The problem is highlighted yellow. Trying to run MSMS data file in XCMS. It worked well for the tutorial data and full scan data but did not work for MSMS data. Help please. Problem highlighted in yellow
What is the length of your mzdatafiles vector? What length do you think it should have? What do you think the 'pattern' argument for list.files() does?
This is very similar to your last question. You are getting an error message that is pretty clear if you read it, but you seem not to be doing so. Let me translate. R is saying 'file not found: NA'. Did you ask it to get a file called NA? R seems to think so. What do you get if you do mzdatafiles?