Learn R: As a Language

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Image of the book cover

ISBN 9780367182533

My book on R was published on 28 July 2020. The R package ‘learnrbook’ available through CRAN contains data and the R code scripts and chunks from the book. I typeset the book using LaTeX and ‘knitr’. The book is available from the publisher through the book’s web page and from booksellers.

[July 2021] Only two small changes to the code chunks are needed to avoid deprecation messages from ‘tidyverse’ packages. The ‘learnrbook’ package (1.0.2) adds the R code for code chunks in the book as executable and editable .R files. Additional material related to ‘ggplot2’ is available in the vignettes of my packages ‘gginnards’, ‘ggpp’ and ‘ggpmisc’, all available through CRAN.

Reports of errors and suggestions for enhancements are welcome, preferably as Issues raised at https://github.com/aphalo/learnr-book-crc/issues; the source of the book is at https://github.com/aphalo/learnr-book-crc.

 

ggpp 0.4.2

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The package documentation web site at: https://docs.r4photobiology.info/ggpp/ includes a changelog.

Compared to ‘ggpp’ 0.4.1, the following changes have been introduced.

The initial implementation and user interface of three apply statistics first introduced in ‘ggpmisc’ 0.3.6 has been revised to expand their usefulness and to make them less error-prone, while the
fourth one is now defunct.

Note: The default argument for geom in stat_centroid() is likely to change in the near future. Otherwise, the three statistics can be considered now stable.

  • Update stat_apply_group() to support summary functions like
    quantile() that return vectors with more than one value but
    shorter than the original number of observations.
  • Update stat_summary_xy() and stat_apply_group() to return NA x and/or y when .fun.x or .fun.y are not passed anargument. This is a code breaking change with respect to the previous (unstable) version.
  • Update stat_summary_xy() and stat_centroid() to support functions that return a one row data frame, like those defined in ‘ggplot2’ to be passed as argument to parameter fun.data of ggplot2::stat_summary(), such as mean_se, mean_cl_boot , etc.
  • Fix bug in stat_centroid(), stat_summary_xy() and stat_apply_group() resulting in the return of a long data frame with NA values instead of a data frame with fewer rows.
  • Remove stat_apply_panel() , as it was redundant. (Grouping can be modified per layer when needed.)

Please raise issues concerning bugs or enhancements to this package through GitHub at https://github.com/aphalo/ggpp/issues. Pull requests are also welcome.

NOTE: The updated ‘ggpp’ (0.4.2) is on its way to CRAN. The latest development version of the package can be installed from GitHub.

remotes::install_github("aphalo/ggpp")

ggpp 0.4.1

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The package documentation web site at: https://docs.r4photobiology.info/ggpp/ includes a changelog.

Compared to ‘ggpp’ 0.4.0, the following changes have been introduced.

  • Update compute_just2D() and compute_just() to work with any value for the angle aesthetic, as in ‘ggplot2’ (>= 3.3.5).
  • Fix bug in geom_table() that would cause text left or right justified to be clipped when the text in a cell was very long (reported by dryguy). (Cell padding still needs improvement.)

Please raise issues concerning bugs or enhancements to this package through GitHub at https://github.com/aphalo/ggpp/issues. Pull requests are also welcome.

NOTE: The updated ‘ggpp’ (0.4.1) is on its way to CRAN. The latest development version of the package can be installed from GitHub.

remotes::install_github("aphalo/ggpp")

learnrbook 1.0.2

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Package documentation web site at: https://docs.r4photobiology.info/learnrbook/

This is the second version submitted to CRAN for the book as published in the R Series.

This update adds .R files with the code from all chunks in the book, including a few not visible. There are some small edits to the documentation.

NOTE: The updated package is on its way to CRAN.

Please raise issues concerning bugs or enhancements to this package through Bitbucket https://github.com/aphalo/learnrbook-pkg/issues

 

ggpp/ggpmisc and ggbreak

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The recently released ‘ggbreak’ package (= 0.0.3), by Guangchuang Yu and Shuangbin Xu, allows to add scale breaks to plots, an important feature previously unavailable for ggplots. Unfortunately, several geoms from ‘ggpp’ (<= 0.4.0) do not currently work well together with ‘ggbreak’, affecting also ‘ggpmisc’ (<= 0.4.0). In other words, insets and layer created with geoms based on npc pseudo aesthetics are added to all split subpanels. I will see if it is possible to get these packages to cooperate in the future.