This question is related to my other question: http://biostar.stackexchange.com/questions/17403/how-can-i-get-the-retention-time-of-an-ms-ms-precursor-out-of-a-mzml-file-using-p).
I want to know where in an mzml file I can find the retention time of a spectrum. I have tried looking in the mzml file myself but have not found it. When opening an mzml file in TOPPView it shows the spectrums on a 2D plot with m/z as y-axis and retention time as x-axis, so it must be somewhere in the file. However, using ViM to search in the mzml file for a retention time as shown on TOPPView does not give any results.
From what or where in the mzml file does TOPPView get the retention times?