Why should you backup your R objects?

There is a saying that there are two groups of people: those who are already doing backups and those who will. So, how this is linked with reproducible research and R?

If your work is to analyze data then you often face a need to restore/recreate/update results that you have generated some time ago.
You may think ,,I have a knitr reports for everything!”. That’s great! It will save you a lot of troubles. But to have 100% of warranty for exactly same results you need to have exactly the same environment and same versions of packages.

Do you know how many R packages have been updated during last 12 months?

I took list of top 20 R packages from here, scrap dates of their current and older CRAN releases from here and generate a plot with dates of submissions to CRAN sorted along date of last submission.

Czytaj dalej Why should you backup your R objects?