From 0bf2532eb1db55a2c7624114f7e6d8c702a1333c Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Wed, 10 Jun 2026 02:06:02 +0000 Subject: [PATCH 1/5] feat(muix): implement acf-pacf --- .../implementations/javascript/muix.tsx | 200 ++++++++++++++++++ 1 file changed, 200 insertions(+) create mode 100644 plots/acf-pacf/implementations/javascript/muix.tsx diff --git a/plots/acf-pacf/implementations/javascript/muix.tsx b/plots/acf-pacf/implementations/javascript/muix.tsx new file mode 100644 index 0000000000..4f117c6db3 --- /dev/null +++ b/plots/acf-pacf/implementations/javascript/muix.tsx @@ -0,0 +1,200 @@ +//# anyplot-orientation: landscape +// anyplot.ai +// acf-pacf: Autocorrelation and Partial Autocorrelation (ACF/PACF) Plot +// Library: MUI X Charts | React | Node 22 +// License: @mui/x-charts — MIT (community). Pro/Premium are out of scope. +// Quality: pending | Created: 2026-06-10 + +import { BarChart } from "@mui/x-charts/BarChart"; +import { ChartsReferenceLine } from "@mui/x-charts/ChartsReferenceLine"; + +const t = window.ANYPLOT_TOKENS; + +// --- Deterministic LCG RNG (seed = 42) --------------------------------------- +function lcgRng(seed) { + let s = seed >>> 0; + return () => { + s = (Math.imul(s, 1664525) + 1013904223) >>> 0; + return s / 4294967296; + }; +} + +function randn(rng) { + const u = Math.max(rng(), 1e-10); + return Math.sqrt(-2 * Math.log(u)) * Math.cos(2 * Math.PI * rng()); +} + +// --- AR(2) time series: x_t = 0.65·x_{t-1} + 0.15·x_{t-2} + ε_t ----------- +const rng = lcgRng(42); +const N = 300; +const ts = [0, randn(rng) * 0.5]; +for (let i = 2; i < N; i++) { + ts.push(0.65 * ts[i - 1] + 0.15 * ts[i - 2] + randn(rng)); +} + +// Centre and scale +const mu = ts.reduce((a, b) => a + b, 0) / N; +const cx = ts.map((x) => x - mu); +const c0 = cx.reduce((s, v) => s + v * v, 0) / N; + +// ACF at lag h +function acfAt(h) { + let s = 0; + for (let i = h; i < N; i++) s += cx[i] * cx[i - h]; + return s / (N * c0); +} + +const MAX_LAG = 30; +const rho = Array.from({ length: MAX_LAG + 1 }, (_, k) => acfAt(k)); + +// PACF via Durbin–Levinson recursion +function computePACF(rhoArr, maxLag) { + const pacf = [1, rhoArr[1]]; + let phi = [rhoArr[1]]; + for (let k = 2; k <= maxLag; k++) { + let num = rhoArr[k]; + let den = 1; + for (let j = 0; j < k - 1; j++) { + num -= phi[j] * rhoArr[k - 1 - j]; + den -= phi[j] * rhoArr[j + 1]; + } + const pkk = den !== 0 ? num / den : 0; + pacf.push(pkk); + const next = Array(k).fill(0); + next[k - 1] = pkk; + for (let j = 0; j < k - 1; j++) next[j] = phi[j] - pkk * phi[k - 2 - j]; + phi = next; + } + return pacf; +} + +const pacf = computePACF(rho, MAX_LAG); + +// 95% CI: ±1.96 / √N +const CI = 1.96 / Math.sqrt(N); + +const round4 = (v) => Math.round(v * 10000) / 10000; + +const acfLags = Array.from({ length: MAX_LAG + 1 }, (_, i) => String(i)); +const pacfLags = Array.from({ length: MAX_LAG }, (_, i) => String(i + 1)); +const acfData = rho.map(round4); +const pacfData = pacf.slice(1).map(round4); + +// --- Chart ------------------------------------------------------------------- +export default function Chart() { + const W = window.ANYPLOT_SIZE.width; + const H = window.ANYPLOT_SIZE.height; + + const TITLE_H = 54; + const PANEL_H = Math.floor((H - TITLE_H - 6) / 2); + + const barColor = t.palette[0]; // #009E73 — brand green + + const ciLineStyle = { + stroke: t.inkSoft, + strokeDasharray: "7 4", + strokeWidth: 1.5, + strokeOpacity: 0.85, + }; + + const zeroLineStyle = { + stroke: t.inkSoft, + strokeWidth: 0.7, + strokeOpacity: 0.45, + }; + + const tickStyle = { fontSize: 12, fill: t.inkSoft }; + const labelStyle = { fontSize: 14, fill: t.ink }; + + const xAxisBase = { + scaleType: "band" as const, + categoryGapRatio: 0.82, + tickLabelStyle: tickStyle, + }; + + const yAxisBase = { + min: -1.0, + max: 1.0, + tickMinStep: 0.25, + tickLabelStyle: tickStyle, + labelStyle, + }; + + return ( +
+ {/* Title */} +
+ AR(2) Process · acf-pacf · javascript · muix · anyplot.ai +
+ + {/* ACF panel */} +
+ + + + + +
+ + {/* PACF panel */} +
+ + + + + +
+
+ ); +} From 558bb981dad768cb79271aca2929528db1edf570 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Wed, 10 Jun 2026 02:06:14 +0000 Subject: [PATCH 2/5] chore(muix): add metadata for acf-pacf --- plots/acf-pacf/metadata/javascript/muix.yaml | 21 ++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 plots/acf-pacf/metadata/javascript/muix.yaml diff --git a/plots/acf-pacf/metadata/javascript/muix.yaml b/plots/acf-pacf/metadata/javascript/muix.yaml new file mode 100644 index 0000000000..bf80c529d5 --- /dev/null +++ b/plots/acf-pacf/metadata/javascript/muix.yaml @@ -0,0 +1,21 @@ +# Per-library metadata for muix implementation of acf-pacf +# Auto-generated by impl-generate.yml + +library: muix +language: javascript +specification_id: acf-pacf +created: '2026-06-10T02:06:14Z' +updated: '2026-06-10T02:06:14Z' +generated_by: claude-sonnet +workflow_run: 27247982010 +issue: 4663 +language_version: 22.22.3 +library_version: 7.29.1 +preview_url_light: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/javascript/muix/plot-light.png +preview_url_dark: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/javascript/muix/plot-dark.png +preview_html_light: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/javascript/muix/plot-light.html +preview_html_dark: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/javascript/muix/plot-dark.html +quality_score: null +review: + strengths: [] + weaknesses: [] From 22d98c831b1ece105ea597b1ff1d9b380664d0b9 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Wed, 10 Jun 2026 02:12:59 +0000 Subject: [PATCH 3/5] chore(muix): update quality score 84 and review feedback for acf-pacf --- .../implementations/javascript/muix.tsx | 4 + plots/acf-pacf/metadata/javascript/muix.yaml | 274 +++++++++++++++++- 2 files changed, 271 insertions(+), 7 deletions(-) diff --git a/plots/acf-pacf/implementations/javascript/muix.tsx b/plots/acf-pacf/implementations/javascript/muix.tsx index 4f117c6db3..aac52663fb 100644 --- a/plots/acf-pacf/implementations/javascript/muix.tsx +++ b/plots/acf-pacf/implementations/javascript/muix.tsx @@ -1,3 +1,7 @@ +// anyplot.ai +// acf-pacf: Autocorrelation and Partial Autocorrelation (ACF/PACF) Plot +// Library: muix 7.29.1 | JavaScript 22.22.3 +// Quality: 84/100 | Created: 2026-06-10 //# anyplot-orientation: landscape // anyplot.ai // acf-pacf: Autocorrelation and Partial Autocorrelation (ACF/PACF) Plot diff --git a/plots/acf-pacf/metadata/javascript/muix.yaml b/plots/acf-pacf/metadata/javascript/muix.yaml index bf80c529d5..126313562c 100644 --- a/plots/acf-pacf/metadata/javascript/muix.yaml +++ b/plots/acf-pacf/metadata/javascript/muix.yaml @@ -1,11 +1,8 @@ -# Per-library metadata for muix implementation of acf-pacf -# Auto-generated by impl-generate.yml - library: muix language: javascript specification_id: acf-pacf created: '2026-06-10T02:06:14Z' -updated: '2026-06-10T02:06:14Z' +updated: '2026-06-10T02:12:58Z' generated_by: claude-sonnet workflow_run: 27247982010 issue: 4663 @@ -15,7 +12,270 @@ preview_url_light: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/ preview_url_dark: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/javascript/muix/plot-dark.png preview_html_light: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/javascript/muix/plot-light.html preview_html_dark: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/javascript/muix/plot-dark.html -quality_score: null +quality_score: 84 review: - strengths: [] - weaknesses: [] + strengths: + - Correct mathematical implementation of ACF and PACF using the Durbin-Levinson + recursion with a deterministic LCG RNG — demonstrates real algorithmic depth for + a JavaScript implementation + - Proper use of ChartsReferenceLine for 95% CI bounds with well-styled dashed lines + (strokeDasharray, strokeOpacity) — idiomatic MUI X usage + - 'Both themes render correctly — brand green #009E73 bars on warm cream (#FAF8F1) + and near-black (#1A1A17) backgrounds, all text uses t.ink / t.inkSoft tokens for + adaptive chrome' + - 'Good data choice: AR(2) process clearly shows exponential ACF decay and PACF + cutoff after lag 2 — pedagogically illustrative of how ACF/PACF identify model + order' + - Legends correctly hidden, skipAnimation set, explicit font sizes on all elements + weaknesses: + - '"95% CI" label placed with labelAlign=''end'' on ChartsReferenceLine and only + 30px right margin — label text at ~40-50px native width is very tight against + the right canvas edge. Increase margin.right from 30 to 60-70px in the ACF panel, + or use labelAlign=''start'' to place label at left end of reference line.' + - Fixed y-axis range [-1.0, 1.0] wastes vertical space — ACF values stay above ~0.1 + and PACF values are mostly in [-0.1, 0.75]. Remove the explicit min/max on yAxis + to let MUI X auto-scale, or use tighter bounds like [-0.35, 1.05] to make data + bars more prominent. + - 'categoryGapRatio: 0.82 makes bars too thin — small correlation values (0.01–0.06) + produce barely-visible marks at higher lags. Reduce to 0.60-0.65 to improve readability + of small-but-significant values while retaining stem-like spacing.' + - Title fontsize 19px CSS is below the recommended 22px from muix.md (title ≈ 22 + px). Increase to 22px to better fill the canvas. + - MUI X default axis frame borders visible around plot area — remove or lighten + the axis border with slotProps.axisContent or sx overrides for a cleaner, more + minimal look appropriate for a statistical chart. + image_description: |- + Light render (plot-light.png): + Background: Warm off-white (#FAF8F1), correct anyplot light surface — not pure white + Chrome: Title "AR(2) Process · acf-pacf · javascript · muix · anyplot.ai" in dark ink, clearly readable at top center. Y-axis labels "ACF" (upper panel) and "PACF" (lower panel) rotated and readable. X-axis label "Lag" on bottom panel readable. Tick labels 0–30 along x-axis are small but legible. "95% CI" label at right edge of upper reference line is very tight against the canvas edge but appears readable. + Data: Brand green (#009E73) bars dominate for early lags in ACF (lag 0 = 1.0, then exponential decay). PACF shows clear cutoff after lag 2 (~0.70, ~0.07 for lag 1 and 2 respectively). Dashed confidence interval lines (t.inkSoft) visible in both panels. Zero reference line faintly visible. Small-value bars at high lags (lags 10+) are very thin due to 82% gap ratio. + Legibility verdict: PASS — all text readable against the warm off-white background. No light-on-light issues. + + Dark render (plot-dark.png): + Background: Warm near-black (#1A1A17), correct anyplot dark surface — not pure black + Chrome: Title in light cream text against dark background, clearly readable. Y-axis labels "ACF" and "PACF" in light ink, readable. X-axis label "Lag" and tick labels in light ink, readable. "95% CI" label at right edge readable. No dark-on-dark text issues — MUI X ThemeProvider correctly adapted all chrome to light text. + Data: Brand green (#009E73) bars identical to light render — same data pattern (exponential ACF decay, PACF cutoff after lag 2). Dashed CI lines visible against dark background. Data colors perfectly consistent between themes. + Legibility verdict: PASS — all text readable against the near-black background. Chrome correctly adapted to light-on-dark. + criteria_checklist: + visual_quality: + score: 26 + max: 30 + items: + - id: VQ-01 + name: Text Legibility + score: 6 + max: 8 + passed: true + comment: Font sizes explicitly set (title 19px, labels 14px, ticks 12px CSS). + All readable in both themes. Title slightly below recommended 22px CSS. + Tick density at 31 lags is managed well. + - id: VQ-02 + name: No Overlap + score: 6 + max: 6 + passed: true + comment: No overlapping text elements in either render. X-axis tick labels + 0–30 are spaced and readable. + - id: VQ-03 + name: Element Visibility + score: 5 + max: 6 + passed: true + comment: 'categoryGapRatio: 0.82 creates very thin bars. Small-value correlations + at high lags (0.01–0.05) are barely visible as thin lines. Early large-value + bars are clearly visible.' + - id: VQ-04 + name: Color Accessibility + score: 2 + max: 2 + passed: true + comment: Single brand green series, high contrast against both backgrounds. + CI lines in inkSoft provide adequate contrast. + - id: VQ-05 + name: Layout & Canvas + score: 3 + max: 4 + passed: true + comment: Two-panel layout well executed. However, fixed y-axis [-1.0, 1.0] + wastes vertical space — most data is in [-0.15, 1.0] for ACF and [-0.15, + 0.75] for PACF. '95% CI' label very tight at right canvas edge. + - id: VQ-06 + name: Axis Labels & Title + score: 2 + max: 2 + passed: true + comment: Y-axes labeled 'ACF' and 'PACF', x-axis labeled 'Lag'. Title includes + descriptive prefix 'AR(2) Process'. All appropriate for the chart type. + - id: VQ-07 + name: Palette Compliance + score: 2 + max: 2 + passed: true + comment: 'First (and only) series uses #009E73 (brand green) via t.palette[0]. + Background uses t.pageBg (warm off-white/near-black). Text uses t.ink/t.inkSoft. + Data colors identical across themes.' + design_excellence: + score: 13 + max: 20 + items: + - id: DE-01 + name: Aesthetic Sophistication + score: 5 + max: 8 + passed: true + comment: 'Thoughtful design: Imprint palette, dashed CI lines with opacity + styling, zero reference line, Roboto font family. Clearly above defaults. + Not FiveThirtyEight-level but solid professional appearance.' + - id: DE-02 + name: Visual Refinement + score: 4 + max: 6 + passed: true + comment: Legends hidden, CI reference lines styled with dasharray and opacity, + zero line thin and faint. MUI X default axis borders still visible around + plot area — could be further refined. + - id: DE-03 + name: Data Storytelling + score: 4 + max: 6 + passed: true + comment: AR(2) parameter choices (0.65, 0.15) clearly demonstrate exponential + ACF decay vs. PACF cutoff — the classic pattern for identifying AR model + order. Good pedagogical data storytelling. + spec_compliance: + score: 14 + max: 15 + items: + - id: SC-01 + name: Plot Type + score: 4 + max: 5 + passed: true + comment: Correct ACF/PACF dual-panel visualization. Spec calls for 'vertical + stem lines (not filled bars)' but MUI X community has no stem chart type. + Very high gap ratio (0.82) approximates stems with thin bars — reasonable + but not exact. + - id: SC-02 + name: Required Features + score: 4 + max: 4 + passed: true + comment: ACF top panel, PACF bottom panel, shared x-axis with 'Lag' label + on bottom, 95% CI dashed lines, lag 0 in ACF, PACF starts from lag 1, 30 + lags — all spec requirements met. + - id: SC-03 + name: Data Mapping + score: 3 + max: 3 + passed: true + comment: X-axis shows lag numbers, Y-axes show correlation values. ACF/PACF + values correctly computed via Durbin-Levinson. Data mapping is correct. + - id: SC-04 + name: Title & Legend + score: 3 + max: 3 + passed: true + comment: Title 'AR(2) Process · acf-pacf · javascript · muix · anyplot.ai' + follows the {Descriptive Title} · {spec-id} · {language} · {library} · anyplot.ai + format. Language 'javascript' is correct for muix. + data_quality: + score: 14 + max: 15 + items: + - id: DQ-01 + name: Feature Coverage + score: 6 + max: 6 + passed: true + comment: Shows ACF with exponential decay (characteristic of AR), PACF with + clear cutoff after lag 2 (characteristic of AR(2)), 95% CI bounds to identify + significant lags — all key ACF/PACF features demonstrated. + - id: DQ-02 + name: Realistic Context + score: 4 + max: 5 + passed: true + comment: AR(2) process is a standard time series model used in statistics/econometrics. + Plausible and neutral domain. Slightly abstract compared to a named real-world + dataset (e.g., monthly airline passengers). + - id: DQ-03 + name: Appropriate Scale + score: 4 + max: 4 + passed: true + comment: N=300 observations (within spec 100-500 range). 30 lags (within spec + 30-40 range). Correlation values in [-1, 1] — correct domain. AR(2) parameters + produce plausible real-world autocorrelation structure. + code_quality: + score: 9 + max: 10 + items: + - id: CQ-01 + name: KISS Structure + score: 2 + max: 3 + passed: true + comment: Multiple helper functions (lcgRng, randn, acfAt, computePACF) add + complexity but are necessary for the statistical computation in JavaScript. + Could potentially be simplified but acceptable. + - id: CQ-02 + name: Reproducibility + score: 2 + max: 2 + passed: true + comment: Deterministic LCG RNG with seed=42. All data computed deterministically. + No Math.random() or Date.now(). + - id: CQ-03 + name: Clean Imports + score: 2 + max: 2 + passed: true + comment: Only BarChart and ChartsReferenceLine imported — both used in the + component. + - id: CQ-04 + name: Code Elegance + score: 2 + max: 2 + passed: true + comment: Clean JSX structure, appropriate TypeScript type assertions, no over-engineering, + no fake UI elements. + - id: CQ-05 + name: Output & API + score: 1 + max: 1 + passed: true + comment: MUI X is an interactive library — harness saves plot-light.png/plot-dark.png + and plot-light.html/plot-dark.html. Current @mui/x-charts API used. skipAnimation + set as required. + library_mastery: + score: 8 + max: 10 + items: + - id: LM-01 + name: Idiomatic Usage + score: 5 + max: 5 + passed: true + comment: 'Expert MUI X usage: BarChart with series/xAxis/yAxis props, ChartsReferenceLine + inside chart children, slotProps.legend.hidden, skipAnimation, window.ANYPLOT_TOKENS + for theme-adaptive colors, window.ANYPLOT_SIZE for canvas sizing.' + - id: LM-02 + name: Distinctive Features + score: 3 + max: 5 + passed: true + comment: ChartsReferenceLine is a distinctive MUI X feature used effectively + for CI bounds. Custom flex layout for dual panels is clever. Could push + further with MUI X's axis customization (custom tick rendering, axis bands) + for more visual distinctiveness. + verdict: REJECTED +impl_tags: + dependencies: [] + techniques: + - subplots + patterns: + - data-generation + dataprep: + - time-series + styling: + - alpha-blending From 56c863bf0ae107ba7b6f698c695150edcf8965d8 Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Wed, 10 Jun 2026 02:17:31 +0000 Subject: [PATCH 4/5] fix(muix): address review feedback for acf-pacf Attempt 1/3 - fixes based on AI review --- .../implementations/javascript/muix.tsx | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) diff --git a/plots/acf-pacf/implementations/javascript/muix.tsx b/plots/acf-pacf/implementations/javascript/muix.tsx index aac52663fb..53289cc239 100644 --- a/plots/acf-pacf/implementations/javascript/muix.tsx +++ b/plots/acf-pacf/implementations/javascript/muix.tsx @@ -110,15 +110,17 @@ export default function Chart() { const tickStyle = { fontSize: 12, fill: t.inkSoft }; const labelStyle = { fontSize: 14, fill: t.ink }; + const axisLineSx = { + "& .MuiChartsAxis-line": { stroke: t.grid }, + }; + const xAxisBase = { scaleType: "band" as const, - categoryGapRatio: 0.82, + categoryGapRatio: 0.62, tickLabelStyle: tickStyle, }; const yAxisBase = { - min: -1.0, - max: 1.0, tickMinStep: 0.25, tickLabelStyle: tickStyle, labelStyle, @@ -142,7 +144,7 @@ export default function Chart() { display: "flex", alignItems: "center", justifyContent: "center", - fontSize: 19, + fontSize: 22, fontWeight: 600, color: t.ink, letterSpacing: 0.15, @@ -159,10 +161,11 @@ export default function Chart() { skipAnimation colors={[barColor]} xAxis={[{ ...xAxisBase, data: acfLags }]} - yAxis={[{ ...yAxisBase, label: "ACF" }]} + yAxis={[{ ...yAxisBase, label: "ACF", min: -0.35, max: 1.05 }]} series={[{ data: acfData, label: "ACF" }]} - margin={{ top: 20, bottom: 28, left: 80, right: 30 }} + margin={{ top: 20, bottom: 28, left: 80, right: 65 }} slotProps={{ legend: { hidden: true } }} + sx={axisLineSx} > From 4a10ce6ade45052a8fcbbf7ae769fee92960059b Mon Sep 17 00:00:00 2001 From: "github-actions[bot]" Date: Wed, 10 Jun 2026 02:25:19 +0000 Subject: [PATCH 5/5] chore(muix): update quality score 84 and review feedback for acf-pacf --- plots/acf-pacf/metadata/javascript/muix.yaml | 197 ++++++++----------- 1 file changed, 81 insertions(+), 116 deletions(-) diff --git a/plots/acf-pacf/metadata/javascript/muix.yaml b/plots/acf-pacf/metadata/javascript/muix.yaml index 126313562c..53c80039e2 100644 --- a/plots/acf-pacf/metadata/javascript/muix.yaml +++ b/plots/acf-pacf/metadata/javascript/muix.yaml @@ -2,7 +2,7 @@ library: muix language: javascript specification_id: acf-pacf created: '2026-06-10T02:06:14Z' -updated: '2026-06-10T02:12:58Z' +updated: '2026-06-10T02:25:19Z' generated_by: claude-sonnet workflow_run: 27247982010 issue: 4663 @@ -15,105 +15,88 @@ preview_html_dark: https://storage.googleapis.com/anyplot-images/plots/acf-pacf/ quality_score: 84 review: strengths: - - Correct mathematical implementation of ACF and PACF using the Durbin-Levinson - recursion with a deterministic LCG RNG — demonstrates real algorithmic depth for - a JavaScript implementation - - Proper use of ChartsReferenceLine for 95% CI bounds with well-styled dashed lines - (strokeDasharray, strokeOpacity) — idiomatic MUI X usage - - 'Both themes render correctly — brand green #009E73 bars on warm cream (#FAF8F1) - and near-black (#1A1A17) backgrounds, all text uses t.ink / t.inkSoft tokens for - adaptive chrome' - - 'Good data choice: AR(2) process clearly shows exponential ACF decay and PACF - cutoff after lag 2 — pedagogically illustrative of how ACF/PACF identify model - order' - - Legends correctly hidden, skipAnimation set, explicit font sizes on all elements + - 'Deterministic LCG RNG + Durbin-Levinson PACF recursion: rigorous, reproducible + time series analysis in pure browser JS' + - AR(2) data perfectly demonstrates the textbook ACF/PACF diagnostic pattern (exponential + decay vs. cutoff) + - Theme tokens correctly plumbed throughout (t.pageBg, t.ink, t.inkSoft, t.grid, + t.palette[0]) — seamless light/dark adaptation + - ChartsReferenceLine with proper dashed CI styling shows good MUI X-specific API + usage + - Clean dual-panel layout with thoughtful margins and bar gap ratio weaknesses: - - '"95% CI" label placed with labelAlign=''end'' on ChartsReferenceLine and only - 30px right margin — label text at ~40-50px native width is very tight against - the right canvas edge. Increase margin.right from 30 to 60-70px in the ACF panel, - or use labelAlign=''start'' to place label at left end of reference line.' - - Fixed y-axis range [-1.0, 1.0] wastes vertical space — ACF values stay above ~0.1 - and PACF values are mostly in [-0.1, 0.75]. Remove the explicit min/max on yAxis - to let MUI X auto-scale, or use tighter bounds like [-0.35, 1.05] to make data - bars more prominent. - - 'categoryGapRatio: 0.82 makes bars too thin — small correlation values (0.01–0.06) - produce barely-visible marks at higher lags. Reduce to 0.60-0.65 to improve readability - of small-but-significant values while retaining stem-like spacing.' - - Title fontsize 19px CSS is below the recommended 22px from muix.md (title ≈ 22 - px). Increase to 22px to better fill the canvas. - - MUI X default axis frame borders visible around plot area — remove or lighten - the axis border with slotProps.axisContent or sx overrides for a cleaner, more - minimal look appropriate for a statistical chart. + - Filled bars used instead of spec-required stem lines (vertical line from zero + + marker at tip); MUI X community lacks native stem chart + - ACF and PACF panels are two separate BarChart instances — x-axis ranges align + visually but axes are not truly shared + - PACF panel omits the 95% CI label present on the ACF panel — inconsistent documentation + of CI bounds + - 'DQ-02: context is abstract AR(2) without a real-world domain label — a domain + label would make it more concrete' image_description: |- Light render (plot-light.png): - Background: Warm off-white (#FAF8F1), correct anyplot light surface — not pure white - Chrome: Title "AR(2) Process · acf-pacf · javascript · muix · anyplot.ai" in dark ink, clearly readable at top center. Y-axis labels "ACF" (upper panel) and "PACF" (lower panel) rotated and readable. X-axis label "Lag" on bottom panel readable. Tick labels 0–30 along x-axis are small but legible. "95% CI" label at right edge of upper reference line is very tight against the canvas edge but appears readable. - Data: Brand green (#009E73) bars dominate for early lags in ACF (lag 0 = 1.0, then exponential decay). PACF shows clear cutoff after lag 2 (~0.70, ~0.07 for lag 1 and 2 respectively). Dashed confidence interval lines (t.inkSoft) visible in both panels. Zero reference line faintly visible. Small-value bars at high lags (lags 10+) are very thin due to 82% gap ratio. - Legibility verdict: PASS — all text readable against the warm off-white background. No light-on-light issues. + Background: Warm off-white (#FAF8F1) — correct theme surface + Chrome: Title "AR(2) Process · acf-pacf · javascript · muix · anyplot.ai" in dark text (~65% canvas width). Y-axis labels "ACF" and "PACF" readable. X-axis label "Lag" on PACF panel. Tick labels 0-30 and correlation values visible. "95% CI" label at right margin of ACF panel. + Data: Brand green (#009E73) bars for all series. 31 bars in ACF (lags 0-30), 30 bars in PACF (lags 1-30). Dashed CI reference lines at ±0.113. Zero baseline reference line. + Legibility verdict: PASS Dark render (plot-dark.png): - Background: Warm near-black (#1A1A17), correct anyplot dark surface — not pure black - Chrome: Title in light cream text against dark background, clearly readable. Y-axis labels "ACF" and "PACF" in light ink, readable. X-axis label "Lag" and tick labels in light ink, readable. "95% CI" label at right edge readable. No dark-on-dark text issues — MUI X ThemeProvider correctly adapted all chrome to light text. - Data: Brand green (#009E73) bars identical to light render — same data pattern (exponential ACF decay, PACF cutoff after lag 2). Dashed CI lines visible against dark background. Data colors perfectly consistent between themes. - Legibility verdict: PASS — all text readable against the near-black background. Chrome correctly adapted to light-on-dark. + Background: Near-black (#1A1A17) — correct dark theme surface + Chrome: Title in off-white/light text — clearly readable. All axis tick labels (0-30, -0.5 to 1.0), y-axis labels, and x-axis label are light-colored. Dashed CI reference lines visible against dark background. No dark-on-dark failures observed. + Data: Same brand green (#009E73) bars — identical colors to light render as required. Dashed CI reference lines and zero baseline visible. + Legibility verdict: PASS criteria_checklist: visual_quality: - score: 26 + score: 28 max: 30 items: - id: VQ-01 name: Text Legibility - score: 6 + score: 7 max: 8 passed: true - comment: Font sizes explicitly set (title 19px, labels 14px, ticks 12px CSS). - All readable in both themes. Title slightly below recommended 22px CSS. - Tick density at 31 lags is managed well. + comment: 'All font sizes explicitly set (tick: 12px, label: 14px, title: 22px + CSS). Readable in both themes. 31 x-axis ticks create mild density but labels + remain legible.' - id: VQ-02 name: No Overlap score: 6 max: 6 passed: true - comment: No overlapping text elements in either render. X-axis tick labels - 0–30 are spaced and readable. + comment: 'No overlapping elements. Bars well-spaced with categoryGapRatio: + 0.62.' - id: VQ-03 name: Element Visibility score: 5 max: 6 passed: true - comment: 'categoryGapRatio: 0.82 creates very thin bars. Small-value correlations - at high lags (0.01–0.05) are barely visible as thin lines. Early large-value - bars are clearly visible.' + comment: Bars clearly visible; near-zero bars at high lags are very small + but reflect the data. CI lines visible. - id: VQ-04 name: Color Accessibility score: 2 max: 2 passed: true - comment: Single brand green series, high contrast against both backgrounds. - CI lines in inkSoft provide adequate contrast. + comment: Single brand-green series on both surfaces; CVD-safe. - id: VQ-05 name: Layout & Canvas - score: 3 + score: 4 max: 4 passed: true - comment: Two-panel layout well executed. However, fixed y-axis [-1.0, 1.0] - wastes vertical space — most data is in [-0.15, 1.0] for ACF and [-0.15, - 0.75] for PACF. '95% CI' label very tight at right canvas edge. + comment: Two panels fill canvas well. No clipping. Good margins. - id: VQ-06 name: Axis Labels & Title score: 2 max: 2 passed: true - comment: Y-axes labeled 'ACF' and 'PACF', x-axis labeled 'Lag'. Title includes - descriptive prefix 'AR(2) Process'. All appropriate for the chart type. + comment: ACF, PACF, and Lag are descriptive; correlation values need no units. - id: VQ-07 name: Palette Compliance score: 2 max: 2 passed: true - comment: 'First (and only) series uses #009E73 (brand green) via t.palette[0]. - Background uses t.pageBg (warm off-white/near-black). Text uses t.ink/t.inkSoft. - Data colors identical across themes.' + comment: 'First series #009E73; background #FAF8F1 (light) / #1A1A17 (dark); + all chrome from ANYPLOT_TOKENS.' design_excellence: score: 13 max: 20 @@ -123,27 +106,24 @@ review: score: 5 max: 8 passed: true - comment: 'Thoughtful design: Imprint palette, dashed CI lines with opacity - styling, zero reference line, Roboto font family. Clearly above defaults. - Not FiveThirtyEight-level but solid professional appearance.' + comment: Clean dual-panel layout with intentional Imprint palette usage and + soft CI styling. Above default but not publication-grade. - id: DE-02 name: Visual Refinement score: 4 max: 6 passed: true - comment: Legends hidden, CI reference lines styled with dasharray and opacity, - zero line thin and faint. MUI X default axis borders still visible around - plot area — could be further refined. + comment: 'Deliberate refinements: axis lines styled with t.grid, bar gap ratio + tuned, CI reference lines with dashes and opacity.' - id: DE-03 name: Data Storytelling score: 4 max: 6 passed: true - comment: AR(2) parameter choices (0.65, 0.15) clearly demonstrate exponential - ACF decay vs. PACF cutoff — the classic pattern for identifying AR model - order. Good pedagogical data storytelling. + comment: 'AR(2) process is pedagogically ideal: ACF shows exponential decay, + PACF shows cutoff. Classic ARIMA diagnostic story.' spec_compliance: - score: 14 + score: 13 max: 15 items: - id: SC-01 @@ -151,33 +131,28 @@ review: score: 4 max: 5 passed: true - comment: Correct ACF/PACF dual-panel visualization. Spec calls for 'vertical - stem lines (not filled bars)' but MUI X community has no stem chart type. - Very high gap ratio (0.82) approximates stems with thin bars — reasonable - but not exact. + comment: Correct ACF/PACF in two stacked panels. Spec requires stem lines, + implementation uses filled bars (MUI X limitation). - id: SC-02 name: Required Features - score: 4 + score: 3 max: 4 passed: true - comment: ACF top panel, PACF bottom panel, shared x-axis with 'Lag' label - on bottom, 95% CI dashed lines, lag 0 in ACF, PACF starts from lag 1, 30 - lags — all spec requirements met. + comment: 95% CI dashed lines, lag 0 in ACF, PACF from lag 1, 30 lags, axis + labels all present. Loses 1 for bars not stems and non-shared x-axis. - id: SC-03 name: Data Mapping score: 3 max: 3 passed: true - comment: X-axis shows lag numbers, Y-axes show correlation values. ACF/PACF - values correctly computed via Durbin-Levinson. Data mapping is correct. + comment: Lag on x-axis, correlation on y-axis, correct range and scaling. - id: SC-04 name: Title & Legend score: 3 max: 3 passed: true - comment: Title 'AR(2) Process · acf-pacf · javascript · muix · anyplot.ai' - follows the {Descriptive Title} · {spec-id} · {language} · {library} · anyplot.ai - format. Language 'javascript' is correct for muix. + comment: Title follows {Descriptive Title} · {spec-id} · {language} · {library} + · anyplot.ai format. Legend correctly hidden. data_quality: score: 14 max: 15 @@ -187,25 +162,22 @@ review: score: 6 max: 6 passed: true - comment: Shows ACF with exponential decay (characteristic of AR), PACF with - clear cutoff after lag 2 (characteristic of AR(2)), 95% CI bounds to identify - significant lags — all key ACF/PACF features demonstrated. + comment: Lag-0 anchor at 1.0, exponential ACF decay, PACF cutoff after lag + 2, CI bounds. Excellent AR(2) demonstration. - id: DQ-02 name: Realistic Context score: 4 max: 5 passed: true - comment: AR(2) process is a standard time series model used in statistics/econometrics. - Plausible and neutral domain. Slightly abstract compared to a named real-world - dataset (e.g., monthly airline passengers). + comment: AR(2) is a standard context but lacks a specific real-world domain + label. - id: DQ-03 name: Appropriate Scale score: 4 max: 4 passed: true - comment: N=300 observations (within spec 100-500 range). 30 lags (within spec - 30-40 range). Correlation values in [-1, 1] — correct domain. AR(2) parameters - produce plausible real-world autocorrelation structure. + comment: ACF in [-1,1], CI at ±1.96/sqrt(300)=±0.113 mathematically correct, + PACF values realistic. code_quality: score: 9 max: 10 @@ -215,67 +187,60 @@ review: score: 2 max: 3 passed: true - comment: Multiple helper functions (lcgRng, randn, acfAt, computePACF) add - complexity but are necessary for the statistical computation in JavaScript. - Could potentially be simplified but acceptable. + comment: Multiple utility functions (lcgRng, randn, acfAt, computePACF) are + genuinely necessary for browser JS without seeded RNG. Technically above + KISS. - id: CQ-02 name: Reproducibility score: 2 max: 2 passed: true - comment: Deterministic LCG RNG with seed=42. All data computed deterministically. - No Math.random() or Date.now(). + comment: Deterministic LCG with seed 42. Fully reproducible. - id: CQ-03 name: Clean Imports score: 2 max: 2 passed: true - comment: Only BarChart and ChartsReferenceLine imported — both used in the - component. + comment: Only BarChart and ChartsReferenceLine imported, both used. - id: CQ-04 name: Code Elegance score: 2 max: 2 passed: true - comment: Clean JSX structure, appropriate TypeScript type assertions, no over-engineering, - no fake UI elements. + comment: Clean idiomatic React. Complexity justified by algorithm requirements. - id: CQ-05 name: Output & API score: 1 max: 1 passed: true - comment: MUI X is an interactive library — harness saves plot-light.png/plot-dark.png - and plot-light.html/plot-dark.html. Current @mui/x-charts API used. skipAnimation - set as required. + comment: Correct component export; harness produces plot-light.png + plot-dark.png + + HTML. library_mastery: - score: 8 + score: 7 max: 10 items: - id: LM-01 name: Idiomatic Usage - score: 5 + score: 4 max: 5 passed: true - comment: 'Expert MUI X usage: BarChart with series/xAxis/yAxis props, ChartsReferenceLine - inside chart children, slotProps.legend.hidden, skipAnimation, window.ANYPLOT_TOKENS - for theme-adaptive colors, window.ANYPLOT_SIZE for canvas sizing.' + comment: Correct BarChart with skipAnimation, ANYPLOT_SIZE sizing, slotProps.legend, + margin prop, categoryGapRatio. - id: LM-02 name: Distinctive Features score: 3 max: 5 passed: true - comment: ChartsReferenceLine is a distinctive MUI X feature used effectively - for CI bounds. Custom flex layout for dual panels is clever. Could push - further with MUI X's axis customization (custom tick rendering, axis bands) - for more visual distinctiveness. - verdict: REJECTED + comment: Uses ChartsReferenceLine (MUI X-specific), slotProps customization + API, sx prop targeting .MuiChartsAxis-line internal elements. + verdict: APPROVED impl_tags: dependencies: [] techniques: - subplots + - annotations + - html-export patterns: - data-generation - dataprep: - - time-series - styling: - - alpha-blending + dataprep: [] + styling: []