question about attaching data
Hi, Pancho, 1. Quote:
PLEASE do ... provide commented, minimal, self-contained, reproducible code.
2. Changes of variables of attached data frames are -- usually -- not permanent (i.e., "disappear" when the data frame is detached again). 3. The of use detach( dummy) is to detach the data frame named "dummy" from the search path, i.e., to take it out of the search path agin. 4. No one is going to stop you "from continuing this process ad infinitum" except yourself. ;-) HtH -- Gerrit
On Thu, 28 Mar 2013, Pancho Mulongeni wrote:
Hi I just would like to know, When I have a dataframe, like this one called 'dummy' And I attach it. Then I run my code. I then update the dataframe by making changes and I still call it 'dummy'. I run my code again. Now dummy is at position 1 and position 2 of the search path and if I run the code again, with another version of 'dummy' it updates and eventually my search path looks like this [1] ".GlobalEnv" "dummy" "dummy" [4] "dummy" "package:stats" "package:graphics" [7] "package:grDevices" "package:datasets" "package:rcom" [10] "package:rscproxy" "package:utils" "package:methods" [13] "RExcelEnv" "Autoloads" "package:base" I get the correct data, as the previous versions of dummy are 'masked from the search path'. What stops me from continuing this process ad infinitum? What's the use of detaching dummy using detach()? Thanks Pancho Mulongeni Research Assistant PharmAccess Foundation 1 Fouch? Street Windhoek West Windhoek Namibia ? Tel:?? +264 61 419 000 Fax:? +264 61 419 001/2 Mob: +264 81 4456 286
______________________________________________ R-help at r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.