We are committed to bringing you 100% authentic exercise sets. We even try to include as different datasets as possible to give you an understanding of different problems. No more classifying Titanic dataset. R has tons of datasets in its library. This is to encourage you to try as many datasets ... [Read more...]

A year ago i wrote about a way to authenticate shiny with Auth0, using Apache: http://blog.datascienceheroes.com/adding-authentication-to-shiny-open-source-edition/ This method works but has some issues, Sebastian Peyrott has written an excellent new blogpost that explains how to add authentication to the Open Source edition of Shiny from scratch, [Read more...]

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This week the folks at Github have open sourced their fork of libcmark (based on the extensive PR by Mathieu Duponchelle), which they use to render markdown text within documents, issues, comments and anything else on the Github website. The new release of the commonmark R package incorporates this library ... [Read more...]

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I'm happy to introduce an add-on package, pdfsearch, that adds the ability to do keyword searches on pdf files. This add-on package uses the excellent pdftools package from the ropensci project to read in pdf files and perform keyword searches based ch... [Read more...]

Recently I wanted to extract a table from a pdf file so that I could work with the table in R. Specifically, I wanted to get data on layoffs in California from the California Employment Development Department. The EDD publishes a list of all of the layoffs in the state ... [Read more...]

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So much time since my last post so I want to post something, no matter what it is, but I hope this will be somehow helpfull In this post I will show some new features for the next version of highcharter package. The main feature added is hc_ad... [Read more...]

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About two years ago we published a quick and easy guide to setting up your own RStudio server in the cloud using the Docker service and Digital Ocean. The process is incredibly easy-- about the only cumbersome part is retyping a random password. Toda... [Read more...]

MANOVA, or Multiple Analysis of Variance, is an extension of Analysis of Variance (ANOVA) to several dependent variables. The approach to MANOVA is similar to ANOVA in many regards and requires the same assumptions (normally distributed dependent variables with equal covariance matrices). This post will explore how MANOVA is performed... ... [Read more...]

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by Wee Hyong Tok, Senior Data Scientist Manager at Microsoft How do you read a novel in record time, and gain insights into the emotional journey of main characters, as they go through various trials and tribulations, as an exciting story unfolds from chapter to chapter? I remembered my experiences ... [Read more...]

[For this exercise, first write down your answer, without using R. Then, check your answer using R.] Answers to the exercises are available here. Exercise 1 Using the following variables: x=1 i=c(1:10) For this exercise, write a for() loop that increments x by two for each i. Exercise 2 Using the ... [Read more...]

(Note: Cross-posted with the Stack Overflow Blog.) When I tell someone Stack Overflow is based in New York City, they’re often surprised: many people assume it’s in San Francisco. (I’ve even seen job applications with “I’m in New York but willing to relocate to San Francisco” ... [Read more...]

Today I am happy to announce a new Facebook group: Data Science Portfolios. This group is for anyone interested in creating a portfolio of data science... The post New Facebook Group: Data Science Portfolios appeared first on AriLamstein.com. [Read more...]

We just launched Joining Data in R with dplyr taught by Garrett Grolemund, the author of Hands-On Programming with R and R for Data Science from O'Reilly Media. This course builds on what you learned in Data Manipulation in R with dplyr by showi... [Read more...]