R Weekly 2017-46 Purrr Map, rstudio::conf

13 Nov 2017

Highlight

• Why use purrr::map instead of lapply?

• rstudio::conf(2018) program now available!

Insights

• Why use purrr::map instead of lapply?

• .rprofile: Mara Averick

R in Organizations

• Recap: EARL Boston 2017

• rstudio::conf(2018) program now available!

• R / Finance 2018 Call for Papers

R in the Real World

• simpsons

• My Linear(ish) Optimization Fantasy (Football)

• How I installed R on Heroku

• From scratch implementation of a one hidden-layer neural network.

• Linear programming in R, with fantasy football as the muse.

• Using Bi-Modal Deep Learning with Rstudio keras, to predict prices of wristwatches on ebay, from an image and a title.

• Visualizing Trees Partition + Tree JavaScript in R

• Machine Learning Explained: Kmeans. Discover how to implement from scratch, interpret and understand kmeans in R.

New Packages

📦 Go Live for More New Pkgs 📦

• hexmapr - Algorithmic generation of gridded maps. Assigning polygons to gridded regions automatically.

• egg - Extensions for ‘ggplot2’, to Align Plots, and Set Panel Sizes

• ggpipe - ggplot with the pipe

• ggeasy - ggplot2 shortcuts (transformations made easy)

• shinymaterial - Implements Material Design in Shiny Applications

Package Releases

• RcppQuantuccia 0.0.2

• RQuantLib 0.4.4: Several smaller updates

Tutorials

• shinymagick - Simple Demo of using Magick with Shiny

• You beautiful, naïve, sophisticated newborn series

• What it’s like to be a developer at Stitch Fix

• A history-oriented introduction to R for Excel users

• Setting fire to deployment: Heroku

• Using Magick with RMarkdown and Shiny

• Automating Summary of Surveys with RMarkdown

• In case you missed it: October 2017 roundup

• R package truncnorm

• Calculating the house edge of a slot machine, with R

• solrium 1.0: Working with Solr from R

• bridgesampling [R package]

• Introduction to Visualizing Asset Returns

• Recap: EARL Boston 2017

• London’s Population Profile in 1935

• R-blog 📝 tips from an inveterate tweeter thereof

• Developing AI applications on Azure: learning plans at three levels

• Because it’s Friday: Drone impact

R Project Updates

Updates from R Core:

• CRAN Policy Change new rev3760

• dput(), etc now print the names() information only once, using the more readable (tag = value) syntax, notably for list()s, i.e., including data frames. These functions gain a new control option "niceNames" (see .deparseOpts()), which when set (as by default) also uses the (tag = value) syntax for atomic vectors. OTOH, without deparse options "showAttributes" and "niceNames", names are no longer shown also for lists.

• m:n now also deparses nicely when m > n.

• The printing of named raw vectors is now formatted nicely as for other such atomic vectors, thanks to Lukas Stadler.

• attach(*, pos = 1) is now an error instead of a warning.

• coef() methods also gain a complete = TRUE optional argument for consistency with vcov().

Upcoming Events

• RStudio conf 2018 January 31 to February 3
  rstudio::conf is about all things R and RStudio!

• satRday Cape Town 2018 March 17
  satRday Cape Town

• R/Finance 2018 June 1 and 2
  Applied Finance with R.

• 7eme Rencontres R 5 & 6 July 2018
  Rennes - Agrocampus

• useR! 2018 July 10, 2018
  The annual useR! conference is the main meeting of the international R user and developer community.

More past events at R conferences & meetups.

Call for Participation

• satRday Cape Town 2018 - Call for papers

Your support will keep R Weekly team moving! 💡

Quotes of the Week

Never too old to learn - I spent my 30s & 40s convincing myself I couldn’t learn programming of any sort - I turned 50 today and I am 4 months deep into learning R and I am loving it! #fab50 #rstats #nevertooold

— Sue Love (@Data_Sue_ATX) November 10, 2017

egg: ggplot2 extension for laying out multiple plots on a page https://t.co/ePdR0R5W43 #rstats pic.twitter.com/ASnyG97uCz

— Stephen Turner (@strnr) November 8, 2017