Category: Default
-
Efron-1979
This week’s discussion paper for the PhD Seminar Series in Statistics is Efron, B. (1979). Bootstrap methods: another look at the jackknife. The annals of Statistics, 7(1), 1-26. The reading guide In order to have more fun in the reading, we are aiming to complete the two tasks before Sunday, Dec 22 . Post at…
-
Source a bunch of files under given folders and/or subfolders
I wrote a function sourceDir() that can source all the functions under given folders and/or subfolders. This function is very much like “Set Path” in Matlab.Please visit this page to obtain the update to dated version. https://github.com/feng-li/flutils/blob/master/sourceDir.R To use it more efficiently, I suggest you put the function at some place, e.g. ~/workspace/R_utils/sourceDir.R, and write…
-
How to prevent dropping dimensions in a matrix/array?
When you create a matrix in the usual way like this, > a <- matrix(rnorm(10),2,5) > a [,1] [,2] [,3] [,4] [,5] [1,] 1.3488918 0.6225795 -0.7444514 1.3130491 1.7877849 [2,] -0.2385392 0.5656759 0.9037435 -0.2217444 -0.2656875 the dimension dropped after picking up a single row or column in this way, > b <- a[,1] > b…