[jacobvjk]

Closes #1010

Pathways end anywhere from 2030 to 2100 (the NGFS data runs to 2100), so benchmark plots had very different x-axes and were hard to compare. All benchmark plots, on the pathway page and the comparison page, now stop at 2050. Downloads still contain every year.

How

• New src/utils/plotYears.ts: MAX_PLOT_YEAR = 2050 and capToPlotYears(), which drops rows after 2050.
• PlotGrid (pathway page) and ComparisonPlots (comparison page) apply it where the rows come in, before anything else is worked out from them. That keeps everything consistent with what is drawn:
  • The comparison page's shared y-axis. It was computed from every row, so values from 2051–2100 would have stretched every compared chart's y-axis to values no longer shown.
  • Which panels appear. A series left with a single year after the cut is dropped, rather than drawn as one point.
  • The segment badges under each panel.

The download is unchanged, and says so

The download box summarises the file, e.g. "2020 → 2100", right below plots that now stop at 2050. When the plotted dataset runs past 2050, the box adds one line: "The plots on this page show years up to 2050. This download contains every year."

Checks

• npx vitest run: 1359 passing. New tests cover:
  • the cap itself;
  • charts receiving no year after 2050, on both pages;
  • the y-axis ignoring a 2060 peak;
  • a panel with only one year left being dropped;
  • the download note.
• npm run lint, npm run format:check: clean. tsc reports the same 203 errors as epic/v2 already does, none in the changed files.
• Not yet checked in a browser. On this PR's preview:
  • open an NGFS pathway's Timeseries tab: the plots end at 2050, and the download box shows the note;
  • compare an NGFS pathway with one ending at 2050: the x-axes match, and the y-axes fit the visible lines.

🤖 Generated with Claude Code

[github-actions]

Expected version change and release notes

🚨 WARNING: This PR is not expected to trigger a new version

To trigger a version bump, use at least one conventional commit message in this branch. See: https://www.conventionalcommits.org/en/v1.0.0/

[github-actions]

Azure Static Web Apps: Your stage site is ready! Visit it here: https://proud-glacier-0f640931e-1021.westus2.2.azurestaticapps.net

[Copilot]

🟡 Changes recommended

Comparison entries reduced to one year still affect shared y-axis bounds despite their charts being hidden.

1 open issue

• Exclude post-cap single-year entries from shared Y bounds · New

What changed in this PR

This PR addresses #1010 by limiting benchmark plot data to years through 2050 on pathway and comparison pages, while preserving complete downloads.

Changes:

• Adds shared year-filtering helpers and applies them before deriving plot content and axis bounds.
• Adds a download notice when the plotted dataset extends beyond 2050.
• Adds tests for filtering, panel visibility, comparison scaling, and the download notice.

File	Description
src/​utils/​plotYears.ts	Defines the year cap and filtering helpers.
src/​utils/​plotYears.test.ts	Tests filtering and detection of later years.
src/​pages/​PathwayDetailPage.tsx	Enables the notice for the plotted dataset’s download.
src/​components/​PlotGrid.tsx	Caps detail-page data before deriving panels.
src/​components/​PlotGrid.test.tsx	Tests capped chart data and single-year panel removal.
src/​components/​DownloadDataset.tsx	Explains that downloads retain every year.
src/​components/​DownloadDataset.test.tsx	Tests conditional download notice rendering.
src/​components/​ComparisonPlots.tsx	Caps comparison data before deriving chart state.
src/​components/​ComparisonPlots.test.tsx	Tests year filtering and exclusion of later peaks from bounds.

_{Review effort: Balanced}

[github-actions]

Expected version change and release notes

🚨 WARNING: This PR is not expected to trigger a new version

To trigger a version bump, use at least one conventional commit message in this branch. See: https://www.conventionalcommits.org/en/v1.0.0/

[github-actions]

Azure Static Web Apps: Your stage site is ready! Visit it here: https://proud-glacier-0f640931e-1021.westus2.2.azurestaticapps.net

[Copilot]

🟢 Approval recommended

The cutoff consistently precedes plot calculations, downloads remain unchanged, and the previously reported shared-axis issue is fixed with regression coverage.

No open issues 🎉

1 resolved since last review

• Exclude post-cap single-year entries from shared Y bounds

_{Review effort: Balanced}