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, 09:17, 30 April 2020
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==Array.==
Returns a simple cross tabulation of two or more factors. By default computes a frequency table of the factors unless an array of values and an aggregation function are passed.
[[100,2,2],[101,4,5],[102,6,7]].crosstab()
[[100,2,2],[101,4,5],[102,6,7]].uncrosstab()
==See Also==
[[Array.accumulatewith() |accumulatewith]]
[[Array.across() |across]]