can't get getTrophicLevel() to work

[camillanovaglio]

Hi,
I would like to extrapolate trophic levels for a subset of fish.data:

getTrophicLevel(fish.data[1:10]) # works

reef <- which_fish("reef", "habitat", fish.data)
reef_troph<-getTrophicLevel(fish.data[reef]) # does not work

Error in xpathApply(summaryPage, "//*[contains(@href, '/Ecology/FishEcologySummary.php')][1]", :
subscript out of bounds

What am I doing wrong?

Cheers,
Cami

[tpoisot]

Hi @camillanovaglio

It can be that the fish you are trying to look at has no /Ecology/FishEcologySummary.php page associated. Can you copy/paste the output of fish.data[1:10] ?