gapfill (version 0.9.6-1)

ndvi: NDVI Data from Alaska

Description

The dataset was created to test gap-fill algorithms. It mimics a subset of the MODIS NDVI data (product MOD13A1) in the region of Alaska. The data product features one image per 16-day time interval, i.e., 24 images per year. The indicated images (see Image(ndvi)) were downloaded and stored as a 4 dimensional array. Its dimensions correspond to longitude, latitude, day of the year, and year.

Usage

ndvi

Format

Numeric array with 4 dimensions. As indicated by the dimnames of the array:

• dim 1: longitude,

• dim 2: latitude,

• dim 3: day of the year,

• dim 4: year.

The values are NDVI values, and hence, between 0 and 1. Missing values are encoded as NA.

Examples

# NOT RUN {
str(ndvi)
Image(ndvi)
# }