[R] predict.lm with NAs

[Wincent]

see ?na.exclude

you can set na.action='na.exclude' when fit the model.


On 15 April 2010 09:06, Martin Batholdy <batholdy at googlemail.com> wrote:
> Hi,
>
> I wanted to use the predict.lm() function to compare the empirical data with the predicted values.
> The problem is that I have NAs in my data.
>
> I wanted to cbind my data.frame with the empirical values with the vector I get from predict.lm.
> But they don't have the same length because predict.lm just skip NA-predictions.
>
> Is there a way to get a vector with predicted values of the same length as the empirical values (with NAs)?
>
>
> thanks!
>
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-- 
Wincent Rong-gui HUANG
Doctoral Candidate
Dept of Public and Social Administration
City University of Hong Kong
http://asrr.r-forge.r-project.org/rghuang.html