tidy_MOD13 {phenofit} | R Documentation |
tidy_MOD13
Description
Tidy MODIS 'MOD13' VI products' (e.g. MOD13A1, MOD13A2, ...) raw data exported from
Google Earth Engine.
Tidy contents include:
add exact compositing date, see
getRealDate()
.
Init weigths according
SummaryQA
, seeqc_summary()
.
Usage
tidy_MOD13(infile, outfile, wmin = 0.2)
Arguments
infile |
A character csv file path or a data.table |
outfile |
Output file name. If missing, will not be written to file. |
wmin |
Double, minimum weight of bad points, which could be smaller the weight of snow, ice and cloud. |
Value
A tidied data.table, with columns of 'site', 'y', 't', 'w', 'date' and 'SummaryQA'.
-
site
: site name -
y
: real value of EVI,[-1, 1]
-
date
: image date -
t
: exact compositing date constructed fromDayOfYear
-
w
: weights -
SummaryQA
: A factor, QA types, one of "good", "margin", "snow/ice" or "cloud".
Examples
library(phenofit)
data("MOD13A1")
dt <- tidy_MOD13(MOD13A1$dt)
[Package phenofit version 0.3.9 Index]