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Category Archives: Link

When is a number an integer?

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 […]

Warn about unexpanded macros on export in org-mode

This post discussed the issues with failing to report macro expansion issues during export of an org document. Most would want publishing to fail if a macro is not defined. Soon, it will. It is now addressed, as confirmed in that same thread.

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 […]

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.

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: ColByCol Mentions true cost of loading a 1 GiB file with read.table, which is much more than […]

R graph gallery

R graph gallery.