ndvi.15gl {StrucDiv}

NDVI, 15 gray levels

Description

NDVI, 15 gray levels

Usage

ndvi.15gl

Format

A matrix with 221 rows and 1092 columns. Mean Normalized Difference Vegetation Index (NDVI), with reduced number of gray levels (15).

Modified remote sensing product

MOD13A2v006

Device

MODIS sensor

Year

2018

Aggregation

Mean aggregation over the growing season 2018

Gray level reduction

Data was binned into 15 bins of equal size.

Location

Study region in North East Eurasia

Data quality

Only pixels with sufficient quality flags were used.

NA handling

NA gaps were filled with a local neighborhood average.

Value range

NDVI values below zero were excluded. NDVI values range between 0 and 1.

Data retrieval

Data was pre-processed and downloaded from Google Earth Engine.

For further details, see https://lpdaac.usgs.gov/products/mod13q1v006/ and https://earthengine.google.com/

Examples

# This dataset is essentially constructed via:
nGrayLevels <- 15
require(raster)
ndvi <- raster(StrucDiv::ndvi)
ndvi15 <- cut(ndvi, breaks=seq(minValue(ndvi), maxValue(ndvi), len=nGrayLevels + 1), 
              include.lowest=TRUE, right=FALSE)