ursa (version 3.9.4)

band_group: Extract certain statistics of each band.

Description

Function from this band.* list returns required statistics for each band.

Usage

band_mean(obj)
band_sd(obj)
band_sum(obj)
band_min(obj)
band_max(obj)
band_n(obj)
band_nNA(obj)

Arguments

obj

Object of class ursaRaster.

Value

Named vector of numerical or integer values. Band names are used for naming.

Details

• band_mean returns mean value.

• band_sd returns value of standard deviation with n-1 denominator.

• band_sum returns sum of values.

• band_min returns minimal value.

• band_max returns maximal value.

• band_n returns number of non-NA pixels.

• band_nNA returns number of NA pixels.

See Also

band_stat

Examples

# NOT RUN {
session_grid(NULL)
a <- ursa_dummy()
print(a)
print(a<80)
print(class(a))
a[a<80]
a[a<80] <- NA
b1 <- band_stat(a)
print(b1)
b2.n <- band_n(a)
str(b2.n)
b2.mean <- band_mean(a)
print(b1$mean)
print(b2.mean)
print(b1$mean-b2.mean)
# }