Any measure in the data set is given a position (rank) using the rank function.
There are multiple methods offered by Tableau for ranking measures which include:
Rank: Aggregated measure and ranking order, which is optional having the default value, are the two inputs that the Tableau rank function receives.
Rank_dense: This also receives two inputs i.e. aggregated measure and ranking order. But this gives the same rank to the same values while also continuing to increase with the additional values.
Rank_modified: Similar values are given the same rank using the rank modified function.
Rank_unique: Each and every value is given a unique rank using the rank unique function.
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