The latter also permit the “by” convenience keyword similar to lty and pch. This is useful for plotting filled point characters (e.g., pch = 21), where you want a different colour for the fill and border. (#50, #75 18)
• Support for filled density plots. (#58 18)
• The new add argument allows new plot2 objects to be added to / on top of the existing plot window. (#60 18)
• Support for one-sided formulas, e.g. plot2(~ Temp | Month, airquality). (#62 18 and @zeileis)
• Support for plot2(x, type = "density") as an alternative to plot2(density(x)). Works for both the atomic and one-sided formula methods. (#66 18)
• Support for “area” type plots as a special case of ribbon plots. (#68

• Partial matching for palette keywords. (#74 18)
• plot2 gains a new facet argument for drawing faceted plots. Users can override the default square arrangement by passing the desired number of facet rows or columns to the companion facet.args helper function. Facets can be combined with by grouping, or used on their own. (#83, #91, #94, #96, #101, #103 18)
• Users can now control plot2-specific graphical parameters globally via the new par2() function (which is modeled on the base par() function). At the moment only a subset of global parameters, mostly related to legend and facet behaviour, are exposed in par2. But users can expect that more will be added in future releases. (#33, #94 18)

Bug fixes:

• Y-label correctly prints if a function was used for the atomic plot method, e.g. plot2(rnorm(100). (#52 etiennebacher)
• Ribbon plot types are now automatically ordered by the x variable. (#54

• Interval plots like ribbons, errorbars, and pointranges are now correctly plotted even if a y variable isn’t specified. (#54 18)
• Correctly label date-time axes. (#77 18 and @zeileis)
• Improved consistency of legend and facet margins across different plot types and placement, via the new lmar and fmar arguments of par2(). The default legend margin is par2(lmar = c(1,0, 0.1), which means that there is 1.0 line of padding between the legend and the plot region (inside margin) and 0.1 line of padding between the legend and edge of the graphics device (outer margin). Similarly, the default facet padding is par2(fmar = c(1,1,1,1), which means that there is a single line of padding around each side of the individual facets. Users can override these defaults by passing numeric vectors of the appropriate length to par2(). For example, par2(lmar = c(0,0.1) would shrink the inner gap between the legend and plot region to zero, but leave the small outer gap to outside of the graphics device unchanged. (#94 18)
• Fix bug where grid wasn’t auto-expanding correctly for area plots. (#92

0.0.3

Breaking changes:

• Colour palettes are now controlled via a single palette argument that unifies the old palette and (deprecated) palette.args arguments. In addition, the default palette for small groups has been changed from “Okabe-Ito” to “R4”. (#31 and #32 18)
• Legends are now controlled via a single legend argument that unifies the previous (deprecated) legend.position and legend.args arguments. This change also enables several enhancements over the old legend behaviour; see below. (#34 18)

New features:

• Add support for the argument log. (#15 @etiennebacher)
• Add support for grouped density plots. (#18 18)
• Add support for (both grouped and non-grouped) “c”, “h”, “s”, and “S” types. (#26 18)
• Both the pch and lty arguments now accept a “by” convenience keyword for automatically adjusting plot characters and line types by groups. (#28

• Add outside (“!”) placement support for remaining legend keywords, e.g. “top!”, “left!”, “topright!”, etc. Users also gain finer control over many other aspects of the legend via the new unified legend argument, including changing labels, turning of the legend title, and so on. (#34 18)
• Add support for "pointrange", "errobar", and "ribbon" plot types. (#35 9, #40 and #46 18)
• Support grid = TRUE as an alternative to grid = grid(). (#43

Bug fixes:

• Setting par(pch=X) globally is now respected. (#20 18)
• Fix x-axis scale/index when y is NULL. (#24 18)
• Setting a global palette, e.g. palette("ggplot2") is now respected. (#44

0.0.2

Breaking changes:

• Legend defaults have been changed. The default position is now “right!” and drawn without a border, i.e. bty = “n” (#14 by 18).

New features:

• Allow users to specify different pch, lty, and col types per group (#5 and #11 by 9).

Bug fixes:

• Adding further elements to plot2 now works (#13 by 18, thanks @karoliskoncevicius for reporting).

Internals:

• Better formula parsing for plot2.formula (#8 by @zeileis).
• Unit testing scaffolding based on tinysnaphot (#11 by @vincent).

Project:

• 9 and @zeileis have joined the project as core contributors. 🎉

0.0.1

• Initial release on GitHub.