luan_sheng wrote: > > hai, I want to perform a simulation like this: > > Suppose that I have one population ,it's size is 500, is composed of x,y > and z. The probability of x, y and z is respectively is 0.3, 0.5, 0.2. I > wan to simulate a new same size population based ratio of x, y and z, how > can I get and assess the number of x, y and z. ?
PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html I guess you are looking for ?table, but your question is much too unspecific.... Uwe Ligges > luan > > Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, > Ministry of Agriculture ,Yellow Sea Fisheries Research Institute, Chinese > Academy of Fishery Sciences, Qingdao 266071,China > > __________________________________________________ > > 雅虎免费G邮箱-中国第一绝无垃圾邮件骚扰超大邮箱 > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html