search for: afilenam

...orging my first arms with R and I am fighting with regexpr() as well as portability between unix and windoz. I need to extract barcodes from filenames (which are located between a double and single underscore) as well as the directory where the filename is residing. Here is the solution I came to: aFileName <- "/Users/marco/Desktop/diagnosticAnalysis/test/MA__251329410021_S01_A01.txt" t <- regexpr("__\\d*_",aFileName, perl=T) t.dir <- regexpr("^.*/", aFileName, perl=T) base.name <- substr(aFileName, t+2, t-2 + attr(t,"match.length")) base.dir <-...