Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives.

1. There are generally two ways to generate uniform and normal random numbers in MATLAB. One ways is to use [functions] randn (for standard normal distribution) and rand …

Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives.

1. To allow opening R from a directory in R in Windows system, we can modify the registry. More specifically, we can add a command name (to be …

Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives.

By default the current working directoly is not in the search path of Ruby. To load a user-written script named "script.rb" into Ruby, you can use …

Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives.

1. There are functions to add points, lines and legends to an existing plot in R. In SAS, there is no way to do this. What you can …

Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives.

1. expand.grid creates a data frame from all possible combinations of supplied vectors or factors. For example,

   > expand.grid(letters[1:2], 1:3, c("+", "-"))
      Var1 Var2 …