Link – Page 12 – Wisdom And Wonder

Set image width in org-mode

Make org and export use the same image width via this post:

#+attr_latex: :width 4in :placement [H]
#+attr_org: :width 400
./images/batch-multiple.png

Practicing debugging instance eca20d1a-21de-0a34-ff53-833f3aea7918

This post documents how bugs get de-bugged.

It is short, and sweet, with enough depth to be interesting.

Packrat: A Likely Use Case

This post captures a relatively common occurrence:

New versions of required software are released
They break the software you use
So use previous versions

If you haven’t done so yet, be sure to check out Packrat
to handle a case like this. I will.

Natural Earth public domain map dataset

Natural Earth is a public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales. Featuring tightly integrated vector and raster data, with Natural Earth you can make a variety of visually pleasing, well-crafted maps with cartography or GIS software.

Via Hadley Wickham.

This post poses a seemingly very simple question:
“When is a number an integer?”
and very quickly evolves to provide a delightful exposition of what it means when someone answers with “it depends”.
My vote is that the most intuitive and least-surprising approach is x%%1==0.

A must-see of advanced babel usage in org with R

This post is a must-see of advanced babel usage in org with R

Cross Validated

Cross Validated is a question and answer site for people interested in statistics, machine learning, data analysis, data mining, and data visualization. It’s 100% free, no registration required.

Sometimes R segfaults with quartz

R plotting crashed a lot on OSX on my system:

archey
R --version
brew --version

                 ###
               ####                   User: gcr
               ###                    Hostname: orion
       #######    #######             Distro: OS X 10.9.3
     ######################           Kernel: Darwin
    #####################             Uptime: 2 days
    ####################              Shell: /usr/local/bin/bash
    ####################              Terminal: dumb
    #####################             Packages: 78
     ######################           CPU: Intel Core i7-4960HQ CPU @ 2.60GHz
      ####################            Memory: 16 GB
        ################              Disk: 26%
         ####     #####
R version 3.1.1 (2014-07-10) -- "Sock it to Me"
Copyright (C) 2014 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin13.2.0 (64-bit)
R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under the terms of the
GNU General Public License versions 2 or 3.
For more information about these matters see
http://www.gnu.org/licenses/.
0.9.5

Almost every time that I would use the quartz device, ℝ would segfault.

After changing it to X11, there have not been any segfaults. Perhaps I misunderstood the relationship between how the Brew build interacts with quartz.

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.