解决R3.5版本下install.packages("gplots") 时报错：ERROR: dependency 'caTools' is not available for package 'gplots'

R 3.5版本

问题：

install.packages("gplots") 时报错：ERROR: dependency 'caTools' is not available for package 'gplots'

解决办法：安装gplots依赖的'caTools' 

install.packages("caTools", type = "binary")后，

能正常安装gplots了：install.packages("gplots")

来源：https://www.jianshu.com/p/010b5c2445ff