Blog Archive 2015 Splitting Audio with ffmpeg Aug 08 2015 vi swapping order of tables of counts and labels Jun 13 2015 shell utilities for data analysis Jun 11 2015 fastmail thoughts Jun 06 2015 Regression Questions: Logistic Regression Probabilities Jan 18 2015 Regression Questions: A Coin Teaser Jan 17 2015 2014 interview questions in R Dec 01 2014 java8 improvements Dec 01 2014 probability problems coin flips 01 Aug 21 2014 c++ and const. sigh. Apr 10 2014 splitting files with awk Mar 26 2014 Wordpress to Octopress Migration Mar 26 2014 c++ is horrific Mar 24 2014 replacing sort | uniq Mar 21 2014 2013 Hiring Software Engineers Jun 30 2013 moving to octopress Jun 17 2013 Equifax are Scum Who Sell Your Email Address to Scammers May 20 2013 Useful tweaks for Hadoop on EMR May 07 2013 Modifying the Number of Mappers or Reducers on a Running EMR Cluster May 02 2013 2012 Building lush on OSX Lion Dec 05 2012 Make Private Mode Work in Safari Jul 06 2012 Quoting for Hacker News Jun 28 2012 Howto Make find xargs grep Robust to Spaces in Filenames on a Mac Jun 24 2012 Transpose or Pivot from Bash Jun 12 2012 Two Quotes About the Internet Jun 12 2012 Calculate SHA1 on OSX Jun 06 2012 Engineering Recruiting Jun 04 2012 use *all* the buzzwords May 30 2012 Safari Private Mode is Broken May 24 2012 Useful OSX Utilities for Working in Bash May 22 2012 Machine Learning Fail May 15 2012 grep with inclusion of the first line May 12 2012 2011 Labeled boxplot in R Sep 18 2011 Calculating the hessian of the logistic log likelihood Sep 18 2011 Saving both stdout and stderr while echoing to screen Aug 22 2011 Advantage made my cat have seizures Aug 21 2011 Bash tricks: drop the first line of a file Jul 26 2011 Amazon price jumps Jul 23 2011 Saving output of a command and echoing to the screen Jul 19 2011 Online display advertising ecosystem Jul 19 2011 Unique is broken in R Jul 09 2011 Formatted numbers in Ruby Jun 29 2011 Finding the sort order of an array in R or Ruby Jun 26 2011 Getting the value of a variable from a string in R Jun 25 2011 Windows still sucks, can’t read exfat formatted on a mac Jun 19 2011 Prepping the Reuters 21578 classification sample dataset Jun 18 2011 Thousands Separator in printf in C++ Jun 13 2011 Watching Lecture Videos on Your Computer May 30 2011 2010 Horizontal Paging of Greenplum or Postgres Queries Jan 26 2010 Interactive Plotting in R Jan 25 2010 Querying Postgres or Greenplum From R on a Mac, Installation Instructions Jan 21 2010 Querying Databases From R on a Mac Jan 11 2010 2009 Querying Postgres or Greenplum from R on a Mac Dec 31 2009 Plotting in Grids Dec 29 2009 Querying Databases in R, on Mac OS Sep 07 2009 Querying Databases in R Aug 14 2009 MySQL, Batch Imports, and Rails Aug 13 2009 R Dates - Recovering and Converting From Integers Aug 12 2009 Shading Pieces of an R Plot Aug 11 2009 Matt Riley Rides the Zip Line at Scribd Aug 11 2009 Examining Data Frames – head and tail Aug 02 2009 Zipline Construction Video Jul 29 2009 Picking Subsets of CSV/TSV Files With awk Jul 28 2009 Filled Line Plots / Graphs in R – Part 10 in a Series Jul 28 2009 Building a Zip Line at Scribd Jul 24 2009 Multiple Y Axes in R Plots – Part 9 in a Series Jul 20 2009 In Which Lucy Goes to the Vet Jul 19 2009 Howto Remove Tabs From CSV Files, A Second Method Jul 16 2009 Writing MySQL Query Results to Disk Jul 14 2009 Howto Swap the Order of Columns in a CSV or TSV File - Use awk Jul 14 2009 Howto Transform TSV to CSV, or Just Remove Tabs Jul 14 2009 Visualizing and Comparing Distributions – Part 8 of a Series Jul 13 2009 Multiple Plots and Visualizing Distributions - Part 7 in a Series Jul 12 2009 Removing Extra Column of Data from CSVs in R – R Tip Jul 11 2009 Examining CSV Data Columns From a Shell Jul 10 2009 Labeling Plots - Annotations, Legends, etc – Part 6 in a Series Jul 10 2009 Removing Quotes From csv Files Jul 07 2009 Saving MySQL Query Results into csv Jul 07 2009 Plotting With Custom X Axis Labels in R – Part 5 in a Series Jul 07 2009 Plotting Multiple Series in R – Part 4 in a Series Jul 05 2009 Comparing Many Variables in R with Plots – Part 3 in a Series Jul 04 2009 Saving Plots in R – Part 2 of a Series Jul 03 2009 Basic Plotting in R – Part 1 of a Series Jul 03 2009 Eval in R: Running Code From a String Jun 30 2009 Column Names of R Data Frames Jun 29 2009 Cleaning Data in R: csv files Jun 29 2009 Using R Jun 29 2009