Subsetting Nri-objects
Return subsets of Nri-objects which meet conditions.
## S4 method for signature 'Nri' subset(x, subset, ...)
x |
Object of class 'Nri'. |
subset |
Logical expression indicating spectra to keep: missing values are taken as false. See details section. |
... |
Further arguments passed to |
Matchable objects are SI data. Use column names to identify the respectrive SI. See SI to access SI of a Nri. IDs of samples may be accessed using "id.nri" as variable name.
Object of class Nri.
Lukas Lehnert
data(spectral_data)
## Calculate all possible combinations for WorldView-2-8
spec_WV <- spectralResampling(spectral_data, "WorldView2-8",
response_function = FALSE)
nri_WV <- nri(spec_WV, recursive = TRUE)
## Return names of SI data
names(SI(nri_WV))
## Divide into both seasons
sp_summer <- subset(nri_WV, season == "summer")
sp_spring <- subset(nri_WV, season == "spring")
## Print both Nri-objects
sp_summer
sp_spring
## Divide into both seasons and years
sp_summer_14 <- subset(nri_WV, season == "summer" & year == 2014)
sp_spring_14 <- subset(nri_WV, season == "spring" & year == 2014)
## Print both Nri-objects
sp_summer_14
sp_spring_14Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.