pgirmess (version 1.6.9)

shannonbioboot: Boostrap Shannon's and equitability indices

Description

Boostrap Shannon's and equitability indices and return an object of class boot. Confidence intervals can be computed with boot.ci().

Usage

shannonbioboot(data1, B = 1000)

Arguments

data1

a data frame of two columns: column 1, dietary category; column 2, abundance (n, biomass,...)

B

number of permutations

Value

An object of class boot including the bootstrap statistics for H' (t1*) and J' (t2*)

Details

Boostrap Shannon\'s and equitability indices and return an object of class boot. Confidence intervals can be computed with boot.ci(). Requires the boot library.

See Also

boot, boot.ci, shannonbio

Examples

# NOT RUN {
data(preybiom)
myboot<-shannonbioboot(preybiom[,5:6],B=100)
library(boot)
boot.ci(myboot, index=1,type=c("norm","basic","perc")) # confidence intervals for H'
boot.ci(myboot, index=2,type=c("norm","basic","perc")) # confidence intervals for J'
# }

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