地板地质区域 - 单位？

Question

我有一个地质数据框。我将几个功能应用于GeodataFrame。

1. buffer-

这会在坐标/几何形状周围创建一组点。

import geopandas
from shapely.geometry import Point, LineString, Polygon

s = geopandas.GeoSeries(
    [
        Polygon([(0, 0), (1, 1), (0, 1)]),
        Polygon([(10, 0), (10, 5), (0, 0)]),
        Polygon([(0, 0), (2, 2), (2, 0)]),
        LineString([(0, 0), (1, 1), (0, 1)]),
        Point(0, 1)
    ]
)

s.buffer(0.2)

2. 现在，我想使用以下方式测量缓冲几何形状的面积： https://geopandas.org/en/stable/docs/reference/api/geopans.geoseries.area.html

   s.area

代码>数据框的信息是：

<Derived Projected CRS: ESRI:102003>
Name: USA_Contiguous_Albers_Equal_Area_Conic
Axis Info [cartesian]:
- E[east]: Easting (metre)
- N[north]: Northing (metre)
Area of Use:
- name: United States (USA) - CONUS onshore - Alabama; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming.
- bounds: (-124.79, 24.41, -66.91, 49.38)
Coordinate Operation:
- name: USA_Contiguous_Albers_Equal_Area_Conic
- method: Albers Equal Area
Datum: North American Datum 1983
- Ellipsoid: GRS 1980
- Prime Meridian: Greenwich

我的问题是：计算区域的单位是什么？

Answer 1

区域的单位将为 meter^2 。单位在CRS中报告。

据推测，实际的ShapeFile具有非常大的值（例如，在〜1E6范围内）。请参阅此问题：解释geopandas polygon坐标