But data.table creator Matt Dowle told me that it’s actually quite simple: Just think of it as a symbol representing “each group.” Let’s go through a couple of examples. I have a data set ...

For example, the category \(0 \textless m ... In grouped tables the exact number of minutes late cannot be found. As the data has been grouped, the exact data values are not known so only an ...

One such scenario arises while embedding a radio button inside the JSF dataTable tag ... column of the table should behave like a radio group (such as when one is selected, the others are unselected).

Inequalities are often used in grouped tables. For example, the category \(0 \textless m \leq 4\) means that \(m\) is larger than 0 but less than or equal to 4. If data is organised into groups ...