Can somebody me helfen? I am confused how to use R to test the data wether it is pawer law distribution or not . power.law.fit in R can be used to calculate alpha,but with my knowledge firstly xmin should be confirmed before testing the data.Aber how? And the data has some zero values, that means the smallest values of the data is zero, but xmin of pawer law distribution should not be zero. Thank you for your guidence. -- View this message in context: http://r.789695.n4.nabble.com/how-to-test-pawer-law-distribution-tp3244001p3244001.html Sent from the R help mailing list archive at Nabble.com. [[alternative HTML version deleted]]