Entering edit mode
Dear Dorthe,
This warning comes from the mixedModel2Fit() function in the statmod
package, which is called by duplicateCorrelation() for individual
genes. This warning would suggest that you have a singular fit for
that gene. Any warning which occurs only a handful of times can be
ignored. However you might double check your data.
Best wishes
Gordon
>Date: Thu, 1 Nov 2007 11:15:44 +0100 (CET)
>From: dorthe.belgardt at medisin.uio.no
>Subject: [BioC] warning message for duplicateCorrelation
>To: bioconductor at stat.math.ethz.ch
>
>Hi,
>
>when using the dulicateCorrelation function I get the following
warning
>message: "NaNs produced in: sqrt(dfitted.values)"
>I have used the function before and usually got the "too much
damping"
>warning message, which I know can be ignored. But now I get the
warning
>message metioned above and don't know whether to ignore it or not.
>
>Thanks for any help in advance,
>Dorthe
>
>--
>Dorthe Belgardt
>Institute of Basic Medical Sciences
>Department of Physiology
>P.O. Box 1103 Blindern
>0317 Oslo
>Norway