Distribution and correlation of scale pattern gene codes for cashmere

For the identification of cashmere,the statistical regularities of scale pattern genetic code under optical microscope are studied. These results show that fiber diameter is even and its coefficient of variation is smaller than that of other scale pattern gene codes. Among all scale pattern gene codes,the optimal fitting of scale rectangle factor follows normal distribution and that of all other shape parameters follow lognormal distribution with a correlation higher than 0. 99. Further comparisons show that among all scale pattern gene codes,the dispersion of relative shape parameters is smaller than that of absolute shape parameters. The dispersion in scale rectangle factor is smallest and largest in scale area. Scale looks more like a square or narrow rectangle.