AVI: AVI - Advanced Vegetation Index
In nightmares: Common Analysis with Remote Sensing Data
Description
Usage
Arguments
Value
References
Examples
Description
AVI is similar to NDVI and it is used in vegetation studies to monitor crop and forest variations over time. Through the multi-temporal combination of the AVI and the NDVI, users can discriminate different types of vegetation and extract phenology characteristics.
Usage
1
AVI(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
AVI - Advanced Vegetation Index
References
Rikimaru et al., 2002. Tropical forest cover density mapping. Tropical Ecology, 43, 39-47.
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)
AVI(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
AVI is similar to NDVI and it is used in vegetation studies to monitor crop and forest variations over time. Through the multi-temporal combination of the AVI and the NDVI, users can discriminate different types of vegetation and extract phenology characteristics.
Usage
1 | AVI(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
AVI - Advanced Vegetation Index
References
Rikimaru et al., 2002. Tropical forest cover density mapping. Tropical Ecology, 43, 39-47. 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)
AVI(x[[4]], x[[5]])
|
R Package Documentation
Browse R Packages
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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