from Wikimedia In my last post I explained why I added a feedback function to googleformr. Since googleformr is an API for collecting data programmatically, I figured I’d leverage it for package development and accessibility. Below I’ll show how you can add your own feedback function to your ... [Read more...]

Version 7 of the forecast package was released on CRAN about a month ago, but I’m only just getting around to posting about the new features. The most visible feature was the introduction of ggplot2 graphics. I first wrote the forecast package before... [Read more...]

Notes: 1. The entire source code of this post in here 2. The PDF version of this post in here In previous two blogs (here and here), we illustrated several skills to build and optimize artificial neural network (ANN) with R and speed up by parallel BLAS libraries in modern hardware platform ... [Read more...]

[Read more...]

Simple, access files with the same IO patterns but different languages (C++, Python) and see the difference. [Read more...]

A new release of Rblpapi is now on CRAN. It provides a direct interface between R and the Bloomberg Terminal via the C++ API provided by Bloomberg Labs (but note that a valid Bloomberg license and installation is required). This marks the fifth release since the package first appeared on ... [Read more...]

I’m starting a new R User Group in Doha, Qatar.  Our first meetup is on 26th May, at the HBKU Student Center in Education City.  I’ll be talking about run-time testing with my assertive package, and there will be two other speakers who I need to find pretty ... [Read more...]

[Read more...]

The other day I run a machine learning backtest on a new data set. Once I got through the LDA and QDA initial run, I decided to try xgboost. The first thing I observed was a really bad performance. The results from the following debugging session were quite surprising to ... [Read more...]

A new minor version (0.8.7) of the FSA (Fisheries Stock Assessment) package was recently released and is now on CRAN. A full description of changes is here. Three major changes are described below. Removed the dynamicPlot=TRUE option fr... [Read more...]

[Read more...]

[Read more...]

Announcing the new shiny apps gallery that showcases the use of Plotly’s R API in Shiny Applications. You can visit the gallery here: https://plot.ly/r/shiny-gallery/ Apps showcase the use of a variety of plotly features including: Adding interactive plotly graphs using plotlyOutput() Embedding ggplot style visualizations ... [Read more...]

[Read more...]

A new minor release of BH is now on CRAN. BH provides a large part of the Boost C++ libraries as a set of template headers for use by R, possibly with Rcpp as well as other packages. This release uses the same Boost 1.60.0 version of Boost as the las... [Read more...]

[Read more...]

At the Bay Area R User Group in February I presented progress in big-join in H2O which is based on the algorithm in R’s data.table package. The presentation had two goals: i) describe one test in great detail so everyone understands what is being tested so they ... [Read more...]

R Tools for Visual Studio, the open-source extenstion to Visual Studio that provides an IDE for the R language, has been upgraded to include several new features. The latest update, RTVS 0.3, now includes: An R package manager, allowing you to review, install, and uninstall packages using a convenient user interface. ... [Read more...]

This post is meant to show R users how to make their own functions. We’ll start with an easy example below. Most of my posts provide R code that can be easily copied into R and replicated at home. This post will be a break from that process since ... [Read more...]

Background and motivation In an earlier post I explored ways that might improve on standard methods for prediction intervals from univariate time series forecasting. One of the tools I used was a convenience function to combine forecasts from Rob Hyndman’s ets and auto.arima functions. David Shaub (with a ... [Read more...]