遇见数据集

MILLER FOREST TYPES 1938

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Great Smoky Mountains National Park Open Data2025-09-23 更新2026-05-30 收录
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资源简介:

This is a vector polygon file showing the historic range forest types at Great Smoky Mountains National Park. The data was collected from a historic map drawn by Frank Miller, Assistant Forester, in 1938. The map was scanned using a Vidar color scanner and the digital images were brought into ArcMap. The map was originally divided into 4 separate panels, thus there were 4 separate image files. Each image was Georectified, Clipped and then the Mosaic tool was employed to create one large map image. Two feature classes, one a point feature class and the other a polyline feature class, were then created. The polyline class was used to digitize the boundary of each area of vegetation and a point containing the attributes of each area was placed within. After digitizing, the polyline layer was converted to a polygon feature class and the attribute table from the point layer was joined to the corresponding polygon within the feature class. The corresponding Integration of Resource Management Applications (IRMA) NPS Data Store reference is Great Smoky Mountains National Park Miller Vegetation Map.

提供机构:
National Park Service
创建时间:
2025-04-05
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