SPC - Control Charts by Group in R
问题 I want to create a statistical process control chart for each Name in this dataframe and extract the rows that are out of control for each individual Name. Below is the dataframe: DATE <- as.Date(c('2016-06-18', '2016-06-19', '2016-06-20', '2016-06-21', '2016-06-22', '2016-06-23', '2016-06-24', '2016-06-25', '2016-06-26', '2016-06-27', '2016-06-28', '2016-06-29', '2016-06-30', '2016-06-18', '2016-06-19', '2016-06-20', '2016-06-21', '2016-06-22', '2016-06-23', '2016-06-24', '2016-06-25', '2016