ndvi: NDVI in Africa (1990)

In spatialanalysis/geodaData: Spatial Analysis Datasets for Teaching

Description

Normalized Difference Vegetation Index Grid: A subset of 7 by 7 square raster grids with 10 arcminute spacing roughly situated around the border between the Central African Republic, Sudan and Congo, drawn from the NOAA 1990 Global Change Database.

Usage

ndvi

Format

An sf data frame with 83 rows, 60 variables, and a geometry column:

PolyID

Grid cell identifier

GREEN

Greenness vegetation index, based on AVHRR

TEMP

Temperature in 1/10 degree celsius

ELEV

Elevation in meters

PREC

Precipitation (mm per year)

Details

Sf object, unprojected. EPSG 4326: WGS84.

Source

Anselin, L. (1993). Discrete spatial autoregressive models. In M. Goodchild, B. Parks and L. Steyaert (Eds.), Environmental Modeling with GIS, pp. 454-469. New York: Oxford University Press. Table 46.2 on p. 455.

Examples

if (requireNamespace("sf", quietly = TRUE)) {
  library(sf)
  data(ndvi)

  plot(ndvi["ELEV"])
}

spatialanalysis/geodaData documentation built on Oct. 6, 2020, 12:09 p.m.