saifulislamferoz 41c051f54d Add support for Excel sparklines ...

Implements native sparkline support (line, column, and win/loss) in the
Xlsx reader and writer, resolving issue #4941.

- New model classes under Worksheet/Sparkline: Sparkline, SparklineGroup,
  and the SparklineType enum.
- Worksheet gains a sparkline group collection with addSparkline(),
  addSparklineGroup(), getSparklineGroupCollection(), and
  removeSparklineGroupCollection(), plus deep-clone support.
- Reader/Xlsx/Sparklines parses x14:sparklineGroups from the sheet extLst.
- Writer/Xlsx/Worksheet emits x14:sparklineGroups; writeExtLst is
  refactored so conditional-formatting data bars and sparklines share a
  single extLst.
- Adds unit tests, an Xlsx round-trip test, a runnable sample, and docs.

2026-07-28 06:04:37 +06:00

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XLOOKUP

2026-03-25 21:44:54 -07:00

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Add support for Excel sparklines

2026-07-28 06:04:37 +06:00

faq.md

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index.md

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