minus_mfd

-.mfd

Subtracts two objects of class <code>mfd</code> (elementwise on their coefficient arrays).
The same basis, variable-count, and observation-replication rules as in
<code>plus_mfd</code> apply. If <code>mfdobj2</code> is missing, returns the
unary negation of <code>mfdobj1</code>.

Provides functional control charts
for statistical process monitoring of functional data,
using the methods of Capezza et al. (2020) <doi:10.1002/asmb.2507>,
Centofanti et al. (2021) <doi:10.1080/00401706.2020.1753581>,
Capezza et al. (2024) <doi:10.1080/00224065.2024.2383674>,
Capezza et al. (2024) <doi:10.1080/00401706.2024.2327346>,
Centofanti et al. (2025) <doi:10.1080/00224065.2024.2430978>,
Capezza et al. (2025) <doi:10.48550/arXiv.2410.20138>.
The package is thoroughly illustrated in the paper of
Capezza et al (2023) <doi:10.1080/00224065.2023.2219012>.

Christian Capezza

funcharts

Functional Control Charts

Fabio Centofanti

Davide Forcina

Antonio Lepore

Biagio Palumbo

Alessandra Menafoglio

Simone Vantini

minus_mfd function

<dl><dt>mfdobj1, mfdobj2</dt>
<dd>Objects of class <code>mfd</code>. If <code>mfdobj2</code> is missing,
unary minus is applied to <code>mfdobj1</code>.</dd></dl>

Arguments

Subtract multivariate functional data (and unary negation) — minus_mfd

<dl>

<dt>mfdobj1, mfdobj2</dt>
<dd>Objects of class <code>mfd</code>. If <code>mfdobj2</code> is missing,
unary minus is applied to <code>mfdobj1</code>.</dd>

</dl>

minus_mfd: Subtract multivariate functional data (and unary negation)

Description

Usage

Value

Arguments

See Also

Examples