Perhaps the use of as.character() like following might help? data.whole$Analyte.Values <- data.whole$as.character(analyte)
Junnila, Jouni wrote: > Hello all, > > I'm having a problem concerning choosing columns from a dataset in a > function. > > I'm writing a function for data input etc., which first reads the data, > and then does several data manipulation tasks. > The function can be then used, with just giving the path of the .txt > file where the data is being held. > > These datasets consists of over 20 different analytes. Though, > statistical analyses should be made seperately analyte by analyte. So > the function needs to be able to choose a certain analyte based on what > the user of the function gives as a parameter when calling the function. > The name of the analyte user gives, is the same as a name of a column in > the data set. > > The question is: how can I refer to the parameter which the user gives, > inside the function? I cannot give the name of the analyte directly > inside the function, as the same function should work for all the 20 > analytes. > I'm giving some code for clarification: > >> datainput <- function(data1,data2,data3,data4,data5,data6,analyte) >> { > ... > ##data1-data6 being the paths of the six datasets I want to combine and > analyte being the special analyte I want to analyze and which can be > found on each of the datasets as a columnname.## > ##Then:## > ... >> data.whole <- subset(data.whole, > select=c(Sample.Name,Analyte.Values,Day,Plate)) > > ##Is for choosing the columns needed for analysis. The "Analyte" should > now be the column of the analyte, the users is referring to when calling > the datainput-function. How to do it? ## > I've tried something like >> data.whole$Analyte.Values <- data.whole$analyte ##(Or in quotes > "analyte") > But this does not work. I've tried several other "tricks" also, but > cannot get it to work. Can someone help? > > Thanks in advance, > > Jouni > > ______________________________________________ > R-help@stat.math.ethz.ch 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@stat.math.ethz.ch 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.