Chart Generator (Alex)

Data visualization tool producing SVG charts. Use when you need bar charts, line charts, pie charts, tables, sparklines, gauges, or any data visualization fr...

Security Scan

The skill appears to implement the claimed chart-generation functionality, but there are inconsistencies (undeclared runtime dependency on python3, files written to user data dirs, truncated file listings) and some sloppy/buggy script constructs that warrant caution before installing.

Purpose & Capability

Name/description (SVG and ASCII chart generation) match the included scripts: scripts/chart.sh and scripts/script.sh implement ASCII, SVG and HTML exports and CSV import. The presence of sample SVGs and tips.md aligns with the stated purpose.

Instruction Scope

SKILL.md instructs running scripts/chart.sh from the skill directory and documents the CLI options; the runtime actions are limited to parsing user-provided data and writing chart files and logs. However the instructions and scripts write files into the current directory and a persistent data directory (~/.local/share/chart-generator by default), and accept CSV/JSON input — all legitimate for this tool but worth noting because they create persistent files on disk.

Install Mechanism

No install spec is provided (instruction-only install), which keeps risk low. The skill does include executable scripts that will be run when invoked; there is no remote download or third‑party package installation declared.

Credentials

Declared requirements list no environment variables or binaries, yet the scripts call python3 (chart.sh embeds a python3 snippet) and use CHART_DIR/XDG_DATA_HOME/HOME to determine writable paths. The skill requests no secrets, but the missing declaration of python3 and the use of CHART_DIR/XDG_DATA_HOME are inconsistencies the user should be aware of.

Persistence & Privilege

The skill creates persistent files: chart files in the working directory, and a per-user data directory (history.log and saved SVGs under ~/.local/share/chart-generator by default). It does not request always:true or elevated privileges, but it will leave artifacts on disk and maintain a usage history file.

What to consider before installing

This skill appears to do what it says (generate ASCII/SVG/HTML charts), but check a few things before installing or running it in a non‑sandboxed environment: 1) The scripts call python3 even though no binaries are declared — ensure python3 is available and inspect the python portion. 2) The scripts write chart files to the current directory and a persistent data directory (~/.local/share/chart-generator by default) and append to history.log — if you care about privacy or disk writes, run it in a disposable or sandboxed directory or adjust CHART_DIR. 3) Some script snippets show bad/non‑portable constructs and the provided file listings are truncated in places — request the full, untruncated source to review for any hidden network calls or additional behavior before trusting it. 4) If you plan to provide CSV/JSON files, avoid supplying sensitive data until you’ve audited the complete scripts. If you want to proceed, run it in a container or VM first and review the full, untruncated script files for unexpected network calls or eval/exec patterns.

Chart Generator

数据可视化图表生成器，通过 scripts/chart.sh 生成ASCII图表或HTML文件。

为什么用这个 Skill？ / Why This Skill?

• 即开即用：一条命令直接出图，不需要安装matplotlib、echarts等复杂依赖
• 双输出：终端ASCII图表（方便命令行查看）+ HTML文件（方便分享和嵌入）
• 迷你趋势图：Unicode sparkline一行搞定趋势展示
• Compared to asking AI directly: produces actual runnable chart output (ASCII art + HTML files), not just code snippets you'd need to run yourself

使用方式

脚本路径：scripts/chart.sh（相对于本skill目录）

命令一览

# ASCII 柱状图
chart.sh bar "标签1:值1,标签2:值2,标签3:值3" [--title "标题"]

# ASCII 折线图
chart.sh line "1,5,3,8,2,7" [--title "趋势"]

# ASCII 饼图（百分比条形式）
chart.sh pie "A:30,B:50,C:20" [--title "分布"]

# 格式化表格
chart.sh table "H1,H2,H3|R1C1,R1C2,R1C3|R2C1,R2C2,R2C3"

# HTML 柱状图（内联SVG，无外部依赖）
chart.sh html-bar "A:30,B:50,C:20" --output chart.html

# 迷你趋势图（Unicode块字符）
chart.sh sparkline "1,5,3,8,2,7,4,9"

# 数据看板模板（多图表组合）
chart.sh dashboard "标题"

# 进度条可视化
chart.sh progress "已完成,总数" [--title "项目进度"]

# 趋势分析（折线+变化率+统计摘要）
chart.sh trend "10,15,12,20,18,25" [--title "月度增长"]

# ASCII热力图
chart.sh heatmap "1,2,3|4,5,6|7,8,9" [--title "活跃度"]

# SVG柱状图（生成.svg文件，可浏览器打开）
chart.sh svg-bar "销售报告" "Q1:120,Q2:180,Q3:95,Q4:210" [--color blue|green|red|rainbow]

# SVG饼图（扇形+图例+百分比标签）
chart.sh svg-pie "市场份额" "苹果:35,三星:25,华为:20"

# SVG折线图（坐标轴+数据点+面积填充）
chart.sh svg-line "月度趋势" "1月:100,2月:150,3月:120"

# 帮助
chart.sh help

See also: tips.md for data visualization best practices.

数据格式

• 键值对: "标签:数值,标签:数值" — 用于 bar, pie, html-bar
• 纯数值: "1,5,3,8,2,7" — 用于 line, sparkline
• 表格: "列头1,列头2|行1值1,行1值2|行2值1,行2值2" — 管道符分隔行，逗号分隔列

选项

• --title "标题" — 图表标题（bar, line, pie）
• --output file.html — HTML输出文件路径（html-bar）

输出示例 / Example Output

柱状图 (bar)

$ chart.sh bar "销售:85,市场:62,研发:93,运维:41" --title "部门预算(万)"

  部门预算(万)
  销售  ████████████████████░  85
  市场  ███████████████░░░░░░  62
  研发  ██████████████████████ 93
  运维  ██████████░░░░░░░░░░░  41

迷你趋势图 (sparkline)

$ chart.sh sparkline "3,7,2,8,5,9,1,6"
▃▆▁█▄█▁▅

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Commands

Use chart-generator help to see all available commands.