NDVI: NDVI - Normalized Difference Vegetation Index
In nightmares: Common Analysis with Remote Sensing Data
Description
Usage
Arguments
Value
References
Examples
Description
NDVI is used to quantify vegetation greenness and is useful in understanding vegetation density and assessing changes in plant health. This function requires the Red and Near Infrared values.
Usage
1
NDVI(R, NIR)
Arguments
R
A raster layer object with the reflectance values for the Red band.
NIR
A raster layer object with the reflectance values for the Near Infrared band.
Value
NDVI - Normalized Difference Vegetation Index.
References
https://www.usgs.gov/core-science-systems/nli/landsat/landsat-surface-reflectance-derived-spectral-indices.
https://www.geo.university/pages/spectral-indices-with-multispectral-satellite-data.
Examples
1
2
3
4
5
library(raster)
path_files <- system.file("extdata/", package="nightmares")
bands <- stack(list.files(path_files,".tif", full.names=TRUE))
x <- ref_oli(bands, sun.elev= 67.97)
NDVI(x[[4]], x[[5]])
nightmares documentation built on Oct. 23, 2020, 7:15 p.m.
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Description Usage Arguments Value References Examples
Description
NDVI is used to quantify vegetation greenness and is useful in understanding vegetation density and assessing changes in plant health. This function requires the Red and Near Infrared values.
Usage
1 | NDVI(R, NIR)
|
Arguments
R |
A raster layer object with the reflectance values for the Red band. |
NIR |
A raster layer object with the reflectance values for the Near Infrared band. |
Value
NDVI - Normalized Difference Vegetation Index.
References
https://www.usgs.gov/core-science-systems/nli/landsat/landsat-surface-reflectance-derived-spectral-indices. https://www.geo.university/pages/spectral-indices-with-multispectral-satellite-data.
Examples
1 2 3 4 5 | library(raster)
path_files <- system.file("extdata/", package="nightmares")
bands <- stack(list.files(path_files,".tif", full.names=TRUE))
x <- ref_oli(bands, sun.elev= 67.97)
NDVI(x[[4]], x[[5]])
|
R Package Documentation
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We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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