为什么我的R加载不了fPortfolio包,错误如下。用了同学电脑里的R却可以。怎么回事?感谢大家帮助。
> install.packages('fportfolio')
Warning in install.packages :
package ‘fportfolio’ is not available (for R version 3.1.1)
> library(fportfolio)
Error in library(fportfolio) : there is no package called ‘fportfolio’