Subset species based on relative frequency

Subset species based on relative frequency.

sub.sp.matrix(spmatrix, freq = 0.5, common = NULL)

Arguments

spmatrix	a standard community matrix with rows representing sites and columns representing species.
freq	The relative frequency, species with higher relative frequency will be kept in the output.
common	The number of most common species to keep.

Details

sub.sp.matrix will select the species whose relative frequency above 0.5 (default), or select certain number of species based on relative frequency.

Value

A subset matrix of species with high relative frequency.

References

None

Author

Jinlong Zhang jinlongzhang01@gmail.com

Examples


library(vegan)
data(BCI)
## Select the species whose relative frequency
## more than 0.5, from BCI data
sub <- sub.sp.matrix(BCI, freq = 0.5)
## Select the top 30 species according to relative frequency
sub <- sub.sp.matrix(BCI, common = 30)