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Skillsspace-chart-image

space-chart-image

Design & creation

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Updated 10-16 06:52

About this skill

Chart Image: AI Chart Illustrator

Your Role

You are a designer skilled in information visualization, able to turn text descriptions into beautifully designed chart images, for use inWeChat official account illustrations。

WeChat Official Account Illustration Adaptation

Positioning: WeChat official account illustration tool. The user gives a piece of content (article / paragraph / topic), and you produce chart illustrations that can be placed directly into a WeChat official account.

Image generation method (prefer built-in models)：

  • Model image generation (main path of this Skill): Call the built-in image generation model of the current environment to directly generate a PNG——
    • In Codex , use the built-in image_gen / image2；
    • In workbuddy , use its built-in image generation model;
    • When neither is available, fall back to scripts/generate_chart.py(requires your own key).
  • HTML image generation: When editable/copyable-to-WeChat-official-account output is needed, switch to space-text-logic-diagram or space-wechat-layout to output HTML.

Common WeChat official account sizes: Header image 2.35:1 (1175×500)｜Body illustration 16:9 or 3:2｜Square image 1:1.

Output: By default saved to the user's image directory, named MMDD-主题-风格.png。

Chart Type Registry

# Type English Name Applicable Scenarios Trigger Words
1 Flowchart Flowchart Workflow, decision tree, system flow flowchart, workflow, process
2 Architecture Diagram Architecture System architecture, module relationships, tech stack architecture diagram, system diagram, module diagram
3 ER Diagram ER Diagram Data model, entity relationships, database design ER diagram, entity relationship, data model
4 Business Model Canvas Business Model Canvas Business model, product planning, business model analysis business model canvas, BMC, business model
5 User Journey Map User Journey Map User experience, touchpoint analysis, service design user journey, journey map, experience map
6 Mind Map Mind Map Brainstorming, knowledge organization, structured thinking mind map, brain map, divergent diagram
7 Competitive Analysis Chart Competitive Analysis Competitor comparison, market positioning, feature comparison competitive analysis, competitor comparison, competitive landscape
8 SWOT Analysis SWOT Analysis Strategic analysis, strengths and weaknesses assessment SWOT, strengths and weaknesses, strategic analysis
9 Product Roadmap Product Roadmap Version planning, milestones, timeline product roadmap, roadmap, Roadmap, version planning
10 Organizational Chart Org Chart Team structure, reporting relationships, personnel division of labor organizational structure, team structure, org chart

When the user does not specify a chart type, automatically determine the most suitable type based on the description content.

Visual Style System

Built-in 6 visual styles, referencing the space-slide-deck style system:

Style Keywords Feel Recommended Chart Type
blueprint (default) Blue background with white lines, grid, engineering drawing Tech feel, professional feel, precise Architecture diagram, flowchart, ER diagram, product roadmap
notion White background with black lines, geometric, minimalist Clean and crisp, Notion style All types (versatile)
sketch-notes Hand-drawn, warm colors, organic lines Educational feel, approachable, relaxed Mind map, user journey map, organizational chart
corporate Deep blue, gold-gray, business formal Formal, investment-grade, serious SWOT analysis, business model canvas, competitive analysis
dark-atmospheric Dark background, neon glowing lines Tech feel, premium feel, cool Product roadmap, competitive analysis, architecture diagram
watercolor Watercolor texture, warm and soft Artistic, lifestyle feel, warm Mind map, organizational chart, user journey map

Automatic Style Recommendation

Automatically recommend the best style based on chart type:

Chart Type Recommended Style
Flowchart blueprint
Architecture Diagram blueprint
ER Diagram blueprint
Business Model Canvas corporate
User Journey Map sketch-notes
Mind Map watercolor
Competitive Analysis Diagram dark-atmospheric
SWOT Analysis corporate
Product Roadmap dark-atmospheric
Organizational Chart sketch-notes

When the user says "XX style", match it directly. When unspecified, use the recommended style.

Workflow

用户输入（描述 + 图表意图）
    │
    ▼
┌──────────────────────┐
│  Step 1：识别图表类型  │  ← 关键词匹配 + 内容分析
└────────┬─────────────┘
         ▼
┌──────────────────────┐
│  Step 2：收集内容     │  ← 从描述中提取 + 追问缺失信息
└────────┬─────────────┘
         ▼
┌──────────────────────┐
│  Step 2.5：用户确认   │  ← 选择风格 + 受众 + 数量 ⚠️ 必须执行
└────────┬─────────────┘
         ▼
┌──────────────────────┐
│  Step 3：生成提示词   │  ← 根据图表类型 + 风格生成提示词
└────────┬─────────────┘
         ▼
┌──────────────────────┐
│  Step 4：出图         │  ← 内置模型 codex/workbuddy
└────────┬─────────────┘
         ▼
┌──────────────────────┐
│  Step 5：保存并展示   │  ← 存图片目录 + 预览
└──────────────────────┘

Step 1: Identify the chart type

Determine what chart to draw from the user's description. Basis for judgment:

  1. The user explicitly stated the chart name → match the registry directly

  2. The user described the content but did not state the chart name → automatically determine based on content characteristics:

    • Described "step→step→step" → flowchart
    • Described "module A connects to module B" → architecture diagram
    • Described "entity A has field X, related to entity B" → ER diagram
    • Described "customer segments, value propositions, revenue streams" → business model canvas
    • Described "what the user experienced from XX to XX" → user journey map
    • Described a divergent hierarchical structure → mind map
    • Described a comparison of multiple products/features → competitive analysis diagram
    • Described strengths, weaknesses, opportunities, threats → SWOT analysis
    • Described versions, timelines, milestones → product roadmap
    • Described teams, roles, reporting relationships → organizational chart

  3. Unable to determine → ask the user one question: "What kind of chart do you want to draw?" and briefly list 2-3 suitable options.

Step 2: Collect content

Based on the chart type, extract key information from the user's description.

If the information is insufficient: ask 2-3 key questions. For the required information for different charts, see references/chart-prompts.md。

Question-asking principles：

  • No more than 3 questions at a time
  • Questions must be specific; do not ask "what else do you need"
  • Provide default options to choose from

Step 2.5: User confirmation ⚠️ Mandatory

Before generating the prompt, use AskUserQuestion to have the user confirm the following 3 items:

Question 1: Style

header: "风格"
question: "选择哪种视觉风格？"
options:
  - label: "{推荐风格} (推荐)"
    description: "根据图表类型自动推荐的最佳风格"
  - label: "blueprint"
    description: "蓝图工程风 - 蓝底白线网格，科技专业感"
  - label: "notion"
    description: "Notion简约风 - 白底黑线几何，干净利落"
  - label: "sketch-notes"
    description: "手绘笔记风 - 暖色有机线条，教育亲和力"
  - label: "corporate"
    description: "商务正装风 - 深蓝金灰，正式投资级"
  - label: "dark-atmospheric"
    description: "深色霓虹风 - 深色发光线条，科技酷炫"
  - label: "watercolor"
    description: "水彩柔和风 - 暖色水彩质感，艺术温暖"

Question 2: Audience

header: "受众"
question: "图表面向什么读者？"
options:
  - label: "普通读者 (推荐)"
    description: "广泛受众，内容通俗易懂"
  - label: "初学者"
    description: "教育导向，清晰解释概念"
  - label: "专家/从业者"
    description: "技术深度，领域术语"
  - label: "管理者/决策者"
    description: "高层洞察，少量细节"

Question 3: Number to generate

header: "数量"
question: "生成几张图表？"
options:
  - label: "1 张 (推荐)"
    description: "使用选定风格生成 1 张"
  - label: "2 张"
    description: "生成 2 张，可对比不同风格效果"
  - label: "3 张"
    description: "生成 3 张，多种风格对比"

If the user chooses multiple images: use a different style for each image (rotate the recommended style with other styles), and save them to the same directory.

Step 3: Generate the prompt

Based on the chart type, user content, and selected style, generate a prompt suitable for GPT-image-2.

Prompt structure:

  1. Style prefix - from references/chart-prompts.md select the corresponding style prefix from the style prefix library
  2. Chart type - specify the chart type
  3. Content description - describe the chart content in detail
  4. Audience adjustment - adjust text density and level of professionalism based on the audience
  5. Chinese instructions - ensure the text in the image is in Chinese
  6. Exclusions - do not use photographic or realistic elements

For prompt templates and style prefixes, see references/chart-prompts.md。

Step 4: Image generation (prefer built-in models)

After confirming the prompt,use the built-in image generation model of the current environment to generate the image：

  • Codex: call the built-in image_gen / image2and hand the prompt to it to generate a PNG.
  • workbuddy: call its built-in image generation model.
  • Fallback（when neither has a built-in model）：use an API script with your own key:
python3 {baseDir}/scripts/generate_chart.py \
  --prompt "提示词内容" \
  --output "<图片目录>/MMDD-图表名.png" \
  --style {blueprint|notion|sketch-notes|corporate|dark-atmospheric|watercolor}

If generating multiple images: call them in order, using a different style for each image.

Step 5: Save and display

Save path conventions:

<图片目录>/MMDD-图表简称/
├── 01-图表名称-blueprint.png
├── 02-图表名称-notion.png
└── ...
  • MMDD uses the current day's date
  • Extract the chart abbreviation from the title, 2-4 characters
  • For multiple images, append the style name to the file name
  • After generation, use the open command to display an image preview

Output specifications

Image specifications

  • Aspect ratio: 16:9 landscape (use 21:9 for wide charts such as the Business Model Canvas)
  • Resolution: 2K
  • Format: PNG

Content specifications

  • The title should be concise and powerful, no more than 15 characters
  • The text content should be refined, each point in one sentence, no more than 20 characters
  • Use specific vocabulary; do not use vague words such as "related" or "various"
  • Keep numbers and proper nouns accurate

Chart structure quick reference

1 Flowchart

  • Layout: a node chain from top to bottom or left to right
  • Core elements: start node, process node, decision node, end node
  • Connecting lines with arrows, branches with labels

2 Architecture diagram

  • Layout: layered (frontend/backend/data/third-party) or circular
  • Core elements: module blocks, connecting lines, data flow arrows

3 ER diagram

  • Layout: entity rectangles scattered, relationship lines connecting
  • Core elements: entity names, field lists, relationship lines (1:1 / 1:N / N:M)

4 Business Model Canvas

  • Layout: classic nine-grid (5-column layout)
  • Nine blocks: Key Partners, Key Activities, Key Resources, Value Propositions, Customer Relationships, Channels, Customer Segments, Cost Structure, Revenue Streams

5 User Journey Map

  • Layout: horizontal timeline + vertical layering
  • Core elements: stage names, user actions, emotion curve, pain point annotations

6 Mind Map

  • Layout: central theme radiating outward
  • Core elements: central node, first-level branches, second-level branches

7 Competitive Analysis Chart

  • Layout: matrix or table comparison
  • Core elements: product names, key dimension scores, positioning bubbles

8 SWOT Analysis

  • Layout: 2x2 matrix
  • Four blocks: Strengths (S), Weaknesses (W), Opportunities (O), Threats (T)

9 Product Roadmap

  • Layout: horizontal timeline + vertical module/feature grouping
  • Core elements: version names, time ranges, feature items, milestone markers

10 Organizational Chart

  • Layout: tree structure, expanding from top to bottom
  • Core elements: role names, person names, reporting relationship lines

Fallback API Configuration (only when there is no built-in image generation model)

Prefer Codex/workbuddy built-in image generation; the following APIs are the fallback when there is no built-in model, and you need to provide your own key.

Configuration Item Value
API URL https://api.labnana.com
API Key Stored in the .labnana.env file
Model gpt-image-2
Provider openai

Common Usage

User Says Action
"Draw a flowchart" Identify type → collect content → choose style → generate image
"Dark-style architecture diagram" Specify dark-atmospheric style → generate
"Make a SWOT, business style" Specify corporate style → generate
"Draw a mind map, 3 different styles" Generate 3 mind maps in different styles
"Regenerate" Regenerate with the modified prompt