Suppose that you would like to create a function which does a series of computations on a data frame. You would like to pass a column as this function’s argument. Something like:

data(cars)


convertToKmh <- function(dataset, col_name){
  dataset$col_name <- dataset$speed * 1.609344
  return(dataset)
}

This example is obviously not very interesting (you don’t need a function for this), but ... [Read more...]

[social4i size=”large” align=”float-right”] Guest post by Stanislaus Stadlmann Have you also been overburdened by the vast selection of R packages to [Read more...]

I’ve been trying to figure out how to generate interactive maps using R, and so naturally i’ve ended up spending an unhealthy amount of time scouring the web looking for a reasonably simple way of getting that done. Finally, I … Continue reading → [Read more...]

[Read more...]

Based on some feedback to a previous post I normalised the birth counts by the (average) number of days in each month. As pointed out by a reader, the results indicate a gradual increase in the number of conceptions during (northern hemisphere) Autumn and Winter, roughly up to the end ... [Read more...]

This is a brief tutorial on the cdlTools package developed by Lu Chen and I to download and perform some simple analysis on USDA's cropland data layer (CDL). This tutorial will cover downloading CDL data, obtaining some zonal statistics, and explore land cover change. This package is not currently available ... [Read more...]

This is a brief tutorial on the cdlTools package developed by Lu Chen and I to download and perform some simple analysis on USDA's cropland data layer (CDL). This tutorial will cover downloading CDL data, obtaining some zonal statistics, and explore land cover change. This package is not currently available ... [Read more...]

[Read more...]

[Read more...]

[Read more...]

At the useR! conference last month, I was pleased to be able to give a couple of talks about the ways that Microsoft is using and integrating R. In my first talk, Hear, See, Move, I shared how data scientists at Microsoft are working to help the disabled: During the ... [Read more...]

[Read more...]

[Read more...]

In a previous post I showed that the data from www.baseball-reference.com support Malcolm Gladwell’s contention that more professional baseball players are born in August than any other month. Although this might be explained by the 31 July cutoff for admission to baseball leagues, it was suggested that it ... [Read more...]

My first R package on CRAN, ttbbeer - After attending the useR! 2016 R Conference, I felt supercharged and armed with new insights and ideas about how to further contribute to the R community. I met wonderful people in real life (IRL) from twitter and heard interesting case studies about using ... [Read more...]

[Read more...]

[Read more...]

A Quick View of Recommender System The main task of recommender system is to predict unknown entries in the rating matrix based on observed values, as is shown in the table below: Each cell with number in it is the rating given by some user on a specific item, while ... [Read more...]

New Free Course: Statistical Inference with swirl The DataCamp team is excited to announce another course using swirl. This free course adapts the Statistical Inference curriculum from swirl to the interactive DataCamp in-browser interface. Log-on and get started!  This course begins with an introduction to probability, then moves on to ... [Read more...]

Below is a very simple way to have https connections for the open source version of RStudio Server and Shiny Server. sudo apt-get install docker sudo apt-get install python-pip sudo pip install docker-compose Now, in your user directory, create a text file using your preferred text editor, called docker-compose.yml [Read more...]