spc.NA.approx

spc.NA.linapprox

Replace <code>NA</code>s in the spectra matrix by interpolation. With
less than 4 points available linear interpolation of the 2 neighbour points is used. For larger numbers of
neighbour points, smoothing interpolation is performed by
<code><a href="/link/smooth.spline?package=hyperSpec&version=0.100.2" data-mini-rdoc="hyperSpec::smooth.spline">smooth.spline</a></code>.

Comfortable ways to work with hyperspectral data sets.
I.e. spatially or time-resolved spectra, or spectra with any other kind
of information associated with each of the spectra. The spectra can be data
as obtained in XRF, UV/VIS, Fluorescence, AES, NIR, IR, Raman, NMR, MS,
etc. More generally, any data that is recorded over a discretized variable,
e.g. absorbance = f(wavelength), stored as a vector of absorbance values
for discrete wavelengths is suitable.

Claudia Beleites

hyperSpec

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

Valter Sergo

Alois Bonifacio

Marcel Dahms

Björn Egert

Simon Fuller

Vilmantas Gegzna

Rustam Guliev

Bryan A. Hanson

Michael Hermes

Martin Kammer

Roman Kiselev

Sebastian Mellor

spc.NA.approx function

<dl><dt>spc</dt>
<dd>hyperSpec object with spectra matrix containing <code>NA</code>s</dd>
<dt>neighbours</dt>
<dd>how many neighbour data points should be used to fit the
line</dd>
<dt>w, df, spar</dt>
<dd>see <code><a href="/link/smooth.spline?package=hyperSpec&version=0.100.2" data-mini-rdoc="hyperSpec::smooth.spline">smooth.spline</a></code></dd>
<dt>debuglevel</dt>
<dd>see <code>options</code></dd>
<dt>...</dt>
<dd>ignored</dd></dl>

Arguments

Author

Replace <code>NA</code>s in the spectra matrix by interpolation. With
less than 4 points available linear interpolation of the 2 neighbour points is used. For larger numbers of
neighbour points, smoothing interpolation is performed by
<code><a href='https://rdrr.io/r/stats/smooth.spline.html'>smooth.spline</a></code>.

Impute missing data points — spc.NA.approx

<dl>

<dt>spc</dt>
<dd>hyperSpec object with spectra matrix containing <code>NA</code>s</dd>


<dt>neighbours</dt>
<dd>how many neighbour data points should be used to fit the
line</dd>


<dt>w, df, spar</dt>
<dd>see <code><a href='https://rdrr.io/r/stats/smooth.spline.html'>smooth.spline</a></code></dd>


<dt>debuglevel</dt>
<dd>see <code>options</code></dd>


<dt>...</dt>
<dd>ignored</dd>

</dl>

Impute missing data points

spc.NA.approx: Impute missing data points

Description

Usage

Value

Arguments

Author

Examples