visualize 4.5.0 - Hotfix - “Seeing is Greek”

CHANGES

• Removed unicode to display variables and inequalities per CRAN request.
• Increased the required R version to v4.0.0.
• Switched deployment from Travis to GitHub Actions
• Added a pkgdown website.

visualize 4.4.0 - Hotfix - “Seeing is Refreshing”

CHANGES

• Updated package structure to reflect modern practices (#9)
• Switched documentation to use markdown (#9).
• Improved the README.Rmd file with new examples (#10).

visualize 4.3.0 - Hotfix - “Seeing is Modern”

CHANGES

• Switched visualize.distribution from being made on library load to being an internal data set stored in sysdata.rda with build files stored in data-raw (#1)
• Switched documentation from Rd over to roxygen2 using Rd2roxygen (#2)

MINOR CHANGES

• Switched NEWS to NEWS.md to take advantage of Markdown formatting. (#5)
• Switched README to use README.Rmd, which generates README.md. (#4)
• Added links to GitHub repository in DESCRIPTION file

BUG FIX

• Corrected outstanding CRAN checks related to malformed DESCRIPTION file and need to import functions (#3)

visualize 4.2.0 - Hotfix - “Seeing is Educational”

• A big thanks to Psychology Drs. Sharon Klinkenberg of the University of Amsterdam, who reported many of the bugs that were addressed in this release!

MINOR CHANGES

• Error handling has been modified such that when improper parameters are supplied in the following scenarios the program will not render a graph and provide log out as to why the graph did not render:
  • Supply 1 statistic for a bounded or tails condition now stops the program from generating a graph. In the console, the user will receive:

  “Supplied stat length < 2 and section=”<bounded,tails>” requires two statistics. Please resubmit with parameter stat=c(lower,upper).”

  • Supply 2 statistics but do not request a bounded or tails condition now stops the program from generating a graph. In the console, users will receive:

  “Supplied stat length > 1 and section=”<lower,upper>” requires one statistic. Please resubmit with stat=your_test_statistic.”

  • Supply only 1 strict value for discrete distributions and request bounded or tails, then the strict value will apply to both ends. In the console, users will receive:

  “Supplied strict length < 2, setting inequalities to”<strict, equal to>” inequality.”

• A warning is now issued when requesting tails option for a nonsymmetric distribution.

BUG FIXES

• Area for the F distribution should now render more reliably underneath the probability density function plot.
• F Distribution correctly renders F-Statistic instead of T-Statistic.
• F Distribution’s parameters (df1,df2) are now correctly rendered.
• If a test statistic for a continuous distribution begins above or below the graph’s bounds, then the graph will render without a highlighted area.
• All graphs involving nonsymmertric distributions now begin on the x-axis at 0.

visualize 4.1.0 - Hotfix - “Seeing is Windowed”

BUG FIX

• Documentation should no longer disappear off screen.

visualize 4.0.0 - Live Update - “Seeing is Split”

NEW

• Two tail evaluations for both continuous and discrete distributions!
• Highlighted shading in continuous distributions!
• Start and End markers for test statistic(s) on x-axis!

DOCUMENTATION

• Updated visualize. functions to account for new section request.

visualize 3.0.0 - Live Update - “Seeing is Strict”

NEW

• Evaluate probabilities with strict inequalities!

MINOR CHANGES

• Rewrote sections to increase efficiency and reliability.

visualize 2.2.0 - Hotfix - “Seeing is Correct”

BUG FIX

• Corrects rendering issue with supplied stat not meeting certain criteria.

visualize 2.1.0 - Hotfix - “Seeing is Off”

BUG FIXES

• Corrects minor graphing labels.
• Revised error handling.

visualize 2.0.0 - Live Update - “Seeing is Believing”

NEW

• Support for the following Continuous Distributions: Cauchy, F, Log Normal, Logistic, T, and Wilcox.
• Bar graph rendering for discrete probability distributions.

MINOR CHANGES

• Rewritten Distribution Wrapper

visualize 1.0.0 - Live Update - “Seeing is Magic”

NEW

• Graph the PDF or PMF of a probability function and determine the probability enclosed.
• See characteristics of the distribution requested (Parameters, Mean, and Variance).
• Supported Continuous Distributions: Chi-squared, beta, gamma, exponential, uniform, and normal.
• Supported Discrete Distributions: Geometric, binomial, poisson, hypergeometric, and negative binomial.

THANKS

• Visualize was made as an independent study project to learn about creating r-packages and explore probability distributions that was approved and mentored by Statistics Professor Jeffrey A Douglas at the University of Illinois at Urbana-Champaign (UIUC).