CompositionMatrix-class {nexus} | R Documentation |
Compositional Matrix
Description
An S4 class to represent compositional data.
Usage
is_composition(object)
Arguments
object |
A |
Slots
totals
A
numeric
vector to store the absolute row sums (before the closure of the compositions).
Coerce
In the code snippets below, x
is a CompositionMatrix
object.
as.data.frame(x)
Coerces to a
data.frame
.
Subset
In the code snippets below, x
is a CompositionMatrix
object.
x[i, j]
Extract parts of a matrix (see
[
).
Note
This class inherits from NumericMatrix
.
Author(s)
N. Frerebeau
See Also
Other classes:
GroupedComposition-class
,
GroupedLogRatio-class
,
LogRatio-class
,
NumericMatrix-class
,
OutlierIndex-class
,
ReferenceGroups-class
Examples
## Data from Aitchison 1986
data("hongite")
## Coerce to compositional data
coda <- as_composition(hongite)
## codaccess
dim(coda) # Get the matrix dimensions
row(coda) # Get the row indexes
col(coda, as.factor = TRUE) # Get the column indexes
nrow(coda) # Get the number of rows
ncol(coda) # Get the number of columns
dimnames(coda) # Get the dimension names
rownames(coda) <- LETTERS[1:25] # Set the row names
rownames(coda) # Get the rownames
colnames(coda) <- letters[21:25] # Set the column names
colnames(coda) # Get the column names
[Package nexus version 0.6.0 Index]