Enum: Extraction Method (ExtractionMethodEnum)

How a gridded value was extracted at a target location.

Permissible Values

Value	Meaning	Description
nearest_cell	None	Take the value from the single nearest grid cell
bilinear	None	Bilinear interpolation of the four nearest cells
inverse_distance_weighted_4_nearest_cells	None	Inverse-distance-weighted average of the 4 nearest cells
area_weighted_polygon_mean	None	Area-weighted mean of cells overlapping a polygon
population_weighted_mean	None	Population-weighted mean over a target geography (e
point_station_lookup	None	Direct lookup at a point station observation
intersection_area_proportion	None	Value = fraction of the target cell covered by the source feature (source∩tar...
raster_zonal_sum	None	Sum of source raster cell values falling within each target zone
feature_density	None	Count (or line-length) of source features per unit target area

Slots

Name	Description
extraction_method	How a gridded value was extracted at the patient's coordinates

Identifier and Mapping Information

Schema Source

from schema: https://w3id.org/linkml/microschemas/envar

LinkML Source

name: ExtractionMethodEnum
description: How a gridded value was extracted at a target location.
title: Extraction Method
from_schema: https://w3id.org/linkml/microschemas/envar
rank: 1000
permissible_values:
  nearest_cell:
    text: nearest_cell
    description: Take the value from the single nearest grid cell.
  bilinear:
    text: bilinear
    description: Bilinear interpolation of the four nearest cells.
  inverse_distance_weighted_4_nearest_cells:
    text: inverse_distance_weighted_4_nearest_cells
    description: Inverse-distance-weighted average of the 4 nearest cells. Default
      for DeGAUSS `daymet` and `narr`.
  area_weighted_polygon_mean:
    text: area_weighted_polygon_mean
    description: Area-weighted mean of cells overlapping a polygon.
  population_weighted_mean:
    text: population_weighted_mean
    description: Population-weighted mean over a target geography (e.g. tract).
  point_station_lookup:
    text: point_station_lookup
    description: Direct lookup at a point station observation.
  intersection_area_proportion:
    text: intersection_area_proportion
    description: Value = fraction of the target cell covered by the source feature
      (source∩target area ÷ target area). Areal-coverage operator (e.g. impaired waters).
  raster_zonal_sum:
    text: raster_zonal_sum
    description: Sum of source raster cell values falling within each target zone.
      Raster zonal-sum operator (e.g. population raster over a hex).
  feature_density:
    text: feature_density
    description: Count (or line-length) of source features per unit target area. Occurrence-intensity
      operator (e.g. facilities, roads).