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Merge storytold/gridcraft#2522: Charts: 100% Stacked Area draws each value as a share of its category's total

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# Conflicts:
#	ROADMAP.md
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aiongg
2026-10-25 02:54:23 +00:00
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commit 6194f8241d
20 changed files with 162 additions and 29 deletions
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docs/chart-parity.md
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# Chart parity
> **Last reviewed:** 2026-10-18 · **Last updated:** 2026-10-18 · **Change:** trivial (stale chart notes: stock/combo, treemap/sunburst, box and waterfall kinds survive XLSX round-trip; PRs #158 and #161 merged) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
> **Last reviewed:** 2026-10-18 · **Last updated:** 2026-10-24 · **Change:** minor (100% stacked area charts) · **Target:** Microsoft Excel (Microsoft 365), Excel for Mac 16.113.4
Excel's chart types and chart elements against GridCraft. Part of
[target-app-parity.md](target-app-parity.md). **Breadth ~50%, ready ~30%, 40–60 h** (estimated).
@@ -17,7 +17,7 @@ Sources: `crates/model/src/features.rs` (`ChartKind`, `Chart`, `Series`), `crate
| Bar | clustered, stacked, 100%, 3-D ×3 | 3 of 6 | no 3-D |
| Line | line, stacked, 100% stacked, with markers ×3, 3-D line | 3 of 7 (line, with markers, stacked) | no 100% stacked; smoothed lines landed (#62) |
| Pie | pie, 3-D pie, pie of pie, bar of pie, doughnut | 2 of 5 (pie, doughnut) | no exploded, pie of pie, bar of pie |
| Area | area, stacked, 100%, 3-D ×3 | 2 of 6 | no 100%, no 3-D |
| Area | area, stacked, 100%, 3-D ×3 | 3 of 6 | no 3-D; 100% stacked drawn as shares of each category's total and kept as `percentStacked` in XLSX |
| X Y (scatter) | markers, smooth lines (±markers), straight lines (±markers) | 2 of 5 | no smooth lines |
| Bubble | bubble, 3-D bubble | 1 of 2 | |
| Stock | high-low-close, open-high-low-close, volume-HLC, volume-OHLC | 1 kind | |
@@ -31,7 +31,7 @@ Sources: `crates/model/src/features.rs` (`ChartKind`, `Chart`, `Series`), `crate
| Waterfall, Funnel | 2 | 2 of 2 | |
| Filled map | 1 | 0 | needs geographic boundary data (licensing decision) |
| Combo | custom combinations, secondary axis | yes (line on secondary axis) | |
| **Total** | ~60 subtypes | **25 (~42%)** | usage-weighted breadth higher (~65%): column, bar, line, pie and scatter dominate |
| **Total** | ~60 subtypes | **26 (~43%)** | usage-weighted breadth higher (~65%): column, bar, line, pie and scatter dominate |
## Chart elements and formatting
@@ -90,6 +90,7 @@ are (#1686). Such series get no `numCache`/`strCache` on save (#1690).
| Date | Change | Summary |
|---|---|---|
| 2026-10-24 | minor | 100% Stacked Area: inserted from the ribbon and All Charts, drawn as shares of each category's total, read and written as `percentStacked` |
| 2026-10-18 | trivial | Stale notes: stock/combo, treemap/sunburst, box and waterfall kinds survive XLSX round-trip (PRs #158, #161) |
| 2026-10-16 | trivial | Series that refer to defined names (`[0]!Name`, `Sheet!Name`) resolve instead of showing `#NAME?`, and are saved qualified, as Excel needs (#1686) |
| 2026-10-16 | minor | Box & whisker quartiles default to exclusive, honor each series on draw and XLSX round-trip; `chart.set {quartiles}` changes the method (#1453) |