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Message: 1
Date: Tue, 23 Jul 2013 13:51:49 +0200
From: Tara Woud <t.y.woud at students.uu.nl>
To: r-sig-mixed-models at r-project.org
Subject: [R-sig-ME] false convergence of lmer model
Message-ID:
<CAPXVpJnhN326OH3codzQRCwL+pZ0Q1DXdxO22ZToqQYF5rptsQ at mail.gmail.com>
Content-Type: text/plain
Dear all,
To determine the effect of weather parameters on the amount of core areas
of mallards (71 different mallards with measurements on several days), I'm
trying to fit the following model to my data:
model1 <- lmer(Core_areas ~ c_MaxTemp + I(c_MaxTemp^2) + c_MinTemp + I(
c_MinTemp^2) + c_GemTemp + I(c_GemTemp^2) + c_D.rain + c_S.rain + c_Gemwind +
c_Hwind + c_Lwind + (1 | Mallard) # random slope | random factor (here
individual is random factor), family = poisson)
But then I get the following warning message:
In mer_finalize(ans) : false convergence (8)
What consequences does this have? And had anybody an idea how I can solve
this??