Railway steel rail measurement profile grouping method

The invention discloses a railway steel rail measurement profile grouping method, which belongs to the field of railway line engineering, and is characterized in that the deviation between a steel rail measurement profile and a reference profile is calculated, and the deviation is converted into a coding matrix according to the deviation grouping tolerance, that is, zero mean processing is performed on measurement profile data, and principal components of the measurement data are extracted for analysis; data in the calculation process is more concise and clear, and algorithm check and data analysis are more convenient; and furthermore, the automatic measurement profile grouping operation is realized by adopting a matrix transformation and matrix operation mode. According to the method, programming and automation are conveniently achieved, the problems that manual grouping is poor in stability and long in consumed time are effectively solved, and the grinding scheme design efficiency can be remarkably improved