Function compare 

pub fn compare(
    clip: &ClipMetrics,
    renders: &[ClipMetrics],
    rows: &[SpreadRow],
) -> Result<Vec<Comparison>, SpreadError>

Compares clip with each of renders on every clip output.

The difference is the median over the renders of the clip’s distance from one render. A clip of the same sound lies within the row’s limit with the coverage of tolerance_rank.

Errors

Returns SpreadError::SampleRate when the clip and the renders have different sample rates, SpreadError::Runs for no render and SpreadError::MissingRow for a clip output that rows lacks.