.RDATA File Extension

File created by R, a statistical computation and graphing program developed by The R Project for Statistical Computing; saves a workspace, which includes the function and value objects created during an open session in R; used for storing a working environment that can be extended or modified later.

An example object that can be stored in a workspace is a values list such as my_numbers <- n(1,2,3,4,5), which is a numeric values list.

NOTE: R does not show a list of previously created objects when you reopen a workspace. However, you can use the ls or objects commands to display the list of objects. Additionally, another software based on R called RStudio shows the object list in a workspace panel.