> x=matrix(rnorm(20*30),20) > y=x[seq(1,20,by=2),seq(1,30,by=2)]
2006/4/12, zhijie zhang <[EMAIL PROTECTED]>: > Dear friends, > I have a (20*30) matrix,and want to get a subset of it like the following: > The original matrix: rows:1,2,3,....20; columns:1,2,3,....30 > I want to get my subset of The original matrix and delete others: > rows:1,3,5,7,...19; columns:1,3,5.....29 > > > -- > Kind Regards,Zhi Jie,Zhang ,PHDDepartment of EpidemiologySchool of Public > HealthFudan UniversityTel:86-21-54237149 > > [[alternative HTML version deleted]] > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- 黄荣贵 Deparment of Sociology Fudan University
______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
