[R] Fitting a model

From: Dani Valverde <daniel.valverde_at_uab.cat>
Date: Thu, 20 Nov 2008 12:53:05 +0100

This is a very basic question, but I don'y know the answer. I have these data

delta <-
c(28.6-8.825,28.6-8.828,28.6-8.836,28.6-8.845,28.6-8.897,28.6-8.944,28.6-9.027,28.6-9.091,28.6-9.263,28.6-9.4,28.6-9.7,28.6-9.981, 28.6-10.287,28.6-10.48,28.6-10.684,28.6-10.875) ph <- c(4.4,4.6,4.8,5,5.2,5.4,5.6,5.8,6,6.2,6.4,6.6,6.8,7,7.2,7.4) plot(ph,delta,ylab=c(expression(Delta*delta)),xlab="pH")

Which kind of model can I fit on these, so that can I predict for a given delta the pH of my sample? Once the model is fitted, how can I plot it on the graph?
Best regards,


Daniel Valverde Saubí

Grup de Biologia Molecular de Llevats
Facultat de Veterinària de la Universitat Autònoma de Barcelona
Edifici V, Campus UAB
08193 Cerdanyola del Vallès- SPAIN

Centro de Investigación Biomédica en Red
en Bioingeniería, Biomateriales y
Nanomedicina (CIBER-BBN)

Grup d'Aplicacions Biomèdiques de la RMN
Facultat de Biociències
Universitat Autònoma de Barcelona
Edifici Cs, Campus UAB
08193 Cerdanyola del Vallès- SPAIN
+34 93 5814126

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Received on Thu 20 Nov 2008 - 11:55:03 GMT

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