radfitresult {BiodiversityR} | R Documentation |

## Alternative Rank Abundance Fitting Results

### Description

Provides alternative methods of obtaining rank abundance curves than provided by functions `radfit`

, `fisherfit`

and `prestonfit`

(vegan), although these same functions are called.

### Usage

```
radfitresult(x,y="",factor="",level,plotit=T)
```

### Arguments

`x` |
Community data frame with sites as rows, species as columns and species abundance as cell values. |

`y` |
Environmental data frame. |

`factor` |
Variable of the environmental data frame that defines subsets to calculate fitted rank-abundance curves for. |

`level` |
Level of the variable to create the subset to calculate fitted rank-abundance curves. |

`plotit` |
Plot the results obtained by |

### Details

These functions provide some alternative methods of obtaining fitted rank-abundance curves, although functions `radfit`

, `fisherfit`

and `prestonfit`

(vegan) are called to calculate the actual results.

### Value

The function returns the results from three methods of fitting rank-abundance curves:

`radfit` |
results of |

`fisherfit` |
results of |

`prestonfit` |
results of |

Optionally, a plot is provided of the `radfit`

results by `plot.radfit`

.

### Author(s)

Roeland Kindt (World Agroforestry Centre)

### References

Kindt, R. & Coe, R. (2005) Tree diversity analysis: A manual and software for common statistical methods for ecological and biodiversity studies.

https://www.worldagroforestry.org/output/tree-diversity-analysis

### Examples

```
library(vegan)
data(BCI)
BCIall <- t(as.matrix(colSums(BCI)))
radfitresult(BCIall)
```

*BiodiversityR*version 2.16-1 Index]