I would like to do a differential gene expression analysis on a microarray data using the simpleaffy package in R. I was following this particular tutorial for doing the analysis, as I am a newbie in this field. Unfortunately, for a particular dataset used for my study, .cel file is not available and only .txt file/ SOFT file is available for download. Can these files be analysed using the simpleaffy package? Or is there a way out how to proceed with the analysis? Any help in this would be greatly appreciated.