rmgap

Remove the vertical gaps in spectra (rows of matrix \(X\)), e.g. for ASD. This is done by extrapolation from simple linear regressions computed on the left side of the gaps.

datagen

Data exploration and prediction with focus on high dimensional data and chemometrics.
The package was initially designed about partial least squares regression and discrimination models and variants, in particular locally weighted PLS models (LWPLS). Then, it has been expanded to many other methods for analyzing high dimensional data.
The name 'rchemo' comes from the fact that the package is orientated to chemometrics, but most of the provided methods are fully generic to other domains.
Functions such as transform(), predict(), coef() and summary() are available. Tuning the predictive models is facilitated by generic functions gridscore() (validation dataset) and gridcv() (cross-validation). Faster versions are also available for models based on latent variables (LVs) (gridscorelv() and gridcvlv()) and ridge regularization (gridscorelb() and gridcvlb()).

Marion Brandolini-Bunlon

rchemo

Dimension Reduction, Regression and Discrimination for
Chemometrics

Benoit Jaillais

Jean-Michel Roger

Matthieu Lesnoff

rmgap function

<dl>
<dt>X</dt>
<dd>A dataset.</dd>
<dt>indexcol</dt>
<dd>The column indexes corresponding to the gaps. For instance, if two gaps are observed between indexes 651-652 and between indexes 1451-1452, respectively, then <code>indexcol = c(651, 1451)</code>.</dd>
<dt>k</dt>
<dd>The number of columns used on the left side of the gaps for fitting the linear regressions.</dd>
</dl>

Arguments

Remove the vertical gaps in spectra (rows of matrix \(X\)), e.g. for ASD. This is done by extrapolation from simple linear regressions computed on the left side of the gaps.

Removing vertical gaps in spectra — rmgap

<dl>


<dt>X</dt>
<dd>A dataset.</dd>


<dt>indexcol</dt>
<dd>The column indexes corresponding to the gaps. For instance, if two gaps are observed between indexes 651-652 and between indexes 1451-1452, respectively, then <code>indexcol = c(651, 1451)</code>.</dd>


<dt>k</dt>
<dd>The number of columns used on the left side of the gaps for fitting the linear regressions.</dd>


</dl>

rmgap: Removing vertical gaps in spectra

Description

Usage

Value

Arguments

Examples