SPrail                  2,000 Spanish train trips
Scorecard               Earnings and Loan Repayment in US Four-Year
                        Colleges
as_pibble               Coerce to a pibble panel data set object
fixed_check             Check for inconsistency in variables that
                        should be fixed
fixed_force             Enforce consistency in variables
id_variable             Create a single panel ID variable out of
                        several
inexact_join            Join two data frames inexactly
is_pibble               Check whether an object has been declared as
                        panel data
join.tbl_pb             Join two pibbles together
mode_order              Calculate the mode, and use original order to
                        break ties
mutate_cascade          Perform mutate one time period at a time
                        ('Cascading mutate')
mutate_subset           Propagate a calculation performed on a subset
                        of data to the rest of the data
panel_calculations      Perform standard panel-data calculations
panel_convert           Convert between panel data types
panel_fill              Fill in gaps in panel data
panel_locf              Fill in missing (or other) values of a panel
                        data set using known data
pibble                  Create a pibble panel data set object
pibble_methods          pibble methods
pmdplyr                 'pmdplyr' package
safe_join               Join two data frames safely
setops                  Set operations
time_variable           Create a single integer time period index
                        variable
tlag                    Time-lag a variable
