...@okologia.mta.hu
Sent: 11 May 2015 08:49
To: r-sig-ecology@r-project.org
Subject: Re: [R-sig-eco] slope for rarefaction curve
Dear Simone,
Function rarefy uses the function developed by Hurlbert, thus if you
need slope in a certain point (as your graph suggests) you can calculate
the derivative
-dukat.zol...@okologia.mta.hu
Sent: 11 May 2015 08:49
To: r-sig-ecology@r-project.org
Subject: Re: [R-sig-eco] slope for rarefaction curve
Dear Simone,
Function rarefy uses the function developed by Hurlbert, thus if you
need slope in a certain point (as your graph suggests) you can calculate
Dear Simone,
Function rarefy uses the function developed by Hurlbert, thus if you
need slope in a certain point (as your graph suggests) you can calculate
the derivative of this function. It is not an easy job, because
factorials should be derived. See cues here how it can be done:
Dear all,
apologies for the total beginner's question. I was wondering if anyone
can give some advice on how to calculate the slope for the last 10% of
the records of a rarefaction curve computed with rarefy from vegan.
Here is a graphic representation of what I would like to do:
