hyperSpec (version 0.98-20161118)

ncol,hyperSpec-method: The Number of Rows (Spectra), Columns, and Data Points per Spectrum of an hyperSpec Object)

Description

ncol returns the number of columns in x@data. I.e. the number of columns with additional information to each spectrum (e.g. "x", "y", …) + 1 (for column spc containing the spectra).

nrow yields the number of rows in x@data, i.e. the number of spectra in the hyperSpec object.

nwl returns the number of columns in x@data$spc, i.e. the length of each spectrum.

dim returns all three values in a vector.

length is a synonym for nrow. It is supplied so that seq_along (x) returns a sequence to index each spectrum.

Usage

# S4 method for hyperSpec
ncol(x)
# S4 method for hyperSpec
nrow(x)
nwl(x)
# S4 method for hyperSpec
dim(x)
# S4 method for hyperSpec
length(x)

Arguments

x

a hyperSpec object

Value

nrow, ncol, nwl, and length, return an integer.

dim returns a vector of length 3.

See Also

ncol

nrow

dim

length

Examples

# NOT RUN {
ncol (chondro)
nrow (chondro)

nwl  (chondro)
dim (chondro)
length (chondro)
# }