bmech_NaNpartition(fld) parititons all channels based on NaNs. All channels are partitionned over the range of frames where all channels contain numbers ARGUMENTS fld ... folder to operate on NOTES - Algorithm search all channels for the last NaN at the start of the data and the first NaN at the end of the data. For the NaNs at the start, the largest index is retained as the start of the partition. For the NaNs at the end, the smallest index is retained as the end of the partition.