Description Usage Format Source Examples
A data set of Normalized Difference Vegetation Index values (NDVI) from MODIS for a select number of locations. NDVI was sampled each 8 days (46 per year) for a total of 552 samples spanning years 2000 through 2011. MODIS sensors have a spatial resolution of approximately 250 square meters, thus each column represents a 250 x 250 meter area.
1 | data("mndvi")
|
mndvi
is a data frame with 552 rows and 5 columns. Each column corresponds to the variables as follows:
date
Time stamp
day
a numeric vector of sequential days since January 1, 2000
chl
a numeric vector of NDVI values for the area surrounding the Coweeta Hydrologic Lab (North Carolina) eddy covariance tower at 83.4252 west longitude and 35.0587 north latitude
fef
a numeric vector of NDVI values for the area surrounding the Fraser Experimental Forest (Colorado) CO2 tower (run by NCAR) at 105.885417 west longitude, 39.905028 north latitude
wc
a numeric vector of NDVI values for the area surrounding the Willow Creek (Wisconsin) eddy covariance tower at 90.0798 west longitude, 45.8060 north latitude
http://dx.doi.org/10.3334/ORNLDAAC/1299
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