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Cameron DeCoster

PROFILE

Cameron Decoster

Over 15 months, contributed to plotly/plotly.js, plotly.py, and dash, delivering 108 features and 30 bug fixes focused on data visualization, geospatial accuracy, and developer experience. Built and refined geodata pipelines, enhanced legend and plotting controls, and modernized CI/CD workflows using JavaScript, Python, and Node.js. Improved map rendering fidelity, introduced interactive features, and stabilized dependency management across repositories. Applied rigorous code cleanup, schema updates, and documentation improvements to support maintainability and onboarding. Addressed security vulnerabilities, optimized performance, and expanded test coverage, resulting in more reliable releases and clearer visuals for end users across both JavaScript and Python environments.

Overall Statistics

Feature vs Bugs

78%Features

Repository Contributions

280Total
Bugs
30
Commits
280
Features
108
Lines of code
4,502,088
Activity Months15

Work History

April 2026

12 Commits • 5 Features

Apr 1, 2026

April 2026 monthly summary: Delivered across plotly.js, plotly.py, and dash with a focus on reliability, security, and user-facing interactivity. Key features delivered include: Geographical subunits accuracy fix in plotly.js to refine scope-based identifiers and ensure correct subunit construction (commits 72b5369dbe27c1a1f01249f4b8fe11fac377801d); Dependency stability and security improvements in plotly.js, updating topojson dependencies, addressing security advisories, and rebuilding the stackgl bundle across the project (commits b8d2fe7b3a4c83b46360172c56e5a9e53617fd96, 4ddeaa123d87fb38d38ba1b6c1a9e3f4439328e2, 08853d820bef0af1b76d782ef4df25389fdec3b5); Plotly.js upgrade to v3.5.0 in plotly.py introducing clickanywhere and hoveranywhere interactivity (commits d605d3e9978928d111b3e2b5a10c70810b44a10d, 1b7de492ead91eb28bfa3bd9208078ff453a1657); Facet_row support for px.imshow in plotly.py to enable facet-based comparisons (commit c771ad5c15d0b0773171d212d1b79836616076f1); Graph Component Display Notifications feature in plotly/dash allowing displayNotifier control within Graph config (commit cf19476f4c876662a8205a5756c5b63357971663).

March 2026

18 Commits • 7 Features

Mar 1, 2026

March 2026 monthly summary focusing on delivering infrastructure, compatibility, and user-visible enhancements across core Plotly repos (plotly.py, plotly.js, dash). The month emphasized robust CI/CD, deterministic dependency management, forward-looking NumPy compatibility, and modernized build systems, enabling faster releases and clearer data visualizations for end users. While no high-severity defects were reported, the changes reduce release risk and lay groundwork for upcoming features. Key business-value outcomes: - More reliable, reproducible builds and test matrices across Python and JavaScript libraries. - Clearer support and messaging for NumPy changes, minimizing user-facing regressions. - Enhanced geo-visual clarity and UI controls in plots, improving data storytelling. - Streamlined deployment pipelines and code quality practices for Dash and Plotly.js/Dash ecosystems.

February 2026

4 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for plotly/plotly.js focused on delivering reliable visuals, stabilizing baselines, and improving code quality. The work prioritized business value through accurate, consistent legends, stable visual baselines, and maintainable code.

January 2026

16 Commits • 5 Features

Jan 1, 2026

January 2026 monthly summary for Plotly developer work across plotly.py and plotly.js. Key features delivered and major fixes: - plotly.py: Enhanced BooleanValidator to accept arrays of booleans and refactored acceptance tests to improve readability and maintainability. Documented boolean properties in graph_objs for clearer API usage. Release readiness: 6.5.2 patch includes pie legend fixes and metadata updates. - plotly.js: Added support for dashed marker lines in scatter plots, applying dash styles to open markers, and aligned axis ranges and legend rendering to reflect dash styles; updated visual mock data colors. Marker defaults improvements to prevent coercion of certain properties and cleaner marker_defaults.js. Visual regression test maintenance: updated baseline images and test fixtures. Business value and impact: - Improved data validation reliability and developer/documentation clarity reduce support overhead and improve user trust. - Visual fidelity improvements across charts enhance user experience and storytelling, leading to better data interpretation and potential adoption gains. Technologies/skills demonstrated: - Python: validator enhancement, test refactoring, API documentation updates. - JavaScript/Plotly.js: dash style rendering, marker defaults, linting/formatting, baseline maintenance, visual testing. - Release management: versioning, patch notes, and release metadata handling.

December 2025

7 Commits • 4 Features

Dec 1, 2025

December 2025: Across plotly.js and plotly.py, delivered feature-rich visuals, stability improvements, and integration readiness that enhance business value and developer efficiency. Key features delivered: - Pie Chart: Per-Slice Legend and ShowLegend Configuration in plotly.js. - plotly.py: Improved issue reporting UX via updated GitHub issue templates; Jupyter integration readiness with new static support; dependency upgrades enabling enhanced visuals. Major bugs fixed: - plotly.js: Replaced deprecated String.substr with String.slice to align with modern JS and improve stability. - plotly.py: Color sequence fixes and enhanced Gantt validation; deterministic builds via lockfile maintenance. Overall impact and accomplishments: - Richer visuals, smoother notebook workflows, faster issue triage, and stronger release hygiene across JS and Python repos. Technologies/skills demonstrated: - JavaScript modernization, dependency/version management, cross-language integration (JS/Python), and UI/UX improvements.

November 2025

26 Commits • 7 Features

Nov 1, 2025

November 2025 monthly summary: Delivered across plotly.py, plotly.js, and dash with a strong focus on visualization quality, geographic accuracy, and dashboard stability. The work enables richer end-user insights, more reliable autosize behavior, and cleaner, more maintainable code paths for future features.

October 2025

29 Commits • 16 Features

Oct 1, 2025

2025-10 monthly summary for plotly.js: Delivered code quality improvements, build/CI readiness, and targeted performance gains that collectively reduce maintenance cost and accelerate release cycles.

September 2025

16 Commits • 1 Features

Sep 1, 2025

September 2025 monthly summary for plotly.js development focusing on reliability of interactive plots, geospatial data quality, and contributor workflow improvements. Delivered targeted stability fixes for Plotly.react event handling, enhancements to geodata processing with updated topojson maps, and comprehensive repository hygiene updates to streamline collaboration and triage. Overall, these efforts improved user experience for geospatial visualizations, reduced maintenance toil, and accelerated contributing with clearer templates and draftlogs.

August 2025

33 Commits • 17 Features

Aug 1, 2025

August 2025 performance summary focused on delivering business value through release readiness, security remediation, and cross-repo alignment. Key outcomes include preparation for the 3.1.0-rc.1 release in plotly.js, a major dependency upgrade to Plotly v6.3.0 across core repos, expanded testing coverage for bin number changes and draftlog workflows, and comprehensive documentation/schema updates to improve compatibility and reduce breaking changes across the ecosystem.

July 2025

66 Commits • 33 Features

Jul 1, 2025

July 2025 performance summary for plotly.js focused on geographic rendering fidelity, test reliability, and release readiness. Delivered antimeridian fixes and expanded geographic test coverage; integrated topojson support and adjusted for d3-geo compatibility; updated baseline imagery and test tooling (draftlog); streamlined CI workflows and package management; tightened code quality and mocks; and prepared release artifacts with version bumps and changelog/README updates. Result: improved correctness of maps across edge cases, faster CI feedback, easier distribution of topojson assets, and clearer release notes for stakeholders.

June 2025

7 Commits • 3 Features

Jun 1, 2025

June 2025 monthly summary for plotly.js: Focused on delivering key visualization enhancements, geospatial data accuracy improvements, and build stability to reduce maintenance risk and accelerate deployment of reliable features. The work drove visible business value through clearer plots, more accurate geodata rendering, and a more stable, reproducible CI/build process.

May 2025

10 Commits • 2 Features

May 1, 2025

May 2025 monthly summary for plotly.js development focusing on geospatial data accuracy, data integrity, and data-process improvements. This period delivered enhancements to boundary handling, multi-resolution layer generation, and data maintenance workflows that directly improve rendering quality and correctness across maps.

April 2025

12 Commits • 3 Features

Apr 1, 2025

April 2025 (plotly.js) focused on stabilizing geospatial data pipelines, streamlining TopoJSON asset delivery, and modernizing CI/CD and tests. Delivered key features for geodata processing and output management, migrated TopoJSON assets, adjusted filtering policies, and updated build/test tooling. The changes improve map accuracy, build reproducibility, and developer velocity, enabling more reliable dashboards and faster iteration for geospatial users.

March 2025

14 Commits • 1 Features

Mar 1, 2025

March 2025: Focused on delivering a robust geodata processing overhaul for plotly.js, enabling accurate regional map rendering and a streamlined build/deploy workflow. Implemented topojson integration and comprehensive config updates, expanding regional coverage and preparation for future geodata features. The work also included tooling improvements and code-quality enhancements to reduce build churn and improve maintainability.

February 2025

10 Commits • 3 Features

Feb 1, 2025

February 2025 monthly summary: Delivered features to improve legend configuration consistency, enhanced customization options, and performed comprehensive schema maintenance to reduce technical debt and improve developer experience. The work focused on business value through consistent UI behavior, easier customization for customers, and clearer data models in the plotting library.

Activity

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Quality Metrics

Correctness94.2%
Maintainability93.2%
Architecture90.8%
Performance90.2%
AI Usage20.8%

Skills & Technologies

Programming Languages

BashBinaryCSSGitHTMLJSONJavaScriptJavaScript (ES Modules)MJSMarkdown

Technical Skills

API DevelopmentAPI IntegrationAPI designBackend DevelopmentBrowser CompatibilityBug FixBug FixingBuild AutomationBuild ConfigurationBuild ProcessBuild ScriptingBuild ToolsCI/CDCSSChangelog Management

Repositories Contributed To

4 repos

Overview of all repositories you've contributed to across your timeline

plotly/plotly.js

Feb 2025 Apr 2026
15 Months active

Languages Used

JavaScriptMarkdownJSONMJSYAMLJavaScript (ES Modules)PythonBinary

Technical Skills

Data VisualizationDocumentationFront End DevelopmentFront-end DevelopmentJavaScriptSchema Definition

plotly/plotly.py

Aug 2025 Apr 2026
6 Months active

Languages Used

MarkdownPythonTOMLJSONJavaScriptYAML

Technical Skills

Dependency ManagementDocumentationVersion ControlJavaScriptPythonPython package development

plotly/dash

Nov 2025 Apr 2026
3 Months active

Languages Used

JavaScriptMarkdownPythonYAML

Technical Skills

Reactdocumentationfront end developmentCI/CDJavaScript DevelopmentLinting

plotly/graphing-library-docs

Aug 2025 Aug 2025
1 Month active

Languages Used

JSONJavaScriptPython

Technical Skills

Dependency ManagementDocumentationVersion Control