> For the complete documentation index, see [llms.txt](https://uddtp.gitbook.io/tpgis/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://uddtp.gitbook.io/tpgis/ch2-1.md).

# CH2 重點圖層介紹

介紹系統主要三大類圖層：歷史類比掃描圖資、1/1,000數值地形圖、航照正射影像。