Re: [Rd] loading multiple CSV files into a single data frame

From: oliver <>
Date: Thu, 03 May 2012 23:54:09 +0200

On Thu, May 03, 2012 at 11:40:42PM +0200, victor jimenez wrote:
> First of all, thank you for the answers. I did not know about zoo. However,
> it seems that none approach can do what I exactly want (please, correct me
> if I am wrong).
> Probably, it was not clear in my original question. The CSV files only
> contain the performance values. The other two columns (ASSOC and SIZE) are
> obtained from the existing values in the directory tree. So, in my opinion,
> none of the proposed solutions would work, unless every single "data.csv"
> file contained all the three columns (ASSOC, SIZE and PERF).

Maybe things will be clearer if you would provide an example with the tree and some example data, which you provide as a*.zip file.

As I undertand your question, you have a some variables' values stored in the csv-files, and other values of your variables are given as directory structure.

So you need to convert the structure of your directory into values fo your dataframe.

You need to have a dataframe that contains all possible values that are of interest to you.
Some of them are loaded via the csv-load and others are just picked from the directory structure.

You just have to fill in the data from the csv into the dataframe, and the values/variables that are implictly given via the directory structure, you just set when importing.

Maybe just read in the csv-files and add the missing values.

So if the variable on the cahcing mechanism is encode as part of the path to the file, e.g. "direct-mapped", then just set the chace value to "direct-mapped".



P.S.: In my understandiung this would be rather r-users instead of r-devel,

      because I think r-devel seems to be more focussed on internals and
      package stuff, while your problem is rather a user problem
      (any R user needs some kind of "programming" to get things done).

______________________________________________ mailing list Received on Thu 03 May 2012 - 21:55:52 GMT

This quarter's messages: by month, or sorted: [ by date ] [ by thread ] [ by subject ] [ by author ]

All messages

Archive maintained by Robert King, hosted by the discipline of statistics at the University of Newcastle, Australia.
Archive generated by hypermail 2.2.0, at Thu 03 May 2012 - 22:21:05 GMT.

Mailing list information is available at Please read the posting guide before posting to the list.

list of date sections of archive