[R] replacement has *** rows, data has ***

[David Winsemius]

> On Jun 12, 2017, at 1:32 PM, Manqing Liu <hopkins0727 at gmail.com> wrote:
> 
> Hi all,
> 
> I created a predicted variable based on a model, but somehow not all
> observations have a predicted value. When I tired to add the predicated
> value to the main data set (data$pr <- pr) , it said:
> replacement has 34333 rows, data has 34347.
> Do you know how to solve that?
> 
> Thanks,
> Manqing
> 
> 	[[alternative HTML version deleted]]

First, you should read the Posting Guide. Then you should read the help page for ?predict. 

Only then should  you write a follow-up email (in plain text) with code that constructs a simple example using whatever method was used to construct this `pr` variable and  provide enough information to support a sensible answer.
> 
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> and provide commented, minimal, self-contained, reproducible code.

David Winsemius
Alameda, CA, USA