Competition Time! Mango Solutions are pleased to offer you an opportunity to win a FREE two day Conference Pass  to the EARL (Effective Application of the R Language) Conference in Boston on 3-4 November. Conference Reception at Boston Science Museum on Tuesday … Continue reading → [Read more...]

[Read more...]

[Read more...]

[Read more...]

We released version 0.2.2 of ChainLadder a few weeks ago. This version adds back the functionality to estimate the index parameter for the compound Poisson model in glmReserve using the cplm package by Wayne Zhang. Ok, what does this all mean? I will r... [Read more...]

We released version 0.2.2 of ChainLadder a few weeks ago. This version adds back the functionality to estimate the index parameter for the compound Poisson model in glmReserve using the cplm package by Wayne Zhang. Ok, what does this all mean? I will run through a couple of examples and look ... [Read more...]

Using R Functions in Python [Read more...]

Geomorph users,We have uploaded version 2.1.7 of geomorph to CRAN. The windows binaries have been compiled and the tarball is available. However, subsequent to this, we found that under certain input scenarios, some of the changes we made to underlying support code had undesirable outcomes. We have corrected these issues ... [Read more...]

[Read more...]

If you've developed a useful function in R (say, a function to make a forecast or prediction from a statistical model), you may want to call that function from an application other than R. For example, you might want to display the forecast (calculated in R) as part of a ... [Read more...]

Recently I wrote a post for DataScience+ (which by the way is a great website for learning about R) explaining how to fit a neural network in R using the neuralnet package, however I glossed over the “how to choose the number of neurons in the hidden layer” part. The ... [Read more...]

In this post, we write a shiny app that lets you display and modify data that is stored in a database table. Shiny and Databases Everybody loves Shiny, and rightly so. It lets you publish reproducible research, brings R applications to non-R users, and can even serve as a general ... [Read more...]

[Read more...]

For this particular example,the variables of interest are stored as key:value pairs anda single data cell could contain multiple (unknown) number of key:value pairs.The objective is to separate these key-value pairs and store the values in co... [Read more...]

There’s an old saying that goes: “If you dream and want something hard enough, but have no commitment….then you’re probably full of shit”. After having finished the Getting and Cleaning Data course on Coursera, I haven’t typed a single line of R … Continue reading → [Read more...]

[Read more...]

Statisticians often need to integrate some function with respect to the multivariate normal (Gaussian) distribution, for example, to compute the standard error of a statistic, or the likelihood function in of a mixed effects model. In many (most?) useful cases, these integrals are intractable, and must be approximated using computational ... [Read more...]

For the problem I reported yesterday, in which my R package was working fine locally but failing on Travis, the key solution is to run update.packages(ask=FALSE) locally, and maybe even update.packages(ask=FALSE, type="source") to be sure to grab the source of packages for which ... [Read more...]

The RHadoop packages make it easy to connect R to Hadoop data (rhdfs), and write map-reduce operations in the R language (rmr2) to process that data using the power of the nodes in a Hadoop cluster. But getting the Hadoop cluster configured, with R and all the necessary packages installed ... [Read more...]

Jane Frazier spoke at our research team meeting today on “Reproducibility in computational research”. We had a very stimulating and lively discussion about the issues involved. One interesting idea was that reproducibility is on a scale, and we can all aim to move further along the scale towards making our ... [Read more...]