In many circumstances, you might want to connect R directly to a database to store and retrieve data. If the source database is an Oracle database, you have a number of options: ROracle RODBC RJDBC Using ROracle should theoretically…
Blog Archives
Retrieving the VIX term structure in R
Much of my time lately has gone into analyzing and trading products in the volatility complex. As a result, I regularly watch the VIX term structure for continuations or deviations from trend. To make analysis simpler, I’ve written some…
Debugging parameter mismatch across RAC database instances with R, dba_hist, and gv$parameter
Did you find this post useful? Does your organization need Oracle services? We can help. Much of this morning went into investigating strange ADDM reports on a two-node Oracle RAC database. For some reason, there were statistically improbable differences…
Tagged with: database, ggplot2, optimizer, oracle, r, rac
Posted in Consulting, Programming, Technology
Posted in Consulting, Programming, Technology
Wordcloud of the Arizona et al. v. United States opinion
Here’s one purely for fun – a wordcloud built from the Supreme Court’s opinion on Arizona et al. v United States. Word clouds, though certainly not the most scientific of visualization techniques, are often engaging and “fun” ways to lead…
Summary of community detection algorithms in igraph 0.6
Based on Launchpad traffic and mailing list responses, Gabor and Tamas will soon be releasing igraph 0.6. In celebration, I’ll be publishing a number of helpful lists and tables I’ve put together to organize information about igraph. In…
Tagged with: clustering, community detection, data, igraph, networks, python, r
Posted in Consulting, Programming
Posted in Consulting, Programming
