paper-figure

name	paper-figure
description	Generate publication-quality figures and tables from experiment results. Use when user says "plot this", "make a figure", "generate figures", "paper figures", or needs plots for a paper. Also invoked by `/auto`'s Ledger Figures hook to produce per-claim figures embedded into `CLAIMS_LEDGER.md`.
argument-hint	["figure-plan-or-data-path | mode:auto-ledger ..."]
allowed-tools	Bash(*), Read, Write, Edit, Grep, Glob, Agent, mcp__llm-chat__chat

Paper Figure: Publication-Quality Plots from Experiment Data

Generate all figures and tables for a paper based on: $ARGUMENTS

This skill has two calling modes, sharing the same plotting machinery:

• Standalone paper mode (default): driven by PAPER_PLAN.md from /paper-plan. Produces vector PDFs in figures/ plus latex_includes.tex for paper-write.
• Auto-ledger mode (mode: auto-ledger): driven by an inline plan supplied by /auto's Ledger Figures hook. Image figures produce PDF (vector, for later paper use) and PNG (raster, for Markdown embed); table figures produce .md (inline-renderable for the ledger) and .tex (publication-grade) — all under figures/<claim_id>/, plus a machine-readable INDEX.json per claim. Tables are first-class artifacts in this mode, on equal footing with charts. See "Auto-ledger invocation contract" below.

Scope: What This Skill Can and Cannot Do

Category	Can auto-generate?	Examples
Data-driven plots	✅ Yes	Line plots (training curves), bar charts (method comparison), scatter plots, heatmaps, box/violin plots
Comparison tables	✅ Yes	LaTeX tables comparing prior bounds, method features, ablation results
Multi-panel figures	✅ Yes	Subfigure grids combining multiple plots (e.g., 3×3 dataset × method)
Architecture/pipeline diagrams	❌ No — manual	Model architecture, data flow diagrams, system overviews. At best can generate a rough TikZ skeleton, but expect to draw these yourself using tools like draw.io, Figma, or TikZ
Generated image grids	❌ No — manual	Grids of generated samples (e.g., GAN/diffusion outputs). These come from running your model, not from this skill
Photographs / screenshots	❌ No — manual	Real-world images, UI screenshots, qualitative examples

In practice: For a typical ML paper, this skill handles ~60% of figures (all data plots + tables). The remaining ~40% (hero figure, architecture diagram, qualitative results) need to be created manually and placed in figures/ before running /paper-write. The skill will detect these as "existing figures" and preserve them.

Constants

• STYLE = publication — Visual style preset. Options: publication (default, clean for print), poster (larger fonts), slide (bold colors)
• DPI = 300 — Output resolution
• FORMAT = pdf — Output format in standalone mode. Options: pdf (vector, best for LaTeX), png (raster fallback). In auto-ledger mode the formats are chosen per figure by type: image types (line / bar / ...) write pdf + png; the table type writes md + tex. The caller passes the union (formats: pdf,png,md,tex) — each figure-script then picks the subset that matches its type.
• COLOR_PALETTE = tab10 — Default matplotlib color cycle. Options: tab10, Set2, colorblind (deuteranopia-safe)
• FONT_SIZE = 10 — Base font size (matches typical conference body text)
• FIG_DIR = figures/ — Default output directory in standalone mode. In auto-ledger mode this is overridden by the caller-supplied output_dir (typically figures/<claim_id>/).
• REVIEWER_MODEL = $LLM_MODEL — Model used via llm-chat MCP for figure quality review. Skipped when review: false is passed (default in auto-ledger mode to keep ledger renders cheap).

Inputs

1. PAPER_PLAN.md — figure plan table (from /paper-plan). Used in standalone mode.
2. plan_inline — an inline figure plan passed via $ARGUMENTS (auto-ledger mode). Replaces PAPER_PLAN.md when present; same schema as the PAPER_PLAN.md figure table.
3. Experiment data — JSON files, CSV files, or screen logs in figures/, runs/<run-id>/, verify/, or project root.
4. Existing figures — any manually created figures to preserve.

Resolution order at Step 1: plan_inline > PAPER_PLAN.md > scan-and-ask. The third branch is unreachable in auto-ledger mode — if neither inline plan nor PAPER_PLAN.md is present, return status: no-plan instead of prompting (the caller decides what to do).

Auto-ledger invocation contract

When /auto's Ledger Figures hook calls this skill, the orchestrator passes a YAML-shaped payload in $ARGUMENTS:

mode: auto-ledger
project_root: <abs path>          # cwd for all relative paths
claims:                            # one or more claims, batched in a single call
  - claim_id: C1
    claim_title: "<short statement>"
    output_dir: figures/C1/
    plan_inline:
      - id: c1_robustness          # filename stem; image types produce <id>.pdf + <id>.png
        type: bar                  # one of {line, bar, grouped_bar, scatter, heatmap, box, violin, multi_panel, table}
        data: verify/C1_<short>/ROBUSTNESS.md
        caption: "Robustness of C1 across method/dataset/model swaps."
        x: variant
        y: metric_value
        group: axis                # optional; for grouped_bar
      - id: c1_training_curves
        type: line
        data: runs/<run-id>/metrics.json
        caption: "Training dynamics for C1's main-experiment run."
        x: step
        y: [train_loss, val_loss]
      -         
         
         
         
         [, , , , , , , ]
             
                       
 

Per-claim outputs (auto-ledger mode):

figures/<claim_id>/
├── paper_plot_style.py            # shared style config (one copy per claim dir is fine; small file)
├── gen_<id>.py                    # per-figure generator script (image OR table)
├── <id>.pdf                       # image figures: vector for paper-write
├── <id>.png                       # image figures: raster for Markdown embed
├── <id>.md                        # table figures: inline-renderable for the ledger
├── <id>.tex                       # table figures: publication-grade LaTeX
└── INDEX.json                     # machine-readable summary (see schema below)

Image types write .pdf + .png and skip .md / .tex; the table type writes .md + .tex and skips .pdf / .png. The per-figure generator script chooses the format pair based on type.

INDEX.json schema:

{
  "claim_id": "C1",
  "claim_title": "<short>",
  "generated_at": "<iso-8601>",
  "figures": [
    {
      "id": "c1_robustness",
      "type": "bar",
      "caption": "Robustness of C1 across method/dataset/model swaps.",
      "png": "figures/C1/c1_robustness.png",
      "pdf": "figures/C1/c1_robustness.pdf",
      "md":  null,
      "tex": null,
      "source_data": "verify/C1_<short>/ROBUSTNESS.md",
      "status": "ok"
    },
    {
       
       
       
       
       
        
       
       
       
    
  
   
       
  

Every figure entry carries all four artifact slots — png, pdf, md, tex — with the unused pair set to null. status is ok on successful render or error with an error_detail field if the figure-generator script raised. Skipped entries (data file missing, plan entry of unsupported type, etc.) live in the skipped array — the script never raises for skip cases. INDEX.json is the only contract the caller relies on; the orchestrator parses it to populate claims_ledger.json[claim].figures[].

Return value (auto-ledger mode): a one-line summary per claim — "C1: 2/3 figures generated, 1 skipped (data missing)" — plus the absolute path of each INDEX.json written. No LaTeX include snippets are produced in this mode.

Workflow

Step 1: Read Figure Plan

Resolve the plan source in this order:

1. Auto-ledger mode (mode: auto-ledger in $ARGUMENTS): use the inline plan_inline from each claim entry. PAPER_PLAN.md is ignored even if it exists.

2. Standalone mode, PAPER_PLAN.md present: parse the Figure Plan table:

   | ID | Type | Description | Data Source | Priority |
   |----|------|-------------|-------------|----------|
   | Fig 1 | Architecture | ... | manual | HIGH |
   | Fig 2 | Line plot | ... | figures/exp.json | HIGH |
   

3. Standalone mode, no PAPER_PLAN.md: scan for data files in figures/, runs/, project root, and ask the user which figures to generate.

4. Auto-ledger mode with neither: return status: no-plan (do not prompt — the orchestrator is non-interactive).

For each entry, classify:

• Auto-generatable from data
• Needs manual creation (architecture diagrams, etc.) — flagged [MANUAL], skipped here
• Comparison table — generated as LaTeX in standalone mode; as both Markdown (.md, for inline ledger embed) and LaTeX (.tex, for paper-write) in auto-ledger mode. Treated the same as any other figure type in both modes — no opt-in required.

Step 2: Set Up Plotting Environment

Create a shared style configuration script in the active output dir (project root figures/ for standalone, figures/<claim_id>/ for auto-ledger):

# paper_plot_style.py — shared across all figure scripts in this dir
import matplotlib.pyplot as plt
import matplotlib
matplotlib.rcParams.update({
    'font.size': FONT_SIZE,
    'font.family': 'serif',
    'font.serif': ['Times New Roman', 'Times', 'DejaVu Serif'],
    'axes.labelsize': FONT_SIZE,
    'axes.titlesize': FONT_SIZE + 1,
    'xtick.labelsize': FONT_SIZE - 1,
    'ytick.labelsize': FONT_SIZE - 1,
    'legend.fontsize': FONT_SIZE - 1,
    'figure.dpi': DPI,
    'savefig.dpi': DPI,
    'savefig.bbox': 'tight',
    'savefig.pad_inches': 0.05,
    'axes.grid': False,
    'axes.spines.top': False,
    'axes.spines.right': False,
    'text.usetex': False,  # set True if LaTeX is available
    'mathtext.fontset': 'stix',
})

# Color palette
COLORS = plt.cm.tab10.colors  # or Set2, or colorblind-safe

def save_fig(fig, name, formats=('pdf',), out_dir=FIG_DIR):
    """Save figure under out_dir for every format in `formats`."""
    paths = []
    for fmt  formats:
        path = 
        fig.savefig(path)
        paths.append(path)
        ()
     paths

In auto-ledger mode formats=('pdf', 'png') so each call writes both files; the PNG is what the ledger Markdown will reference.

Step 3: Auto-Select Figure Type

Use this decision tree for data-driven figures (inspired by Imbad0202/academic-research-skills):

Data Pattern	Recommended Type	Size
X=time/steps, Y=metric	Line plot	0.48\textwidth
Methods × 1 metric	Bar chart	0.48\textwidth
Methods × multiple metrics	Grouped bar / radar	0.95\textwidth
Two continuous variables	Scatter plot	0.48\textwidth
Matrix / grid values	Heatmap	0.48\textwidth
Distribution comparison	Box/violin plot	0.48\textwidth
Multi-dataset results	Multi-panel (subfigure)	0.95\textwidth
Prior work comparison	LaTeX table	—

When the plan entry's type is already set (always the case in auto-ledger mode), use it directly without re-classifying.

Step 4: Generate Each Figure

For each figure in the plan, create a standalone Python script:

Line plots (training curves, scaling):

# gen_fig2_training_curves.py
from paper_plot_style import *
import json

with open('figures/exp_results.json') as f:
    data = json.load(f)

fig, ax = plt.subplots(1, 1, figsize=(5, 3.5))
ax.plot(data['steps'], data['fac_loss'], label='Factorized', color=COLORS[0])
ax.plot(data['steps'], data['crf_loss'], label='CRF-LR', color=COLORS[1])
ax.set_xlabel('Training Steps')
ax.set_ylabel('Cross-Entropy Loss')
ax.legend(frameon=False)
save_fig(fig, 'fig2_training_curves', formats=FORMATS, out_dir=OUT_DIR)

Bar charts (comparison, ablation):

fig, ax = plt.subplots(1, 1, figsize=(5, 3))
methods = ['Baseline', 'Method A', 'Method B', 'Ours']
values = [82.3, 85.1, 86.7, 89.2]
bars = ax.bar(methods, values, color=[COLORS[i] for i in range(len(methods))])
ax.set_ylabel('Accuracy (%)')
# Add value labels on bars
for bar, val in zip(bars, values):
    ax.text(bar.get_x() + bar.get_width()/2, bar.get_height() + 0.3,
            f'{val:.1f}', ha='center', va='bottom', fontsize=FONT_SIZE-1)
save_fig(fig, 'fig3_comparison', formats=FORMATS, out_dir=OUT_DIR)

Comparison tables (standalone — LaTeX only):

\begin{table}[t]
\centering
\caption{Comparison of estimation error bounds. $n$: sample size, $D$: ambient dim, $d$: latent dim, $K$: subspaces, $n_k$: modes.}
\label{tab:bounds}
\begin{tabular}{lccc}
\toprule
Method & Rate & Depends on $D$? & Multi-modal? \\
\midrule
\citet{MinimaxOkoAS23} & $n^{-s'/D}$ & Yes (curse) & No \\
\citet{ScoreMatchingdistributionrecovery} & $n^{-2/d}$ & No & No \\
\textbf{Ours} & $\sqrt{\sum n_k d_k / n}$ & No & Yes \\
\bottomrule
\end{tabular}
\end{table}

Comparison tables (auto-ledger — both .md and .tex):

# gen_c1_k_sensitivity.py
import json, os
from textwrap import dedent

with open('runs/<run-id>/k_sweep.json') as f:
    rows = json.load(f)['sweep']  # {K: {overall_acc, per_emotion: {...}}}

cols = ['K', 'overall', 'joy', 'sad', 'ang', 'fear', 'surp', 'dis']

# Markdown
md_rows = [
    f"| {k} | {v['overall_accuracy']*100:.1f}% | " + " | ".join(
        f"{v['per_emotion'][e]['acc']*100:.1f}%" for e in
        ['joy','sadness','anger','fear','surprise','disgust']) + " |"
    for k, v in rows.items()
]
md = "| " + " | ".join(cols) + " |\n" + "|" + "|".join(["---"]*len(cols)) + "|\n" + "\n".join(md_rows) + "\n"
with (, )  f: f.write(md)


tex = dedent( + *((cols)-) +  + .join(cols) + ) + .join(
     + .join(
          e 
        [,,,,,]) + 
     k, v  rows.items()
) +  + 
 (, )  f: f.write(tex)

The .md and .tex carry the same numbers in their native formats — the orchestrator embeds the .md inline into CLAIMS_LEDGER.md, and paper-write later picks up the .tex verbatim. Keep cell formatting consistent across both (same significant figures, same percent signs) so the two render identically.

Architecture/pipeline diagrams (MANUAL — outside this skill's scope):

• These require manual creation using draw.io, Figma, Keynote, or TikZ
• This skill can generate a rough TikZ skeleton as a starting point, but do not expect publication-quality results
• If the figure already exists in figures/, preserve it and generate only the LaTeX \includegraphics snippet
• Flag as [MANUAL] in the figure plan and latex_includes.tex

Auto-ledger mode error containment. Wrap each per-figure script invocation in a try-block: a script that raises must NOT abort the batch. Record the failure in INDEX.json.figures[].status = "error" with error_detail, and continue to the next figure. A missing data file is a skipped entry (not an error). This keeps the Ledger Figures hook fail-soft, as required by /auto.

Step 5: Run All Scripts

# Run all figure generation scripts
for script in gen_fig*.py; do
    python "$script"
done

Verify all output files exist and are non-empty. In auto-ledger mode, after all scripts finish, write INDEX.json summarizing every plan entry's terminal state (ok / error / skipped).

Step 6: Generate LaTeX Include Snippets

Standalone mode only. For each figure, output the LaTeX code to include it:

% === Fig 2: Training Curves ===
\begin{figure}[t]
    \centering
    \includegraphics[width=0.48\textwidth]{figures/fig2_training_curves.pdf}
    \caption{Training curves comparing factorized and CRF-LR denoising.}
    \label{fig:training_curves}
\end{figure}

Save all snippets to figures/latex_includes.tex for easy copy-paste into the paper.

Skipped in auto-ledger mode — the ledger Markdown embed is the only consumer, and the orchestrator constructs the image-link Markdown itself from INDEX.json.

Step 7: Figure Quality Review with REVIEWER_MODEL

Skipped when review: false (auto-ledger mode default). Otherwise, send figure descriptions and captions to REVIEWER_MODEL for review:

mcp__llm-chat__chat:
  prompt: |
    Review these figure/table plans for a [VENUE] submission.

    For each figure:
    1. Is the caption informative and self-contained?
    2. Does the figure type match the data being shown?
    3. Is the comparison fair and clear?
    4. Any missing baselines or ablations?
    5. Would a different visualization be more effective?

    [list all figures with captions and descriptions]

Step 8: Quality Checklist

Before finishing, verify each figure (from pedrohcgs/claude-code-my-workflow):

• Font size readable at printed paper size (not too small)
• Colors distinguishable in grayscale (print-friendly)
• No title inside figures — titles go only in LaTeX \caption{} (from pedrohcgs)
• Legend does not overlap data
• Axis labels have units where applicable
• Axis labels are publication-quality (not variable names like emp_rate)
• Figure width fits single column (0.48\textwidth) or full width (0.95\textwidth)
• PDF output is vector (not rasterized text)
• No matplotlib default title (remove plt.title for publications)
• Serif font matches paper body text (Times / Computer Modern)
• Colorblind-accessible (if using colorblind palette)

Output

Standalone mode:

figures/
├── paper_plot_style.py          # shared style config
├── gen_fig1_architecture.py     # per-figure scripts
├── gen_fig2_training_curves.py
├── gen_fig3_comparison.py
├── fig1_architecture.pdf        # generated figures
├── fig2_training_curves.pdf
├── fig3_comparison.pdf
├── latex_includes.tex           # LaTeX snippets for all figures
└── TABLE_*.tex                  # standalone table LaTeX files

Auto-ledger mode (one tree per claim under the project root):

figures/
├── C1/
│   ├── paper_plot_style.py
│   ├── gen_c1_robustness.py
│   ├── gen_c1_training_curves.py
│   ├── c1_robustness.pdf
│   ├── c1_robustness.png
│   ├── c1_training_curves.pdf
│   ├── c1_training_curves.png
│   └── INDEX.json
├── C2/
│   └── ...
└── INDEX.md                     # (written by the /auto orchestrator, not this skill)

figures/INDEX.md is the orchestrator's global index — this skill only writes the per-claim subtrees and their INDEX.json files.

Key Rules

• Every figure must be reproducible — save the generation script alongside the output
• Do NOT hardcode data — always read from JSON/CSV files
• Use vector format (PDF) for all plots — PNG only as fallback (or as the Markdown-embed companion in auto-ledger mode)
• No decorative elements — no background colors, no 3D effects, no chart junk
• Consistent style across all figures — same fonts, colors, line widths
• Colorblind-safe — verify with https://davidmathlogic.com/colorblind/ if needed
• One script per figure — easy to re-run individual figures when data changes
• No titles inside figures — captions are in LaTeX (standalone) or Markdown ![caption](path) alt-text (auto-ledger) only
• Comparison tables count as figures — first-class artifacts in every mode. Standalone mode writes a .tex file; auto-ledger mode writes both a .md (for inline ledger embed) and a .tex (for paper-write), exactly parallel to how image types write both .png and .pdf.
• Auto-ledger mode is fail-soft — a script error degrades to a single INDEX.json entry with status: error; never raise out of the batch

Figure Type Reference

Type	When to Use	Typical Size
Line plot	Training curves, scaling trends	0.48\textwidth
Bar chart	Method comparison, ablation	0.48\textwidth
Grouped bar	Multi-metric comparison	0.95\textwidth
Scatter plot	Correlation analysis	0.48\textwidth
Heatmap	Attention, confusion matrix	0.48\textwidth
Box/violin	Distribution comparison	0.48\textwidth
Architecture	System overview	0.95\textwidth
Multi-panel	Combined results (subfigures)	0.95\textwidth
Comparison table	Prior bounds vs. ours (theory)	full width

Acknowledgements

Design pattern (type × style matrix) inspired by baoyu-skills. Publication style defaults and figure rules from pedrohcgs/claude-code-my-workflow. Visualization decision tree from Imbad0202/academic-research-skills.