coverage.py 文件源码

def lognormal(self,samples):
        """
        Sampling from a Log Normal distribution

        Parameters:
        m=mean
        s=sigma - standard deviation
        ------------------------------------------------------------------------
        - samples: number of values that will be returned.
        """
        mean=float(self.__params[0]*1.0)
        sigma=float(self.__params[1]*1.0)
        distro=lognorm(s=sigma,scale=np.exp(mean))
        f=distro.rvs(size=samples)
        return f