Autodesk/hubble

Overlapping data series are not rendered nicely

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#33 opened on Oct 30, 2017

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Description

When selecting just two dataseries in the charts, everything looks rather good:

screenshot from 2017-10-30 17-19-09

However, when adding more data series, the colors are mixed awkwardly, making it hard to distinguish them:

screenshot from 2017-10-30 17-19-22

This is due to the use of transparency in the fill colors. Perhaps, we should look at Chart.js’s area charts, which seem to handle color transparency much more nicely:

screenshot from 2017-10-30 17-27-41

In the worst case, we should consider removing the fill colors entirely, as legibility of the charts should be top priority.

Contributor guide

Research direction
Investigate the use of transparency in fill colors for chart data series. Consider adopting Chart.js's approach for area charts or removing fill colors for better legibility.
Tech stack
pythonjavascript
Domain
frontenddata visualization
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
PythonJavaScriptChart.js
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70