hi I install plm and pglm packages but I can not load no one of them. the massage of loading plm is
> library(plm) Loading required package: Formula and for pglm is > library(pglm) Loading required package: maxLik Loading required package: miscTools Please cite the 'maxLik' package as: Henningsen, Arne and Toomet, Ott (2011). maxLik: A package for maximum likelihood estimation in R. Computational Statistics 26(3), 443-458. DOI 10.1007/s00180-010-0217-1. If you have questions, suggestions, or comments regarding the 'maxLik' package, please use a forum or 'tracker' at maxLik's R-Forge site: https://r-forge.r-project.org/projects/maxlik/ can you help me? and also when i wanna Formula package there is no massage . for installing Formula massage is --- Please select a CRAN mirror for use in this session --- Warning: package ‘Formula’ is in use and will not be installed i used 3.1.3 and 3.2.4 ver *64 and 32 and my computer is 64 bit please help me [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.