Hello, I need help with some code. Basically, I have experiments results which I need to process.
I have 2 dataframes with 3 columns Df1 <- data.frame (Date, Cellline, Data) Df2 <- data.frame (Date, Cellline, Control) I want for the entire column Df1-Data to be subtracted by the corresponding Df2-Controls which Columns Date and Cellline coincide through some type of loop. So the structure is: Df1$Data <- Df1$Data – Df2$Control [when (Df1$Celline == Df2$Celline & Df1$Date == Df2$Date]) Each Control has several dozen Data values which are linked through Data and Celline. Of course, the data.frames are of different dimensions. I’ve tried several approaches and failed miserably. Any suggestions? Thank you in advance for any. -- View this message in context: http://r.789695.n4.nabble.com/Help-with-a-loop-search-function-tp4718273.html Sent from the datatable-help mailing list archive at Nabble.com. _______________________________________________ datatable-help mailing list [email protected] https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/datatable-help
