Recent Posts

• September 02, 2015

  [, [[ and $

  Perhaps [, [[ and $ are the most frequently used functions/operators in R for everyone. But how much do you know about them?Behaviors for vector, matrix and data.framefor vectorI mean, atomic vector like c(5, 1, 10) or recursive vector like list.&...

• August 15, 2015

  R variable assignment and copy

  Assignment: copy-on-modifyWhen you do y = x, y only binds to the memory of data of x. R does not actually allocate new memory and copy x to y. But if you then do x[1] <- 1, R detects the modification and allocate memory for x by copy so that...

• December 15, 2014

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• December 14, 2014

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• December 13, 2014

  Post With A Code Snippet

  You'll find this post in your `_posts` directory - edit this post and re-build (or run with the `-w` switch) to see your changes! To add new posts, simply add a file in the `_posts` directory that follows the convention: YYYY-MM-DD-name-of-post.ex...