Waveform data processing device and waveform data processing program

A non-transitory computer readable media recording a waveform data processing program operable on a computer capable of accessing a storage device for storing, together with data of an observed waveform, information on peaks existing on the observed waveform previously extracted based on the data of the observed waveform obtained with a sample measurement device, information on a starting point and an ending point of a peak cluster consisting of a plurality of peaks close to one another present on the observed waveform, and information on a position of each peak included in the peak cluster and a positive/negative direction of the each peak, the waveform data processing program causing the computer to function as:

• baseline determination means for determining, based on the data of the observed waveform and the information on the peak and the peak cluster stored in the storage device, a baseline of the peak cluster,
• wherein the baseline determination means determines, when two or more points of intersection are found between a line segment connecting the starting point and the ending point of the peak cluster and the observed waveform except for the starting point and the ending point of the line segment, and at least one of sections on the observed waveform of the peak cluster each lying between two adjoining points of intersection of the two or more points of intersection includes no positions corresponding to the position of each peak included in the peak cluster stored in the storage, that the line segment satisfies correction requirements;
• the baseline determination means determines, when the line segment does not satisfy the correction requirements, the line segment to be the baseline of the peak cluster;
• and
• the base line determination means determines, when the line segment satisfies the correction requirements, a shortest straight line or shortest line segments from the starting point of the peak cluster as a beginning point to the ending point of the peak cluster as a finishing point satisfying all following conditions, and determines the straight line or the line segments to be the baseline of the peak cluster:
• (1) in a section where positive peaks are contiguous, a baseline passes below the observed waveform, becoming a straight line or line segments convex downward;
• (2) in a section where negative peaks are contiguous, a baseline passes above the observed waveform, becoming a straight line or line segments convex upward;
• (3) in a section where positive and negative peaks are contiguous, a baseline may or may not intersect with the observed waveform.