R bloggers

Edinbr: Text Mining with R

February 23, 2018
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Edinbr: Text Mining with R

During a very quick tour of Edinburgh (and in particular some distilleries), Dave Robinson (Tidytext fame), was able to drop by the Edinburgh R meet-up group to give a very neat talk on tidy text. The first part of the talk set the scene What does does text mean? Why make text tidy? What sort of problems can you solve. This was a...

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How to set up a sparklyr cluster in 5 minutes

February 23, 2018
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How to set up a sparklyr cluster in 5 minutes

If you've ever wanted to play around with big data sets in a Spark cluster from R with the sparklyr package, but haven't gotten started because setting up a Spark cluster is too hard, well ... rest easy. You can get up and running in about 5 minutes using the guide SparklyR on Azure with AZTK, and you don't...

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Is R base::subset() really that bad?

February 23, 2018
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Is R base::subset() really that bad?

Is R base::subset() really that bad? Notes discussing subset() often refer to the following text (from help(subset), referred to in examples: 1, 2): Warning This is a convenience function intended for use interactively. For programming it is better to use the standard sub-setting functions like [, and in particular the non-standard evaluation of argument subset … Continue reading Is...

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Do tweeps with more followers follow tweeps with more followers? by @ellis2013nz

February 23, 2018
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Do tweeps with more followers follow tweeps with more followers? by @ellis2013nz

Branko Milanovic asked on Twitter: Idea for a paper: “Homogamy” on Twitter. Do people with more followers follow people with more followers? I don’t have time to write a paper but I was sufficiently interested to want to blog about it. Th...

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Xie Yihui, R Superstar and Mensch

February 23, 2018
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Xie Yihui, R Superstar and Mensch

Yesterday a friend told me, “Yihui has written the most remarkably open blog post, and you’ve got to read it.” I did and it was. Though my post here is not about R per se, it is about a great contributor to R, our Yihui, Dr. of Statistics and (according to him) Master of Procrastination. … Continue reading Xie...

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R’s S3 generic-function object-oriented system

February 22, 2018
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R’s S3 generic-function object-oriented system

Just like your mom's chippity chipper recipe - In Data Science, there are numerous instances where different techniques call for the use of different tools. For me, this means hopping between R and python on a weekly basis. I’ve been fortun...

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An introduction to joint modeling in R

February 22, 2018
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An introduction to joint modeling in R

By J Espasandin, O Lado, A Bouzas, A Baluja. You can also check this post, written in #blogdown, here: intro-joint-modeling-r. These days, between the 19th and 21st of February, has taken place the learning activity titled “An Introduction to the … Sigue leyendo →

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Analyzing accelerometer data with R

February 22, 2018
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Analyzing accelerometer data with R

Using your smartphone (any modern phone with a built-in accelerometer should work), visit the Cast Your Spell page created by Nick Strayer. (If you need to type it to your phone browser directly, here's a shortlink: bit.ly/castspell .) Scroll down and click the "Press To Cast!" button, and then wave your phone like a wand using one of the...

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R Tip: Force Named Arguments

February 22, 2018
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R tip: force the use of named arguments when designing function signatures. R’s named function argument binding is a great aid in writing correct programs. It is a good idea, if practical, to force optional arguments to only be usable by name. To do this declare the additional arguments after “...” and enforce that none … Continue reading R...

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Whys and Hows of Apply Family of Functions in R

February 22, 2018
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Introduction to Looping system Imagine you were to perform a simple task, let’s say calculating sum of columns for 3X3 matrix, what do you think is the best way? Calculating it directly using traditional methods such as calculator or even pen and paper doesn’t sound like a bad approach. A lot of us may prefer … Continue reading Whys...

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