Row ranks of a set of variables -------------------------------
^rowranks^ varlist, ^g^enerate^(^newvarlist^)^ [ ^l^owrank ^h^ighrank ^f^ie > ld ]
Description -----------
^rowranks^ creates new variables rank_1, ... , rank_p corresponding to var_1, ... , var_p in varlist such that each new variable, say rank_j, contains the ranks of the corresponding variable var_j within var_1, ... , var_p. varlist should contain all numeric variables.
By default, lowest values rank lowest and the rank created is the average rank, such that the sum of the ranks is preserved under ties.
For example, given
^x1^ ^x2^ ^x3^ ^x4^ ^x5^ -------------- 2 3 5 7 9 2 3 3 3 9 the ranks created are
1 2 3 4 5 1 3 3 3 5
Options -------
^generate(^newvarlist^)^ specifies new variable names for the variables to be generated, one for each variable in varlist. newvarlist may be specified in hyphenated form, as in ^y1-y5^. This option is required.
^lowrank^ specifies the use of "low ranks", 1 + (# < this value).
^highrank^ specifies the use of "high ranks", (# <= this value).
^field^ specifies that highest values rank lowest. The default is the "track" convention, lowest values rank lowest. With ^field^ the inequalities for ^lowrank^ and ^highrank^ are > and >= respectively.
Examples --------
. ^rowranks x1-x5, gen(y1-y5)^ . ^rowranks x1-x5, gen(y1-y5) lowrank^ . ^rowranks x1-x5, gen(y1-y5) highrank^
Author ------
Nicholas J. Cox, University of Durham, U.K. n.j.cox@@durham.ac.uk