如何将摘要输出转换为数据框？

I have summarized a column of a data frame (call this DATA) that consists of IDs so I get the total number of each ID in the given column. I'd like to convert this to another data frame (call this TOTALNUM), so I have two columns. The first column is the ID itself and the second column is the total number of each ID. Is this possible?I have summarized a column of a data frame (cal