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3 results for “from:Laurent Gentzbittel”

syntax for indicating fixed covariates in nlmer ?
Laurent Gentzbittel · Mar 10, 2009 · r-sig-mixed-models

Dear all, I would like to use the nlmer for fitting logistic curves to disease index curves. I'm typically comparing different plant lines (several plants from each line are subjected to a pathogen) and would like to test if...

'fixed' covariates in nlmer
Laurent Gentzbittel · Jan 21, 2011 · r-sig-mixed-models

Dear Chris, I ended with a similar conclusion than yours. Yet, from a scientific point of view, the population effects that I would like to add are fixed .... It is really unfortunate that this functionality is not implemented into the...

'fixed' covariates in nlmer
Laurent Gentzbittel · Apr 26, 2010 · r-sig-mixed-models

Dear all, I need to fit a logistic curve to disease index for plants subjected to a pathogen. I have longitudinal data (the disease is monitored on different plants as a function of time) and I would like to use...

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