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From: Holly Kalyn Bogard on 24 Mar 2010 15:42
Hello.

I am a graduate student using GLIMMIX to analyze count data. I am
investigating the effects that the point count distance to industrial
disturbance has on bird abundance. Several of my models are bringing
up a note which I have not encountered before. Has anyone encountered
this warning? Any advice? I would appreciate any advice.

Thanks,

Holly


2173 title 'Point Count Distance To DIRT Model';
2174 proc glimmix data=merged method=LAPLACE IC=pq;
2175 class section pasture;
2176 model species=logPCDT_DIRT/ dist=p link=log solution DDFM=BW;
2177 random intercept / subject=section(pasture);
2178 run;


NOTE: Convergence criterion (GCONV=1E-8) satisfied.
NOTE: At least one element of the gradient is greater than 1e-3.
NOTE: PROCEDURE GLIMMIX used (Total process time):
real time 0.28 seconds
cpu time 0.25 seconds
From: Ryan on 24 Mar 2010 17:11
On Mar 24, 3:42 pm, Holly Kalyn Bogard <holly.bog...(a)ec.gc.ca> wrote:
> Hello.
>
> I am a graduate student using GLIMMIX to analyze count data.  I am
> investigating the effects that the point count distance to industrial
> disturbance has on bird abundance.  Several of my models are bringing
> up a note which I have not encountered before.  Has anyone encountered
> this warning?  Any advice?  I would appreciate any advice.
>
> Thanks,
>
> Holly
>
> 2173  title 'Point Count Distance To DIRT Model';
> 2174  proc glimmix data=merged method=LAPLACE IC=pq;
> 2175  class section pasture;
> 2176  model species=logPCDT_DIRT/ dist=p link=log solution DDFM=BW;
> 2177  random intercept / subject=section(pasture);
> 2178  run;
>
> NOTE: Convergence criterion (GCONV=1E-8) satisfied.
> NOTE: At least one element of the gradient is greater than 1e-3.
> NOTE: PROCEDURE GLIMMIX used (Total process time):
>       real time           0.28 seconds
>       cpu time            0.25 seconds

Out of curiosity, why didn't you set use the adaptive quadrature
method (method=quad)? -Ryan
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