当我在R中开发一个函数时,点击“构建和重新加载”时会出现以下消息:
警告信息:
1: package ‘formattable’ was built under R version 3.4.1
2: package ‘ggplot2’ was built under R version 3.4.1
3: package ‘Amelia’ was built under R version 3.4.1
4: package ‘car’ was built under R version 3.4.1
5: package ‘pscl’ was built under R version 3.4.1
6: package ‘gplots’ was built under R version 3.4.1
7: package ‘ROCR’ was built under R version 3.4.1
8: package ‘caret’ was built under R version 3.4.1
9: package ‘roxygen2’ was built under R version 3.4.1
10: package ‘miniCRAN’ was built under R version 3.4.1
如何解决这个问题?