Patent ID: 7706993

Claim:
A peak position correcting method that is a preprocessing for carrying out a testing of whether properties of a product, a raw material, etc., are good or defective from a spectrum waveform pattern, the method comprising the steps of: setting a reference peak position in a single region including a spectrum waveform pattern, or setting reference peak positions in each of a plurality of regions obtained by dividing the spectrum waveform pattern in a horizontal axis direction; specifying a peak to be corrected as an object of correction in the single region or each of the plurality of regions; shifting the peak to be corrected to the reference peak position in the single region or in each of the plurality of regions; and using a computer, substantially proportionally expanding or contracting the spectrum waveform pattern positioned at both sides of the peak to be corrected in the horizontal axis direction, depending on the amount of the shifting, in the single region or in each of the plurality of regions.