[R] NA with lmList

[Phil Spector]

Please take a look at the documentation for lmList regarding
the na.action= argument.  It should be a *function*, not TRUE
or FALSE.  For example, try

lmList(score ~ childid | spring, data=a, na.action=na.omit)

 					- Phil Spector
 					 Statistical Computing Facility
 					 Department of Statistics
 					 UC Berkeley
 					 spector at stat.berkeley.edu


On Wed, 13 Oct 2010, FMH wrote:

> Dear All,
>  
> I was trying to use the lmList function to get the lmList graphic but  have a
> problem creating the graphic.  My data has missing values and an error occurred 
> as stated below.
>
>
>
> ###################################################
>
> library(nlme)
>
>> a
>   schoolid spring score childid
> 1 1 0 550 345
> 2 1 1 568 345
> 3 1 0 560 456
> 4 1 1 NA 456
> 5 2 0 540 32
> 6 2 1 562 32
> 7 2 0 579 34
> 8 2 1 599 34
>
>
> (lmlis1 <- lmList(score ~ childid | spring, data=a, na.action=T))
>
> Error in UseMethod("getGroups") : no applicable method for "getGroups"
>
> #######################################################
>
>
> Could anybody advice me the way to write the command correctly, which ignore the
> missing data?
>
> Cheers
> Fir
>
>
>
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