Description Usage Arguments Details Value References Examples
varNBR2
computes the NBR2 index from the shortwave infrared 1 (SWIR1)
and shortwave infrared 2 (SWIR2).
1 | varNBR2(swir1, swir2)
|
swir1 |
a |
swir2 |
a |
The normalized burn ratio 2 (NRB2) is an index to identify burned areas.
In contrast to NBR, NRB2 highlights the sensitivity to water in vegetation
\insertCitelutes2006firemonRGISTools. This function is used within
ls7FolderToVar
, ls8FolderToVar
,
modFolderToVar
and senFolderToVar
.
A NBR2 image in raster
format.
lutes2006firemonRGISTools
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | # path to the cropped and cutted MODIS images for the region of Navarre
wdir <- system.file("ExNavarreVar", package = "RGISTools")
# list all the tif files
files.mod <- list.files(wdir, pattern="\\.tif$", recursive = TRUE, full.names = TRUE)
# print the MOD09 bands
getRGISToolsOpt("MOD09BANDS")
# select the SWIR1 and SWIR2 bands
img.mod.swir1 <- raster(files.mod[6])
img.mod.swir2 <- raster(files.mod[7])
# calculate the NBR2 image
img.mod.nbr2 <- varNBR2(img.mod.swir1,img.mod.swir2)
# plot the image
spplot(img.mod.nbr2,col.regions=rev(heat.colors(20)))
|
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