locColSel=locCols[grep('(T|t)rack|ID|id',locCols)[1]]# index 1 at the end in case more matches; select 1st; matches TrackLabel, tracklabel, Track Label etc
locColSel=locCols[grep('(T|t)ime|Metadata_T',locCols)[1]]# index 1 at the end in case more matches; select 1st; matches RealTime, realtime, real time, etc.
locColSel=locCols[grep('objCyto_Intensity_MeanIntensity_imErkCor|(R|r)atio|(I|i)ntensity|y',locCols)[1]]# index 1 at the end in case more matches; select 1st
locColSel=locCols[grep('(R|r)atio|(I|i)ntensity|y|Meas',locCols)[1]]# index 1 at the end in case more matches; select 1st