[R] Error in if (any(ch)) { : missing value where TRUE/FALSE needed

[Uwe Ligges]

On 03.10.2012 19:47, liang.che at us.pwc.com wrote:
> Can someone please help with the error message below?

Not really, the message says it all: You cannot improve the AIC since it 
is numerically -Inf already!

Uwe Ligges




>
> thanks!
>
>
>
> Start:  AIC=-Inf
> value ~ 1 + Core_CPI__ + GDP_change + Unemployment + housing +
>      interest + S_P + d1 + d2 + d3
>
> Error in if (any(ch)) { : missing value where TRUE/FALSE needed
> In addition: Warning message:
> attempting model selection on an essentially perfect fit is nonsense
>
>
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