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42 lines
1.7 KiB
Markdown
42 lines
1.7 KiB
Markdown
---
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name: building-analytics-charts
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description: Add or change charts from raw data. Use when the user asks for a chart, graph, or analytics visualization from JSON/data.
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---
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# Analytics charts (workflow)
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When the user wants a chart or visualization from data, follow this workflow. Charts use **Recharts** via the **AnalyticsChart** component.
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## Dependencies
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Ensure the following package is installed in the project:
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```bash
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npm install recharts
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```
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## 1. Interpret data type
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- **Time-series**: data over time or ordered (dates, timestamps). Use a line chart. Raw shape often has date-like keys and a numeric value.
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- **Categorical**: data by category (labels, segments). Use a bar chart. Raw shape often has a category name and a numeric value.
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If the user says "over time", "trend", or uses date-like keys → time-series. If they say "by category", "by X", or use label-like keys → categorical.
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## 2. Map data to chart shape
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- **Time-series**: produce `[{ x: string, y: number }, ...]` (e.g. map `date`→`x`, `value`→`y`).
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- **Categorical**: produce `[{ name: string, value: number }, ...]` (e.g. map `category`→`name`, `total`→`value`).
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See [schema-mapping.md](docs/schema-mapping.md) for examples.
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## 3. Choose theme
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- **red**: declining, loss, negative trend.
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- **green**: growth, gain, positive trend.
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- **neutral**: default or mixed.
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## 4. Generate and place the chart
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- Use **AnalyticsChart** with `chartType` (`"time-series"` or `"categorical"`), `data` (mapped array), `theme`, and optional `title`. Wrap in **ChartContainer** if the app uses it for chart blocks.
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- Insert the chart inside the existing app (e.g. main content or a route), not as the entire page.
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