Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu

2012-04-26 Thread Chris Howden
their own judgement. -Original Message- From: r-sig-ecology-boun...@r-project.org [mailto:r-sig-ecology-boun...@r-project.org] On Behalf Of David Valentim Dias Sent: Thursday, 26 April 2012 2:36 PM To: r-sig-ecology@r-project.org Subject: Re: [R-sig-eco] Testing difference between diversity

Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu

2012-04-26 Thread Kay Cichini
-boun...@r-project.org [mailto:r-sig-ecology-boun...@r-project.org] On Behalf Of David Valentim Dias Sent: Thursday, 26 April 2012 2:36 PM To: r-sig-ecology@r-project.org Subject: Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu Hello Cichini, I cannot help

Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu

2012-04-26 Thread Chris Howden
: Thursday, 26 April 2012 2:36 PM To: r-sig-ecology@r-project.org Subject: Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu Hello Cichini, I cannot help with your code but seems like you have a silly hypothesis. Think about it: Probability of two communities

Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu

2012-04-26 Thread Gavin Simpson
On Thu, 2012-04-26 at 00:36 -0400, David Valentim Dias wrote: Hello Cichini, I cannot help with your code but seems like you have a silly hypothesis. Think about it: Probability of two communities to be identical? You need to restate it in some more useful way. We already know most things

Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu

2012-04-26 Thread Gavin Simpson
-ecology-boun...@r-project.org [mailto:r-sig-ecology-boun...@r-project.org] On Behalf Of David Valentim Dias Sent: Thursday, 26 April 2012 2:36 PM To: r-sig-ecology@r-project.org Subject: Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu Hello Cichini

Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu

2012-04-26 Thread Ivailo
On Thu, Apr 26, 2012 at 12:17 AM, Kay Cichini kay.cich...@gmail.com wrote: Hello all, I'd like to test if total diversity differs between two communities. For each community several samples were taken and abundances collapsed over groups to compute total diversity for each group. I tried to

Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu

2012-04-26 Thread Kay Cichini
Hi, thanks a lot - things are much clearer now! Then I will take the one you and Gavin suggested. Kind regards, Kay Am 26.04.2012 17:47 schrieb Jari Oksanen jari.oksa...@oulu.fi: On 26 Apr 2012, at 0:19, Kay Cichini wrote: Hello all, I'd like to test if total diversity differs

Re: [R-sig-eco] Testing difference between diversity indices with vegan::oecosimu

2012-04-25 Thread Chris Howden
Why not try some type of ANOVA style glm? Chris Howden Founding Partner Tricky Solutions Tricky Solutions 4 Tricky Problems Evidence Based Strategic Development, IP Commercialisation and Innovation, Data Analysis, Modelling and Training (mobile) 0410 689 945 (fax / office)