histogram ( seq -- hashtable )

Statistics ยป Computing histograms

Statistics ยป Computing histograms

Next: | histogram-by ( seq quot: ( x -- bin ) -- hashtable ) |

Vocabulary

math.statistics

Inputs

Outputs

Word description

Returns a hashtable where the keys are the elements of the sequence and the values are the number of times they appeared in that sequence.

Examples

Definition

math.statistics

Inputs

seq | a sequence |

Outputs

hashtable | a hashtable |

Word description

Returns a hashtable where the keys are the elements of the sequence and the values are the number of times they appeared in that sequence.

Examples

! Count the number of times an element appears in a sequence.
USING: prettyprint math.statistics ;
"aaabc" histogram .

H{ { 97 3 } { 98 1 } { 99 1 } }

H{ { 97 3 } { 98 1 } { 99 1 } }

Definition

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Factor 0.99 x86.64 (2190, heads/master-b44db33e34, Jan 31 2023 20:58:13)