R小白求问"letterCloud’ is not available (for R version 3.3.2)"

SHENHE16

这意思是说R 3.3.2 版本上不能用letterCloud？有什么解决办法没有？

> install.packages('letterCloud')
--- Please select a CRAN mirror for use in this session ---
Warning message:
package ‘letterCloud’ is not available (for R version 3.3.2)

hicxian

先更新R，再试一次安装就可以了