ANSI-Heatmap

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README.pod  view on Meta::CPAN

=over 4

=item min_x, max_x ( INT )

Specify the smallest and largest X-axis value to include. If not
provided, defaults to the smallest/largest values passed to C<set>
or C<inc>. Can be used to crop the map or ensure it keeps a fixed
size even if some values are unset.

To make automatic again, set to C<undef>.

=item min_y, max_y ( INT )

Ditto for the Y-axis.

=item min_z, max_z ( FLOAT )

Ditto for intensity; useful for keeping a fixed intensity across
multiple heatmaps.

lib/ANSI/Heatmap.pm  view on Meta::CPAN

    my $self = shift;
    if (@_) {
        my $sw = shift;
        @_ == 0 or croak "swatch: excess arguments";
        if (ref $sw) {
            ref $sw eq 'ARRAY' or croak "swatch: invalid argument, should be string or arrayref";
            @$sw > 0 or croak "swatch: swatch is empty";
            $self->{swatch} = $sw;
        }
        else {
            defined $sw or croak "swatch: swatch name is undefined";
            exists $SWATCHES{$sw} or croak "swatch: swatch '$sw' does not exist";
            $self->{swatch} = $SWATCHES{$sw};
        }
    }
    return $self->{swatch};
}

sub to_string {
    my $self = shift;
    return $self->render($self->data);

lib/ANSI/Heatmap.pm  view on Meta::CPAN

sub render {
    my ($self, $matrix) = @_;
    my $half = $self->half;

    my @s;
    for my $y (0..$#{$matrix}) {
        next if $half && $y % 2 == 1;

        for my $x (0..$#{$matrix->[$y]}) {
            my $top = $matrix->[$y][$x] || 0;
            my $bottom = $half ? ($y == $#{$matrix} ? undef : $matrix->[$y+1][$x] || 0)
                               : $top;

            my ($top_color, $bottom_color) = map {
                $self->_swatch_lookup($_)
            } grep { defined } ($top, $bottom);

            my $fg = sprintf "\e[38;5;%d%s", $top_color, 'm';
            my $bg = defined $bottom ? sprintf "\e[48;5;%d%s", $bottom_color, 'm'
                                     : '';

lib/ANSI/Heatmap.pm  view on Meta::CPAN

=over 4

=item min_x, max_x ( INT )

Specify the smallest and largest X-axis value to include. If not
provided, defaults to the smallest/largest values passed to C<set>
or C<inc>. Can be used to crop the map or ensure it keeps a fixed
size even if some values are unset.

To make automatic again, set to C<undef>.

=item min_y, max_y ( INT )

Ditto for the Y-axis.

=item min_z, max_z ( FLOAT )

Ditto for intensity; useful for keeping a fixed intensity across
multiple heatmaps.