[R] Stepwise rQTL-unknown warning message and odd QTL curve

[Uwe Ligges]

On 23.05.2015 01:07, Claire O'Quin wrote:
> Hi There,
>
> I am running a stepwise QTL for a backcross and got the following warning
> message:
>
> Warning message:
> In lastout[[i]] - (max(lastout[[i]]) - dropresult[rn == qn[i], 3]) :
>    longer object length is not a multiple of shorter object length

So dimensions of the arguments may not match?
>
> I can not discern what this means. When I created my plot, the QTL curve on
> chromosome 3 is very odd (tried attaching it), so I suspect that the
> warning is connected to that odd curve plot.
>
> I tried running the fitqtl just to see what would happen and got an error
> (Error in solve.default(t(Z) %*% Z, t(Z) %*% X) : system is computationally
> singular: reciprocal condition number = 1.49755e-24).
>
> Any thoughts about what is going on?

No, without knoing what the arguments and the actual code was.

Best,
Uwe Ligges

>
> Thank you,
> Claire
>
>
>
> -----------------------------------
> Claire O'Quin, PhD
> Postdoctoral Research Scholar
> University of Kentucky
> http://www.linnenlab.com/home.html
>
>
>
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