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probdwn
2009 Apr 21
1
fitting assimptotic decaing with - and + on X
...am not wrong, the packages
is developed mainly to responde-dose, so the X is from 0-infinite.
I need to fit the data and get an assintoptic (inverse-S) shape.
Any help are welcome.
milton
brazil-toronto
---
sp.coredep.attr<-read.table(stdin(), head=T, sep=",")
species,dst,preference,probdye
coredep,-7500,1,0.001
coredep,-1000,0.95,0.002
coredep,-500,0.9,0.003
coredep,-250,0.8,0.005
coredep,-120,0.7,0.01
coredep,-100,0.5,0.02
coredep,-90,0.3,0.03
coredep,-60,0.2,0.05
coredep,-30,0.15,0.065
coredep,0,0.1,0.08
coredep,30,0.09,0.1
coredep,60,0.08,0.15
coredep,90,0.07,0.2
coredep,120,0.06,...