private function drawIterations(IterationCollection $iterations)
{
$subject = $iterations->getSubject();
$this->output->write("[2K");
// clear the whole line
$this->output->write(PHP_EOL);
$this->output->write("[2K");
// clear the whole line
$this->output->write("[1A");
$sigma = 2;
$bins = 16;
if ($iterations->isComputed()) {
$times = $iterations->getZValues();
$stats = $iterations->getStats();
$freqs = Statistics::histogram($times, $bins, -$sigma, $sigma);
} else {
$stats = array('stdev' => 0, 'mean' => 0, 'max' => 0);
$freqs = array_fill(0, $bins + 1, null);
}
$this->output->write(sprintf('#%-2d (σ = %s ) -%sσ [', $subject->getIndex(), $this->timeUnit->format($stats['stdev']), $sigma));
$this->drawBlocks($freqs, $stats);
$this->output->write(sprintf('] +%sσ <comment>%s</comment>', $sigma, $iterations->isComputed() ? $this->formatIterationsShortSummary($iterations) : ''));
$this->output->write(PHP_EOL);
}
