orderwl: Sorting the Wavelengths of a hyperSpec Object Rearranges the...

In hyperSpec: Work with Hyperspectral Data, i.e. Spectra + Meta Information (Spatial, Time, Concentration, ...)

Sorting the Wavelengths of a hyperSpec Object Rearranges the hyperSpec object so that the wavelength vector is in increasing (or decreasing) order.

Description

The wavelength vector is sorted and the columns of the spectra matrix are rearranged accordingly.

Usage

orderwl(x, na.last = TRUE, decreasing = FALSE)

Arguments

x	The hyperSpec object.
na.last, decreasing	Handed to order.

Value

A hyperSpec object.

Author(s)

C. Beleites

See Also

order

Examples

## Example 1: different drawing order in plotspc
spc <- new ("hyperSpec", spc = matrix (rnorm (5) + 1:5, ncol = 5))
spc <- cbind (spc, spc+.5)

plot (spc, "spc")
text (wl (spc), spc [[]], as.character (1:10))
spc <- orderwl (spc)
plot (spc, "spc")
text (wl (spc), spc [[]], as.character (1:10))

## Example 2
spc <- new ("hyperSpec", spc = matrix (rnorm (5)*2 + 1:5, ncol = 5))
spc <- cbind (spc, spc)

plot (seq_len(nwl(spc)), spc[[]], type = "b")
spc[[]]

spc <- orderwl (spc)
lines (seq_len(nwl(spc)), spc[[]], type = "l", col = "red")
spc[[]]

hyperSpec documentation built on May 29, 2024, 7:28 a.m.