[R] how to change the "ff" properties of a "ff"-related R object after the original "ff" output folder has been moved

[Shi, Tao]

Hi David,
Normally, I would have a R code example for this, but since I'm new to this too and just didn't have time to do that.  Hopefully, Jen's code illustrates the problem.
Tao
 


     On Thursday, June 25, 2015 8:53 PM, David Winsemius <dwinsemius at comcast.net> wrote:
   

 
On Jun 25, 2015, at 4:04 PM, Shi, Tao via R-help wrote:

> Hi all,
> 
> I'm new to "ff" package through the using Bioconductor package "crlmm".  Here is my problem:
> 
> I've created a few R objects (e.g. an CNSet) using crlmm based on my data and save them in a .RData file.  crlmm heavily uses ff package to store results on a local folder.  For certain reasons, I have moved the ff output folder to somewhere else.  Now when I go back to R, I can't open those CNSet, for example, anymore, as the file has a property still storing the old ff output folder path. 
> 
> My question is: is there a quick way to change these paths to the new one, so I don't have to re-run the own analysis.
> 

The way to approach this is to create a small example that illustrates teh problem. In many case all will becove clear, but if not then you will have something that you can then post ... IN R CODE ... that will let us (most of whom are not ff-urers) see the problem.

--
David Winsemius
Alameda, CA, USA


  
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