In this section, we will see how we can convert a typical long layout to a typical wide layout, and vice versa. To perform this conversion, we will use the built-in
reshape() function. This takes several arguments, but we will use the following arguments:
data: This argument specifies the dataset that we want to change the layout of.
direction: This argument specifies whether the data is long or wide. Note that, here, long and wide indicate the typical layout.
idvar: This argument specifies the
identificationvariable. It could be a
timevar: This argument specifies how many times the values of
idvarrepeat for each subject.
The following example converts the students' ...