After reading this question I attempted to clean out my workspace and found that each time I opened R all the original items I had recently removed were restored. I then checked .RData and found that it had not been modified in a few weeks even though I repeatedly saved the workspace image. How often is .RData updated and how can I change when .RData is updated so that it reflects more recent changes?
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Most of the time, you'll be better off saving your code rather than saving the objects. Your analyses will be more transparent this way (since it isn't always obvious how a variable came to exist, and it may not mean what you think it means, six months down the line.) The only exception is when a variable is the result of an analysis that took a long time to run, so it isn't practical to repeatedly execute your code. – Richie Cotton May 14 '10 at 13:28
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It gets modified if and when you
- use
save.image() - use
q()and answer yes
Otherwise it does not get changed.
My personal preference is to explicitly load and save data I want to cache across sessions or for further analysis.
Dirk Eddelbuettel
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