?get
Sent from my iPhone On Dec 8, 2008, at 7:11, "tsunhin wong" <[EMAIL PROTECTED]> wrote:
Dear all, I'm a newbie in R. I have a 45x2x2x8 design. A dataframe stores the metadata of trials. And each trial has its own data file: I used "read.table" to import every trial into R as a dataframe (variable). Now I dynamically ask R to retrieve trials that fit certain selection criteria, so I use "subset", e.g. tmptrialinfo <- subset(trialinfo, (Subject==24 & Filename=="v2msa8")) The name of the dataframe / variable of an individual trial can be obtained using: paste("t",tmptrialinfo[1,2],tmptrialinfo[1,16],".gz",sep="") Then I get a string: "t24v2msa8.gz" which is of the exact same name of the dataframe / variable of that trial, which is: t24v2msa8.gz Can somebody tell me how can I change that string (obtained from "paste()" above) to be a usable / manipulable variable name, so that I can do something, such as: (1) tmptrial <- trialcompute(trialextract( paste("t",tmptrialinfo[1,2],tmptrialinfo[1,16],".gz",sep="") ,tmptrialinfo[1,32],secs,sdm),secs,binsize) instead of hardcoding: (2)tmptrial <- trialcompute( trialextract(t24v2msa8.gz,tmptrialinfo[1,32],secs,sdm),secs,binsize)Currently, 1) doesn't work... Thanks in advance for your help! Regards, John ______________________________________________ R-help@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.
______________________________________________ R-help@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.
