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How to clean up environment bindings in knitr sub modules?

This post discusses the management of the environment while running different
parts of the code. The author’s desire is to:

  • Obtain a list of bindings before execution sub-module
  • Execute the code in the sub-module
  • Upon completion of the sub-mode code execution remove anything that was added
    to the environment

Can definitely understand the desire. The approach makes total sense.

Perhaps now is the time for me to learn more about packages and whether that would be
a good approach here. Even running everything inside of a local block could be
an option perhaps?

barNest in R

barNest makes it easy to visualize the decomposition of categorical by its constuent parts.

How can I overwrite a method in R?

This is a nice overview of the problem and one or two solutions.

Milwaukee Data Science: Next Steps

The purpose of this Meetup is to provide a safe, pleasant, and convenient venue (physical and virtual) to facilitate the growth and nurturing of the Data Science community in Southeastern Wisconsin.

Since Data Science covers the entirety of all human endeavors, this group serves to facilitate dialogue and discussion between all realms of mastery. Strategic advisers, managers, investors, health-care administrators, and quantitative analysts will feel equally at home here, as will mathematicians, statisticians, ecologists, biologists, and social-scientists. All realms of mastery are invited and welcomed to join.

Given the limitless application of technology here, all members of the Information Technology field are welcomed to join. All roles are welcome ranging from technical (developers, architects, system and devops administrators) to project managers and business analysts.

Experts and neophytes with interest in particular languages, environments, frameworks, and technologies have a home here. Be it R, Python, Java, or Octave, there is a place for everyone to learn and share. Our doors are equally open to practitioners applying specific technological offerings for every industry and platform.

With a laid back approach open to all ideas, this group will reflect the contributions and participation of its members, in whatever form time and resources permit.

How to read a 1 GiB file into memory in R

Here is the start of a small and good discussion on how to read large data
sets into many. They appears frequently on the list, but this one seemed to
touch upon a lot of the recommended approaches:

R graph gallery

R graph gallery.

Nirmala – Buddha at the Gas Pump Interview

Nirmala – Buddha at the Gas Pump Interview.

Be compassionate

Be [compassionate], for every man is fighting a hard battle

— John Watson, in 1903

Some Lessons

To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

The combination of some data and an aching desire for an answer does not ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey

Via r-help.

ProPublica’s Guide to Mechanical Turk

ProPublica’s Guide to Mechanical Turk seems to definitely be worth a read.