arXiv:1808.06019cs.HC
Visualizing a Million Time Series with the Density Line Chart
Early discovery. Linked by one identifiable commenter. This paper is outside the main ranking; a mention is not an endorsement.
Abstract
Data analysts often need to work with multiple series of data---conventionally shown as line charts---at once. Few visual representations allow analysts to view many lines simultaneously without becoming overwhelming or cluttered. In this paper, we introduce the DenseLines technique to calculate a discrete density representation of time series. DenseLines normalizes time series by the arc length to compute accurate densities. The derived density visualization allows users both to see the aggregate trends of multiple series and to identify anomalous extrema.
The weight does depend on the derivative: https://arxiv.org/abs/1808.06019 (This is mentioned in the intro post for this library: https://observablehq.com/@twitter/density-plot-introduction?...)
yurivishView on HNParent context
This page was specifically created as a library example. Here's the full collection: https://observablehq.com/collection/@twitter/density If you're interested in the technique behind the plot you can read more about how that works in this paper: https://arxiv.org/abs/1808.06019
yurivishView on HNParent context