Currently in matlab to do on the water conservancy data clustering, data of water, water level and time, the data are discrete data, has been used Euclidean distance formula to achieve the initial clustering, but according to the requirements of the teacher to separate the four process through clustering in this picture, were rising, rising sharply, fell sharply and gently falling is a process, is there any bosses can give some ideas, the teacher said can use to coordinate transformation can be achieved,,,,