head

C<Data::Summarizers::RecordsSummary> package module has data record summary functions over
different data structures coercible to full-arrays.


use Data::Reshapers;
use Data::Summarizers::RecordSummary;


@tbl = get-titanic-dataset();
say to-pretty-table(RecordsSummary(@tbl));



use Stats;
use Data::Summarizers::Predicates;
use Data::Reshapers::Predicates;
use Data::Reshapers;

unit module Data::Summarizers::RecordsSummary;

#===========================================================
our proto NumericVectorSummary(|) is export {*}

#-----------------------------------------------------------
multi NumericVectorSummary(@vec where is-numeric-vector($_), Str :$missing-value = '(Any-Nan-Nil-or-Whatever)' --> List) {
    my @nvec = @vec.grep({ $_ ~~ Numeric and $_ ne NaN });

    if @nvec.elems == 0 {
        ()
    } else {
        my @qs = do if @nvec.elems == 1 {
            # This is a bug in Stats -- the function quartile should give this result.
            (@nvec[0] xx 3).Array
        } else {
            quartiles(@nvec);
        }

        my @res =
                (
                'Min' => @nvec.min,
                '1st-Qu' => @qs[0],
                'Mean' => mean(@nvec),
                'Median' => @qs[1],
                '3rd-Qu' => @qs[2],
                'Max' => @nvec.max);

        if @nvec.elems < @vec.elems {
            @res.append( $missing-value => (@vec.elems - @nvec.elems))
        }

        @res
    }
}

#===========================================================
our proto CategoricalVectorSummary(|) is export {*}

#-----------------------------------------------------------
multi CategoricalVectorSummary(@vec where is-categorical-vector($_),
                               UInt :$max-tallies = 7,
                               Str :$missing-value = '(Any-Nan-Nil-or-Whatever)' --> List) {

    my @r = @vec.grep({ $_ ~~ Str }).classify({ $_ }).map({ $_.key => $_.value.elems }).Array;

    @r = @r.sort({ - $_.value });

    my $whateverCounts = @vec.grep({ ($_ eqv Any) or $_.isa(Nil) or $_.isa(Whatever) }).elems;

    if @r.elems > $max-tallies {
        @r = @r[^$max-tallies].Array.append(('(Other)' => @r.[$max-tallies .. *- 1].map({ $_.value }).sum));
    }

    if $whateverCounts > 0 {
        @r = @r.append($missing-value => $whateverCounts)
    }

    @r
}

#===========================================================
our proto AtomicVectorSummary(|) is export {*}

#-----------------------------------------------------------
multi AtomicVectorSummary(@vec where is-atomic-vector($_),
                          UInt :$max-tallies = 7,
                          :$missing-value = '(Any-Nan-Nil-or-Whatever)' --> List) {
    return CategoricalVectorSummary( @vec.map({ ($_ ~~ Numeric) ?? $_.Str !! $_ }).Array, :$max-tallies, :$missing-value)
}

#===========================================================
our proto RecordsSummary(|) is export {*}

#-----------------------------------------------------------
multi RecordsSummary($dataRecords, UInt :$max-tallies = 7, :$missing-value = '(Any-Nan-Nil-or-Whatever)') {
    if is-numeric-vector($dataRecords) {
        NumericVectorSummary($dataRecords, :$missing-value)
    } elsif is-categorical-vector($dataRecords) {
        CategoricalVectorSummary($dataRecords, :$max-tallies, :$missing-value)
    } elsif has-homogeneous-hash-types($dataRecords) {
        transpose($dataRecords).map({ $_.key => RecordsSummary($_.value, :$max-tallies, :$missing-value) })
    } elsif has-homogeneous-array-types($dataRecords) {
        my $k = 0;
        transpose($dataRecords).map({ ($k++).Str => RecordsSummary($_.value, :$max-tallies, :$missing-value) })
    } elsif is-atomic-vector($dataRecords) {
        AtomicVectorSummary($dataRecords, :$max-tallies, :$missing-value)
    } elsif is-iterable-of-iterable($dataRecords) {
        my $recs = $dataRecords>>.Array.map({ (0...^$_.elems) Z=> $_ })>>.Hash;
        RecordsSummary($recs, :$max-tallies, :$missing-value);
    } else {
        note 'Do not know how to summarize the argument.';
        ()
    }
}

root

README-work

Summarizers

React

=begin React :component<HeaderCol> :id<menu> 
=para L<Documentation|/doc/introduction>
=para L<Modules| /mods>
=para L<Examples| file:../examples/index.podlite>
=para L<Download |file:../download/index.podlite>
=para L<About|file:../about/index.podlite>
=para 🔍 K<⌘K>/K<ctrl-K>
=end React


=begin React :component<HeaderCol> :id<footer>  
=begin nested :!nested
=item1 B<Language>
    =item2 L<Get started|file:../getting-started/getting-started.podlite>
    =item2 L<Why Raku?|/doc/language/faq#Why-should-I-learn-Raku-What's-so-great-about-it>
    =item2 L<Try Raku|https://glot.io/new/raku>
    =item2 L<Raku cheat sheet|https://github.com/Raku/mu/blob/master/docs/Perl6/Cheatsheet/cheatsheet.txt>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<Raku on Exercism|https://exercism.org/tracks/raku>
    =item2 L<Wikipedia|https://en.wikipedia.org/wiki/Raku_(programming_language)>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=begin nested :!nested

=item1 B<L<Documentation|/doc>>
    =item2 L<Getting started, Migration guides from other languages, & Tutorials | file:../doc/introduction.podlite>
    =item2 L<Language References|file:../doc/reference.podlite>
    =item2 L<Type Reference| file:../doc/types.podlite>
    =item2 L<Miscellaneous| file:../doc/miscellaneous.podlite>
    =item2 L<FAQs (Frequently Asked Questions)|/doc/language/faq>
    =item2 L<Community|/doc/language/community>
    =item2 L<The list of all documents|file:../doc/index.podlite>

=item1 B<Resources>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>

=end nested
=begin nested :!nested

=item1 B<Resoures>
    =item2 L<Download | file:../download/index.podlite>
    =item2 L<empty|#>
    =item2 L<empty|#>
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    =item2 L<empty|#>

=item1 B<Learning>
    =item2 L<The Raku Guide|https://raku.guide/>
    =item2 L<Wikibook |https://en.wikibooks.org/wiki/Raku_Programming>
    =item2 L<Books |https://perl6book.com/>
    =item2 L<Rosetta Code | https://www.raku.org/community/rosettacode>
    =item2 L<Learn Raku in Y minutes|https://learnxinyminutes.com/docs/raku/>
    =item2 L<Golfing |https://github.com/AlexDaniel/raku-golf-cheatsheet>
=end nested
=begin nested :!nested

=item1 B<Explore>
    =item2 L<Raku Blog Aggregator|https://planet.raku.org/>
    =item2 L<Rakudo Weekly|https://rakudoweekly.blog/>
    =item2 L<The Weekly Challenge |https://perlweeklychallenge.org/>
    =item2 L<Raku Advent Calendar|https://raku-advent.blog/>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>
    =item2 L<empty|#>

=end nested
=end React


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RecordsSummary

Data::Summarizers::RecordsSummary

Synopsis

Data::Summarizers v0.2.1

Authors

License

Dependencies

Test Dependencies

Provides

Documentation