Concatenate selected row from multiple subsetted data tables into 1 new data table
Hi,
...
I have a data set(as example, Big Class) that contains all the data. I subset the data by age and select first row of each
subsetted data table. Then, I subset it again so that I can do concatenation of the selected row data into new table.
I notice that there is additional data (unwanted data ) concatenated in the new table (highlighted in red rectangular).
I am not sure what is the problem o