925 search results for "SQL"

Odd Connections Inside The NASDAQ-100

May 8, 2015
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Odd Connections Inside The NASDAQ-100

Distinguishing the signal from the noise requires both scientific knowledge and self-knowledge (Nate Silver, author of The Signal and the Noise) Analyzing the evolution of NASDAQ-100 stock prices can discover some interesting couples of companies which share a strong common trend despite of belonging to very different sectors. The NASDAQ-100 is made up of 107 … Continue reading...

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RStudio v0.99 Preview: More Editor Enhancements

May 6, 2015
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RStudio v0.99 Preview: More Editor Enhancements

We’ve blogged previously about various improvements we’ve made to the source editor in RStudio v0.99 including enhanced code completion, snippets, diagnostics, and an improved Vim mode. Besides these larger scale features we’ve made lots of smaller improvements that we also wanted to highlight. You can try out all of these features now in the RStudio

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Dockerizing a Shiny App

April 30, 2015
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After a long pause of more than four months, I am finally back to post here. Unfortunately, many commitments prevented me keep posting, but coming back, i changed the deployment (now this blog runs entirely within a docker container with some other cool things I intend to post more forward) and wrote this post. 1. The post

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How to Add WAR Metrics to your Lahman Database

April 30, 2015
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How to Add WAR Metrics to your Lahman Database

I get a lot of questions on how to calculate WAR in the Lahman database. In the past I’ve discussed ways to calculate wOBA and FIP in Lahman but WAR has always been difficult due to the “closed-source” nature of the calculation. But there is an answer While stumbling around on Baseball Reference one day,

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R, Python, MATLAB, & Excel Dashboards & Graphs with D3.js & WebGL

April 29, 2015
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R, Python, MATLAB, & Excel Dashboards & Graphs with D3.js & WebGL

Web tools like D3.js and WebGL let you make beautiful, interactive 2D and 3D graphs. You can now publish graphs and dashboards with these technologies using Python, R, MATLAB, & Excel. Publishing and sharing is one extra line of code. This post puts you on your way, no downloads or installations required. We’ll start with ggplot2; scroll to see Python and MATLAB plots in 2D and 3D. See our

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Time Series Graphs & Eleven Stunning Ways You Can Use Them

April 22, 2015
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Time Series Graphs & Eleven Stunning Ways You Can Use Them

Many graphs use a time series, meaning they measure events over time. William Playfair (1759 - 1823) was a Scottish economist and pioneer of this approach. Playfair invented the line graph. The graph below–one of his most famous–depicts ho...

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R vs QGIS for sustainable transport planning

April 19, 2015
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R vs QGIS for sustainable transport planning

The 23rd iteration of the GIS Research UK conference (#GISRUK) conference was the largest ever. 250 researchers, industry representatives and academics attended from the vibrant geospatial research communities in the UK, Europe and beyond. GISRUK has become a centrepoint for discussion of new methods, software and applications in the field. I was on the organising committee, reviewed some excellent papers for the event (a full list...

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Boston Elite Field 2015

April 19, 2015
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Boston Elite Field 2015

Last year I posted about how chances of a non-African country winning the Boston Marathon seemed to be good because of the widening interval of winning times (more recently there had been some historically "slower" races and some historically "faster" ...

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Analysing The Rock ‘n’ Roll Madrid Marathon

April 18, 2015
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Analysing The Rock ‘n’ Roll Madrid Marathon

Nobody’s going to win all the time. On the highway of life you can’t always be in the fast lane (Haruki Murakami, What I Talk About When I Talk About Running) I started running two years ago and one if my dreams is to run a marathon someday. One month ago I run my first … Continue reading...

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Forecasting the Argentinian “Blue Dollar”

April 9, 2015
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If you have visited recently my website, Bluelytics, you will notice there is a new section named "Predicción", which is a forecast of the value of the Blue Dollar in a 12-month horizon. You can find it at http://bluelytics.com.ar/#/forecast You will find that it has a minimun value and a maximun value for each month, and it's included in...

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