TT.chemometrics.alr: Compute the additive log-ratio transformation of...
In soiltexture: Functions for Soil Texture Plot, Classification and Transformation
Description
Usage
Arguments
Author(s)
Description
Function that compute the additive
log-ratio transformation of compositional data (here texture
data). This a a copy-paste-and-rename of the alr function provided
by the package chemometrics: P. Filzmoser and K. Varmuza (2008).
chemometrics: Multivariate Statistical Analysis in Chemometrics.
R package version 0.4.
The function has been modified so it returns NA when a value
is below or equal to zero (this happens when using a regular
grid of texture data, for practical reasons).
The function has also been modified so it uses column name
rather than column index.
Usage
1
TT.chemometrics.alr(X, divisorvar, css.names)
Arguments
X
divisorvar
css.names
Author(s)
Julien Moeys [aut, cre], Wei Shangguan [ctb], Rainer Petzold [ctb], Budiman Minasny [ctb], Bogdan Rosca [ctb], Nic Jelinski [ctb], Wiktor Zelazny [ctb], Rodolfo Marcondes Silva Souza [ctb], Jose Lucas Safanelli [ctb], Alexandre ten Caten [ctb]
soiltexture documentation built on May 2, 2019, 9:28 a.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Description Usage Arguments Author(s)
Description
Function that compute the additive
log-ratio transformation of compositional data (here texture
data). This a a copy-paste-and-rename of the alr function provided
by the package chemometrics: P. Filzmoser and K. Varmuza (2008).
chemometrics: Multivariate Statistical Analysis in Chemometrics.
R package version 0.4.
The function has been modified so it returns NA when a value
is below or equal to zero (this happens when using a regular
grid of texture data, for practical reasons).
The function has also been modified so it uses column name
rather than column index.
Usage
1 | TT.chemometrics.alr(X, divisorvar, css.names)
|
Arguments
X |
|
divisorvar |
|
css.names |
Author(s)
Julien Moeys [aut, cre], Wei Shangguan [ctb], Rainer Petzold [ctb], Budiman Minasny [ctb], Bogdan Rosca [ctb], Nic Jelinski [ctb], Wiktor Zelazny [ctb], Rodolfo Marcondes Silva Souza [ctb], Jose Lucas Safanelli [ctb], Alexandre ten Caten [ctb]
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.