Articles - Tips & Tricks

Personally, to optimize the memory and work on a clean/fresh R/RStudio interface, I manage to start all my R scripts with this code:

Code R :# Clear... [Read more]

In R programming language, to find the length of every elements in a list, the function lengths() can be used.

A simplified format is as follow:

Code R... [Read more]

Loadings are interpreted as the coefficients of the linear combination of the initial variables from which the principal components are constructed.

From a numerical point of view, the... [Read more]

To add into a data frame, the cumulative sum of a variable by groups, the syntax is as follow using the dplyr package and the iris demo data set:

Code R :  library(dplyr) iris... [Read more]

To save multiple ggplots using for loop, you need to call the function print() explicitly to plot a ggplot to a device such as PDF, PNG, JPG file.

For example:



Code R... [Read more]

To open multiple independent R sessions in Mac OSX, type the following bash command in the UNIX Terminal:

Code BASH :  open -n -a "Rstudio"