bise {bise}R Documentation

Best Index Slope Extraction

Description

Computes the upper envelope of daily NDVI values over one year.

Usage

bise(ndvi)

Arguments

ndvi Double(real), observed NDVI values between 0 and 1

Details

to be followed

Value

NDVI values extracted out of very noise satellite observations. These are regarded to be the 'TRUE' observations.

Author(s)

Daniel Doktor, Alberte Bondeau

References

Viovy et. al (1992). The Best Index Slope Extraction (BISE) - a method for reducing noise in NDVI time-series. International Journal of Remote Sensing, 13, 1585-1590.

Examples

## Not run: 
    load("/1991-400")
    ndvi <- result[,400]
    ndvi <- ifelse(ndvi < 0 | ndvi >= 1, 0, ndvi)
    ndvi <- ifelse(is.na(ndvi)==TRUE, 0, ndvi)
    bise(ndvi)
## End(Not run)

[Package bise version 1.0 Index]