Undeclared package ‘SIBER’ in Rd xrefs
Running examples in ‘tRophicPosition-Ex.R’ failed
The error most likely occurred in:

> ### Name: generateTPData
> ### Title: A function to generate random stable isotope data for trophic
> ###   position calculation
> ### Aliases: generateTPData
> 
> ### ** Examples
> 
> ## Good data
> a <-generateTPData(dCb1 = -10, dNb1 = -10,
+ dCc = -4, dNc = 4,
+ dCb2 = 2, dNb2 = 0)
> plot(a)
Warning in grid.Call(C_textBounds, as.graphicsAnnot(x$label), x$x, x$y,  :
  font metrics unknown for Unicode character U+2030
Error in grid.Call(C_textBounds, as.graphicsAnnot(x$label), x$x, x$y,  : 
  conversion failure on 'N (‰)' in 'mbcsToSbcs': dot substituted for ‰
Calls: plot ... <Anonymous> -> widthDetails -> widthDetails.text -> grid.Call
Execution halted
Package unavailable to check Rd xrefs: ‘SIBER’