1898 search results for "EXCEL"

Generate text using Markov Chains (sort of)

January 20, 2017
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Inspired by the hilarious podcast The Greatest Generation, I have worked again with all the lines from all the episode scripts of TNG. Today I will make a clunky bot (although it does nothing and is absolutely not useful) that talks like Captain ...

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Introducing sparklyr to the Madrid R User Group

January 20, 2017
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Introducing sparklyr to the Madrid R User Group

by Carlos Ortega In the last meeting of 2016, the 40th in Madrid’s R Users Group five-year history, we had the opportunity to listen (via Skype) to a very interesting talk by Javier Luraschi, the main author of the package sparklyr. In our previous meeting, a colleague of the Community (José Luis Cañadas) made a

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A Recipe for Automatically Going From Data to Text to Reveal.js Slides

January 20, 2017
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A Recipe for Automatically Going From Data to Text to Reveal.js Slides

Over the last few years, I’ve experimented on and off with various recipes for creating text reports from tabular data sets, (spreadsheet plugins are also starting to appear with a similar aim in mind). There are several issues associated with this, including: identifying what data or insight you want to report from your dataset; (automatically

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Easily explore a table with shinycsv

January 19, 2017
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Easily explore a table with shinycsv

Have you ever had to explore a table with data? I believe the answer is yes for most people that work at a computer or even just use it for communicating with their friends and family. Tables of data pop up everywhere, for example in personal finance. Websites like Mint.com allow you to download your transactions in...

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A basic reproducible data analysis workflow – principles

The goal of reproducible data analysis is, according to the CRAN task view, to tie specific instructions to data analysis and experimental data so that scholarship can be recreated, better understood and verified. In order to prepare a small talk on t...

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Workout Wednesday Redux (2017 Week 3)

January 18, 2017
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Workout Wednesday Redux (2017 Week 3)

I had started a “52 Vis” initiative back in 2016 to encourage folks to get practice making visualizations since that’s the only way to get better at virtually anything. Life got crazy, 52 Vis fell to the wayside and now there are more visible alternatives such as Makeover Monday and Workout Wednesday. They’re geared towards... Continue reading...

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Git Gud with Git and R

January 17, 2017
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Git Gud with Git and R

If you're doing any kind of in-depth programming in the R language (say, creating a report in Rmarkdown, or developing a package) you might want to consider using a version-control system. And if you collaborate with another person (or a team) on the work, it makes things infinitely easier when it comes to coordinating changes. Amongst other benefits, a...

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How to really do an analysis in R (part 1, data manipulation)

January 16, 2017
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How to really do an analysis in R (part 1, data manipulation)

For a couple of years, I’ve been writing about the importance of data analysis, saying that data analysis is essentially the foundation of data science itself. While I admit that there’s room for argument (and I admit that the reality is a little more nuanced) I still firmly believe that data analysis is the true The post

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The Wizarding World of rstudio::conf 2017

January 15, 2017
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The Wizarding World of rstudio::conf 2017

After the success of last January’s “Shiny Dev Con“, our friends at RStudio are back with their first full-blown conference, “rstudio::conf“. Like our own EARL Conference, rstudio::conf was preceeded by training courses from 3 of RStudio’s big names, Hadley Wickham, … Continue reading →

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How to calculate betas (systematic risk) for a large number of stocks

January 15, 2017
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How to calculate betas (systematic risk) for a large number of stocks

A comparison between using a loop, function by and the package dplyr - One of the first examples about using linear regression models in finance is the calculation of betas, the so called market model. Coefficient beta is a measur...

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