/创建直方图,最后一个参数是非零就是均等划分，零的话常数设定bin的取值范围 /* 维度，bin个数， 密集型， 取值范围 ，划分情况*/-/ Create histograms, the last parameter is nonzero is equally divided in the range of zero, then the constant setting bin /* dimension, bin number, intensive, ranging divid