QuantLib release 1.4 came out a couple of days ago. Sticking with standard practice, I immediately updated the Debian packages I have been maintaining for over a dozen years now, and corresponding binaries are available for Debian flavors unstable ("sid") and testing ("jessie"). I also updated my RQuantLib package accordingly (though ... [Read more...]

Google Summer of Code opened for students on Monday, March 10, more than a month earlier than last year.  If you weren’t following the announcements and that deadline caught you wrong-footed, all I can say is that the good news is that students will know their fate by April 21, well ... [Read more...]

Now that our ‘Learning R’ -series is coming to an end (for those who missed it, have a look at our Twitter or Facebook ), it is time to announce the start of a new series : R-fiddle of the Week. Every week, we will share an R-fiddle link that contains the ... [Read more...]

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Coming (swiftly and smoothly) back home after this wonderful and intense week in Banff, I hugged my loved ones,  quickly unpacked, ran a washing machine, and  then sat down to check where and how my reasoning was wrong. To start with, I experimented with a toy example in R: and (... [Read more...]

The Swarm Lab presents a nice comparison of R and Python code for a simple (read ‘one could do it in Excel’) problem. The example works, but I was surprised by how wordy the R code was and decided to check if one could easily produce a shorter version. The ... [Read more...]

iNaturalist projects are collection of records posted on iNatualist. Now that we have a R package rinat from rOpenSci I thought of playing around with the data. Here is a function I wrote, to quickly map all the records of a project using ggmap package. We can used get_inat_... [Read more...]

Mango Solutions invite presentations for the EARL (Effective Applications of the R Language) Conference which will be held in London on the 16-17th September 2014. The EARL [Read more...]

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

Has learning R been driving you a bit crazy? If so, it may be that you’re “lost in translation.” On April 21 and 23, I’ll be teaching a webinar, R for SAS, SPSS and Stata Users. With each R concept, … Continue reading → [Read more...]

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After nearly 4 years of developing googleVis on Google Code with SVN we decided to move to GitHub. The main reason was that Google stopped the facility of hosting pre-CRAN builds of the package for user testing. The devtools package on the other hand m... [Read more...]

It is our pleasure to once again offer the intensive R beginner level course for the third time! Beginning this Sunday, the 35 hour course will walk you through the basic operations and characteristics of R, all the way to having a firm understanding of data manipulation and visualization. Also launching ... [Read more...]

I want to follow up the Intraday data post with an example of how you can capture Intraday data without too much effort by recording 1 minute snapshots of the market. I will take market snapshots from Yahoo Finance using following function that downloads delayed market quotes with date and time ... [Read more...]

When listening this week to several talks in Banff handling large datasets or complex likelihoods by parallelisation, splitting the posterior as and handling each term of this product on a separate processor or thread as proportional to a probability density, then producing simulations from the mi‘s and attempting at ... [Read more...]

Hey everybody, this tutorial is about combining two great and powerful tools: R and Google BigQuery. Big Query: So but what is BigQuery? I think Google describes it very well on the developers page: “Querying massive datasets can be time consuming and expensive without the right hardware and infrastructure. Google ... [Read more...]

R 3.0.3 (codename “Warm Puppy) was released several days ago. The full list of new features and bug fixes is provided below. Upgrading to R 3.0.3 You can download the latest version from here. Or, if you are using Windows, you can upgrade to the latest version using the installr package. Simply ... [Read more...]

The crisis that is Syria has had an incredible regional affect geopolitically, economically, and has required a significant response in humanitarian aid.  As the mass evacuation has occurred, surrounding countries are found hosting thousands of pe... [Read more...]

We’re going to be starting a Stan “model of the P” (for some time period P) column, so I thought I’d kick things off with one of my own. I’ve been following the Wingvoet blog, the author of which is identified only by the Blogger handle Wingfeet; ... [Read more...]

Philip Guo, who writes a wonderful blog on his views and experiences of academia – including a lot of interesting programming stuff – came up with a research programming version of The Joel Test last summer, and since then I’ve been thinking of writing a series commenting on how well I ... [Read more...]