mvformula | R Documentation |

`mvformula`

is a method to create an object of class `mvformula`

`as.mvformula`

is a function to turn a formula into a `mvformula`

`is.mvformula`

tests if its argument is a `mvformula`

object.
`mvformula`

is a class of objects for which special-purpose plotting and regression functions have been written in the `mvabund-package`

. The above are useful preliminary functions before analysing data using the special-purpose functions. These new functions were written specially for the analysis of multivariate abundance data in ecology, hence the title 'mvabund'.

mvformula(x) as.mvformula(x) is.mvformula(x)

`x` |
an |

`mvformula`

is a method to create an object of class `mvformula`

If the response of the resulting formula is not a `mvabund`

object, a warning
will be printed.
`as.mvformula`

is a function to turn a formula into a `mvformula`

if the response in x is a data.frame or an unsuitable object the conversion
will fail.

a formula mvabund for `mvformula`

and `as.mvformula`

a logical value indicating whether `x`

is a `mvformula`

object

Ulrike Naumann and David Warton <David.Warton@unsw.edu.au>.

`mvabund`

.
`manylm`

.

require(graphics) data(spider) spiddat <- mvabund(spider$abund) X=as.matrix(spider$x) ## Create a formula for multivariate abundance data: foo <- mvformula( spiddat~X ) ## Check whether foo is a mvformula: is.mvformula(foo) ## Plot a mvformula: plot(foo)

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