Please I need help with DNA methylation analysis. I am new to this and I would be grateful to get some help. After running

baseDir <- system.file("extdata", package = "C:/Users/Desktop/epic/iDat") targets <- read.metharray.sheet(baseDir)

the return is

baseDir <- system.file("extdata", package = "C:/Users/Desktop/epic/iDat") targets <- read.metharray.sheet(baseDir) Error in read.metharray.sheet(baseDir) : 'base' does not exists

I have saved the file as a .csv, read some recommendations and applied them but the problem still persists.

Please your kind suggestions/ help will be much appreciated. Thank you

You are not downloading data from a package but from your own folder, so you only need baseDir = "C:/Users/Desktop/epic/iDat"