# psychopy_ext.fmri.Analysis.ds2evds

`Analysis.``ds2evds`(ds, offset=2, dur=2)

  Converts a dataset to an event-related dataset.

  Args: | ds
  Kwargs: | offset (int, default: 2) How much labels should be shifted due to the hemodynamic lag. A good practice is to first plot data to see where the peaks are. Default is 2 as a typical TR is between 2 and 3 secs and the lag is around 6 seconds. dur (int, default: 2) How many timepoints per condition. You may want to use a couple because the peak response may occupy more than a single timepoint (thus the default is 2).