renvironment-variablesobjectbrowserrevolution-r

Where is the physical location of user defined .GlobalEnv variables in R and how to delete them permanently?

Problem: I needed to use Matlab within R. Then I added relevant package R.matlab. I defined variables in a demo example of working with Matlab within R.

The defined variables are: data, path, pathname, x, y The contents of the variables are:

>path
[1] "C:/Revolution/R-Enterprise-7.1/R-3.0.2/library/R.matlab/mat-files"  
>pathname
[1] "C:/Revolution/R-Enterprise-7.1/R-3.0.2/library/R.matlab/mat-files/ABC.mat"  
>data
$A      [,1] [,2] [,3]
 [1,]    1   10   19
....................
 [9,]    9   18   27
$B      [,1]
[1,]    1
..........
[10,]   10

$C
, , 1
[,1] [,2] [,3]
[1,]    1    3    5
[2,]    2    4    6
.......................
, , 3
     [,1] [,2] [,3]
[1,]   13   15   17
[2,]   14   16   18

attr(,"header")
attr(,"header")$description
[1] "MATLAB 5.0 MAT-file, Platform: windows, Software: R v2.15.0, Created on: Sat Mar     31 19:50:00 2012"
attr(,"header")$version
[1] "5"
attr(,"header")$endian
[1] "little"

What I needed is: to obtain a clear R session (no variables/objects in Object Browser) whenever I restart Revolution R. Currently, whenever I restart Revolution R, the above variables (data, path, pathname, x, y) appear in Object Browser.

What I did till now:

  1. I completely deleted R.Matlab folder from my default library location: C:\Revolution\R-Enterprise-7.1\R-3.0.2\library

  2. remove.packages("R.matlab")

  3. Closed Revolution R; Deleted the existing solution file (.sln) in current R working directory; and restarted Revolution R.

Whatever I do, I could not solve: whenever I close Revolution R and restart it, the variables (data, path, pathname, x, y) appear in .GlobalEnv in object browser. I want clear .GlobalEnv when I start Revolution R.

Solution

  • Solution (step by step):

    1. Delete all objects (In Revolution R, from menu: Data - Remove all objects)

    2. In Revolution R, from menu: tools - options - Revolution RPE Options - Automatically Restore Saved Objects(selected:False).

    3. Close Revolution R, restart Revolution R