Changes in version 1.3.0.9003 This is the current development version of the R package ds4psy available at https://github.com/hneth/ds4psy/. [2026-05-06] Changes since last release: Major changes - Add new i2ds_survey data ($N=104$ participants, $119$ variables) Minor changes - none yet Details - update documentation Versions of ds4psy published on on CRAN: Changes in version 1.3.0 (2026-04-22) Release of ds4psy (1.3.0) on CRAN adds new data and updates links to online resources. [2026-04-22] Changes since last release: Major changes - Add new i2ds_survey data ($N=101$ participants, $119$ variables) Minor changes - Change in hosting service of corresponding textbooks (from https://bookdown.org to https://connect.posit.cloud/hneth/): - Textbooks were originally hosted at https://bookdown.org (up to 2026-01-15). Static versions are still available at https://bookdown.org/hneth/ds4psy/ and https://bookdown.org/hneth/i2ds/, but these are no longer updated. - Future versions are hosted at https://connect.posit.cloud/hneth/. Visit https://hneth-ds4psy.share.connect.posit.cloud/ and https://hneth-i2ds.share.connect.posit.cloud/ for the most recent versions. Details - Updated URLs (in description, citation, and README) to reflect change in book hosting service Changes in version 1.2.0 (2025-11-05) Release of ds4psy (1.2.0) on CRAN adds new data and fixes some bugs. [2025-11-05] Changes since last release: Major changes - Add new i2ds_survey data ($N=60$ participants, $116$ variables) Minor changes - Fix bugs in i2ds_survey data: - Add variable names to art preference tasks - Reverse scale in ranking of food items (e.g., apple, ..., mud) - Add some session information (referrer, date, duration) Details - Bug fix: replace size by linewidth arguments in ggplot2 functions - Improve documentation: - Enumerate and re-arrange variables in i2ds_survey data - Update online documentation Changes in version 1.1.0 (2025-09-12) Release of ds4psy (1.1.0) on CRAN adds functionality, provides new data, and fixes some bugs. [2025-09-13] Changes since last release: Major changes - add i2ds_survey data (36 participants/rows, 112 variables) - add plot_circ_points() function Minor changes - change gender in exp_num_dt into a binary variable (with values "female" vs. "not female") - add deg2rad() and rad2deg() conversion functions Details - new logo Changes in version 1.0.0 (2023-09-15) Release of ds4psy (1.0.0) on CRAN fixes some bugs, but mostly acknowledges the package's stable state. [2023-09-15] Changes since last release: Minor changes - bug fix: Update time zones Details - update status badges - update URLs The current development version of ds4psy is hosted at https://github.com/hneth/ds4psy/. Changes in version 0.9.0 (2022-10-20) Release of ds4psy (0.9.0) on CRAN adds functionality, implements minor changes, and fixes some bugs. [2022-10-20] Changes since last release: Major changes - add base2dec() and dec2base() functions for converting numerals into non-decimal notations, and back. - add chars_to_text() and text_to_chars() functions for converting character vectors into text, and back. Minor changes - add rseed argument to map_text_regex() and plot_chars() for reproducible results. - add collapse_chars() as a wrapper around paste() with a collapse argument. - rearrange contents (by creating dedicated utility files). Details - fix minor bugs. - add Zenodo doi 10.5281/zenodo.7229812 for citations. Changes in version 0.8.0 (2022-04-07) Release of ds4psy (0.8.0) on CRAN adds functionality, increases modularity, and fixes some bugs. [2022-04-08] Changes since last release: Major changes - add a invert_rules() function (for decoding encoded messages by inverting the rules used for encoding). - add a words_to_text() function as the inverse of text_to_words(). - add a zodiac() function (with multiple outputs formats and options for redefining date boundaries). Minor changes - add table9 as a variant of tidyr::table2 as a 3-dimensional array (xtabs). - improved capitalize() to also work for character vectors (i.e., setting the case of each element to upper- or lowercase). Details - fix minor bugs. Changes in version 0.7.0 (2021-05-12) Release of ds4psy (0.7.0) on CRAN adds functionality, increases modularity, and fixes a bug in text data. [2021-05-12] Changes since last release: Major changes - Breaking change: The function read_ascii() was split into 2\ parts (to enable independent access to their functionality): 1. A new read_ascii() version reads text (from file or user input) into a character string; 2. A new map_text_coord() function converts a text string into a table of individual characters (with x/y-coordinates). - Added plot_chars() for plotting characters of text and visualizing pattern matches (specified as regular expressions) by highlighting labels (color/angle) or background tiles (color). The function uses 2\ auxiliary functions: 1. map_text_regex() adds pattern matching options (for colors and angles) to map_text_coord(). 2. plot_charmap() plots character maps as text and tile plots (with aesthetics for labels and tiles). - Added count_chars_words() for counting the frequency of both characters and words in text strings. Minor changes - add plot_mar argument to theme_empty() - add functionality to plot_text() (but see plot_chars()) - add utility functions for locating, identifying, and assigning vectors (of color/angle maps) to text strings matching a pattern - add text_to_chars() and related functions for converting character strings (e.g., text to characters, preserving spaces) - add utility functions for counting the frequency of characters and words in text strings - rename is_vector() to is_vect() as an is_vector() function is defined by the purrr package Details - signal deprecation status in plot_text() - bug fix: remove marked UTF-8 strings from Trumpisms The current development version of ds4psy is hosted at https://github.com/hneth/ds4psy/. Changes in version 0.6.0 (2021-04-08) Release of ds4psy (0.6.0) on CRAN adds functionality, updates data, and reduces dependencies. [2021-04-08] Changes since last release: Major changes - add is_vector() to check for vectors (i.e., atomic vectors or lists) - add get_set() for motivating visualizations Minor changes - update data in fame and Trumpisms Details - remove import of cowplot by adding theme_empty() - reduce reliance on unikn by replacing some colors with corresponding HEX codes Changes in version 0.5.0 (2020-09-01) Release of ds4psy (0.5.0) on CRAN adds and revises functionality, updates data, and fixes bugs. [2020-09-01] Changes since last release: Major changes - Additional functions for dates and times: - add diff_dates() to compute temporal differences between dates (in human time units of years, months, and days) - add diff_times() to compute temporal differences between times (in human time units of years, ..., and seconds) - add diff_tz() to compute time difference based on time zone differences - add days_in_month() to obtain number of days in months for given dates (accounting for leap years) - add is_equal() and num_equal() to check pairwise (near) equality of vectors - add theme_clean() as an alternative to theme_ds4psy() Minor changes - rename is.wholenumber() to is_wholenumber() - revise arguments of sample_date() and sample_time() to align with sample() - revise theme_ds4psy() to provide control over colors of backgrounds, lines, and text elements - update fame data Details - bug fix: num_as_char() now also works for negative numbers. - bug fix: Remove alternative solution in is_leap_year() (which yielded FALSE for NA inputs). - bug fix: Replace \u2212 (minus sign) by - (dash) in exp_num_dt$blood_type to prevent Note on "marked UTF-8 strings". Changes in version 0.4.0 (2020-07-06) Release of ds4psy (0.4.0) on CRAN adds new functionality and fixes minor bugs. [2020-07-06] Changes since last release: Major changes - This version adds support for processing data with dates and times: - simple date and time functions now include options for returning dates or times, rather than strings. - add time zone support to various functions. - add datasets with date and time variables. Minor changes - change_tz() and change_time() functions for changing the display of calendar times ("POSIXct") to local times ("POSIXlt") in different time zones tz, and vice versa (i.e., changing actual time, but preserving time display). - is_leap_year() function checks dates and times (or integers denoting years in 4-digit "%Y" format) for falling within a leap year. - data in dt_10 and exp_num_dt support exercises on dates and times. - cur_date() and cur_time() now print date/time (as string) or return a "Date"/"POSIXct" object. - what_date() and what_time() gain support for adding time zones tz (but no active conversion). - sample_time(): Switch default to sampling "POSIXct" objects (making "POSIXlt" optional) and allow specifying time zones tz. - All date and time functions based primarily on dates (cur_date(), what_date(), etc.) now use Sys.Date() (i.e., an object of class "Date") rather than Sys.time() (i.e., a "POSIXct" calendar time) as default. Details - bug fix: Distinguish is.wholenumber() from is.integer() - bug fix: Use \u... rather than \U... in Umlaut definitions - bug fix: Remove non-ASCII characters from fruits and flowery Changes in version 0.3.0 (2020-06-15) Release of ds4psy (0.3.0) on CRAN adds new functionality (e.g., support for processing text data, new datasets, and functions). [2020-06-15] Changes since last release: Major changes - add functions and datasets for string manipulation and text processing Minor changes - add text_to_sentences() and text_to_words() functions for text processing - add count_words() (in analogy to count_chars()) function for text processing - add cclass (as a named character vector) for matching character classes in regular expressions - add metachar (as a character vector) for matching meta-characters in regular expressions - add Umlaut (as a named character vector) for showing and selecting German Umlaut characters - add datasets of countries, fruits, and flowery phrases (as character vectors) - add datasets of Bushisms and Trumpisms (as character vectors) - add sample_char() function Details - add Travis integration to README.Rmd - rename count_char() to count_chars() (to use plural form) - rename sample_date() and sample_time() (to use singular form) - rename family of text functions to text objects and functions - rename family of random functions to sampling functions Changes in version 0.2.1 (2020-05-06) Release of ds4psy (0.2.1) on CRAN is a maintenance release (to remove some dependencies, fix bugs on CRAN platforms, and add some datasets). [2020-05-06] Changes since last release: Major changes - remove dependencies on the here and tibble packages (and remove from declared Imports). Minor changes - add 4 messy table versions of ficticious experiment data (used in Exercise 1 of Chapter 7: Tidying data Four messes and one tidy table) to the package: t_1--t_4. Details - bug fix: Replace what_day with a simpler version that omits unit and as_integer arguments (to avoid WARN on CRAN for r-devel-linux-x86_64-debian-clang) - bug fix: Remove .data$... elements from aes() in ggplot calls - bug fix: Add utils::globalVariables(...) to avoid Warning NOTE "Undefined global functions or variables" - bug fix: Remove packages not used in this version (i.e., dplyr, and magrittr) from declared Imports Changes in version 0.2.0 (2020-04-19) Release of ds4psy (0.2.0) on CRAN adds functionality and fixes some bugs. [2020-04-20] Changes since last release: Major changes Changes involving new functionality include: - add random data generation functions (e.g., for coin() flips and dice() throws) - add is.wholenumber() to test for integer values (mentioned in R oddities) - add plot_text() plotting function - add read_ascii() and count_chars() functions for text processing - add caseflip() and capitalize() functions for text processing - add random date and time generation functions (e.g., for sample_date() and sample_time()) - add simple date and time functions (e.g., cur_date(), cur_time(), for Chapter\ 10: Time data) - add what_ functions for simple date and time queries (for Chapter\ 10: Time data) Minor changes - add data generation function make_grid() for an exercise on visual illusions (Exercise\ 6 of Chapter\ 2) - add fame dataset to illustrate working with dates (Exercise\ 3 of Chapter\ 10) - add utility functions num_as_char() and num_as_ordinal() (to be used in Chapter\ 11: Functions) Details - add documentations of datasets (in data.R) - bug fix: Remove redundant code (from plot_fun.R) - bug fix: Remove packages not used in this version (i.e., readr, stringr, tidyr, and tidyverse) from declared Imports Changes in version 0.1.0 (2019-08-10) Initial release of ds4psy (0.1.0) on CRAN. [2019-08-10] The initial functionality is limited, as the package is designed to support the ds4psy book: - provide book code (from examples and exercises) as a package - provide all data sets currently used in the book (with documentation and references) - provide an initial color scheme and plotting theme - add plotting functions (e.g., of book graphics) for function exploration purposes [File NEWS.md updated on 2026-05-06.]