Today will be a brief introduction in to circular statistics (sometimes referred to as directional statistics). Circular statistics is an interesting subdivision of statistics involving observations taken as vectors around a unit circle. As an example, imagine measuring birth times at a hospital over a 24-hour cycle, or the directional ... [Read more...]

I teach some of my lab sections using R, and so I need to create lab handouts that include nicely formatted R commands and R output as an example for the students. These handouts will also include exercises where the students will be writing their own R code, or interpreting ... [Read more...]

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Please note, solutions are available here. Exercise 1 Create three vectors  x,y,z  with integers and each vector has 3 elements. Combine the three vectors to become a 3×3 matrix  A  where each column represents a vector. Change the row names to  a,b,c. Think: How about each row represents a ... [Read more...]

By Paulin Shek Despite being only a day conference, a large range of topics were covered over many sectors, with a very long list of impressive speakers. This event was a great opportunity to see what technologies and architectures work … Continue reading → [Read more...]

By Hannah Evans Big Data Week London 2015: a festival of social data around the globe. Fantastically organised and executed by all, the event brings together 400 speakers in 40 different global cities to provide a series of workshops, training, … Continue reading → [Read more...]

by Joseph Rickert 2015 has been a good year for R user groups, both in terms of activity and the number of new groups founded. The plot below which runs 12/30/2012 through the week beginning with Monday 11/23/2015 shows that the number of weekly meeting continues to drift up to the right. You ... [Read more...]

27.11.2015 I created a new Bio7 example which demonstrates how to classify an image with Bio7, ImageJ and R. For the classification I used the “randomForest” R package and an image example of ImageJ so you can reproduce the example quite easily. I made the example script as easy as possible ... [Read more...]

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[This article was first published on Turning numbers into stories, and kindly contributed to R-bloggers]. (You can report issue about the content on this page here) Want to [Read more...]

Today is Thanksgiving Day in the United States, where the nation's citizens pause to reflect on what they are thankful for. I'd like to take this opportunity to give thanks to the members of the R Core Group who developed R, and continue to donate their time to help the ... [Read more...]

The majority of my interaction with the ggplot2 package involves the interactive execution of code to visualize data within the context of exploratory data analysis. This is often a manual process and quite laborious. I recently sought to improve these tasks by creating a series of user defined functions that ... [Read more...]

[social4i size=”large” align=”float-right”] tl;dr: Black Friday $15 Udemy Deal – (until Friday 27th) For the next 24 hours, Udemy is offering [Read more...]

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As most people realize, this is probably one of the most data-rich primary campaigns in history, with hundreds of professional pollsters poring over every data-point trying to understand voter’s intention. So here is another data-rich post to that end. I was glad to discover the University of California at ... [Read more...]

by Andrie de Vries (@RevoAndrie) I frequently get asked the question how you can safely store login details and passwords for use by R, without exposing these details in your script. Yesterday Jennifer Bryan asked this question on twitter and a small storm of views and tweets erupted. Do we ... [Read more...]

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The other day, I was reading in a data set in R, and the function indicated that there was a warning about a parsing error on one line. I went ahead with the analysis anyway, but that small parsing error kept bothering me. I thought it was just one lin... [Read more...]

The other day, I was reading in a data set in R, and the function indicated that there was a warning about a parsing error on one line. I went ahead with the analysis anyway, but that small parsing error kept bothering me. I thought it was just one lin... [Read more...]