How can I remove all objects but one from the workspace in R

Question

I have a workspace with lots of objects and I would like to remove all but one   Ideally I would like to avoid having to type rm obj 1  obj 2    obj n    Is it possible to indicate  remove all objects but these ones

User · Answer

assuming you want to remove every object except df from environment   rm list   ls pattern    df

User · Answer

How about this     Removes all objects except the specified  amp  the function itself   rme  lt - function except NULL     except   ifelse is character except   except  deparse substitute except      rm list setdiff ls envir  GlobalEnv   c except  rme     envir  GlobalEnv

User · Answer

To keep a list of files  one can use   rm list setdiff ls    c  df1    df2

User · Answer

The following will remove all the objects from your console  rm list   ls

User · Answer

Here is a simple construct that will do it  by using setdiff   rm list setdiff ls     x      And a full example   Run this at your own risk - it will remove all variables except x   x  lt - 1 y  lt - 2 z  lt - 3 ls    1   x   y   z   rm list setdiff ls     x     ls    1   x

User · Answer

let s think in different way  what if we wanna remove a group  try this    rm list ls   grep  xxx  ls         I personally don t like too many tables  variables on my screen  yet I can t avoid using them  So I name the temporary things starting with  xxx   so I can remove them after it is no longer used

User · Answer

From within a function  rm all objects in  GlobalEnv except the function  initialize  lt - function country name       if  length setdiff ls pos    GlobalEnv    initialize     gt  0        rm list setdiff ls pos    GlobalEnv    initialize    pos    GlobalEnv

User · Answer

This takes advantage of ls   s pattern option  in the case you have a lot of objects with the same pattern that you don t want to keep    gt  foo1  lt -  junk   foo2  lt -  rubbish   foo3  lt -  trash   x  lt -  gold     gt  ls    1   foo1   foo2   foo3   x      gt    Let s check first what we want to remove  gt  ls pattern    foo    1   foo1   foo2   foo3   gt  rm list   ls pattern    foo     gt  ls    1   x

User · Answer

remove all objects but selected rm list   ls   which  key function     ls

User · Answer

Using the keep function from the gdata package is quite convenient    gt  ls    1   a   b   c   library gdata   gt  keep a   shows you which variables will be removed  1   b   c   gt  keep a  sure   TRUE    setting sure to TRUE removes variables b and c  gt  ls    1   a

User · Answer

require gdata  keep object 1     object n sure TRUE  ls

User · Answer

I think another option is to open workspace in RStudio and then change list to grid at the top right of the environment image below   Then tick the objects you want to clear and finally click on clear

User · Answer

I just spent several hours hunting for the answer to a similar but slightly different question - I needed to be able to delete all objects in R  including functions  except a handful of vectors   One way to do this   rm list ls     ls    in  c  a   c       Where the vectors that I want to keep are named  a  and  c    Hope this helps anyone searching for the same solution

User · Answer

Replace v with the name of the object you want to keep   rm list  ls   ls     v       hat-tip  http   r 789695 n4 nabble com Removing-objects-and-clearing-memory-tp3445763p3445865 html

User · Answer

To keep all objects whose names match a pattern  you could use grep  like so   to remove  lt - ls   to remove  lt - c to remove  grepl   obj   to remove     to remove   rm list to remove

[r] How can I remove all objects but one from the workspace in R?

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