[R] 1-Pearson's R Distance

From: Rodrigo Aluizio <r.aluizio_at_gmail.com>
Date: Thu, 27 Nov 2008 12:42:23 -0200

Hi again List,

Well this time I’m writing for a friend (really J). He needs to create a distance matrix based on an abundance matrix using the 1-Pearson’s R index. Well I told him to look at the proxy package, but there is only Pearson Index. He needs it to perform a clustering. Well, as soon as he told me there proxy only had the Pearson index I thought: “He could just do something like


But I didn’t tell him that because I’m not sure it’s the same thing, and it probably will generate a strange cluster with the braches ends distant from the base…

He told me that Statistica 7.0 has this Index, but he doesn’t own it. So… Is there a way on R to do this correctly?  

Thanks for the attention.

MSc. <mailto:r.aluizio_at_gmail.com> Rodrigo Aluizio Centro de Estudos do Mar/UFPR
Laboratório de Micropaleontologia
Avenida Beira Mar s/n - CEP 83255-000
Pontal do Paraná - PR - BRASIL
Fone: (0**41) 3455-1496 ramal 217
Fax: (0**41) 3455-1105

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