Pls, keep conversation on list, you can get answer from others, more capable 
than myself in survey analysis. As I said I am not an expert in this task but 
you seem to seek some statistical help. For this maybe stackexchange can be 
more appropriate.

If you want some help here, you should present some data (not necessarily 
real), some R code and what did you expect and did not get.

I went through help for survey and plm but did not find any mention that those 
two packages are somehow related. In some survey functions you can use weight 
argument but I did not find any note that these functions could result in 
object suitable for plm


From: laura roncaglia [mailto:roncaglia.la...@gmail.com]
Sent: Friday, September 16, 2016 9:36 AM
To: PIKAL Petr <petr.pi...@precheza.cz>
Subject: Re: [R] apply weight to a data frame

Thank you for your answer.

The data frame contains social and economic variables (like sex, education 
level, age, income, wealth and so on); since the survey is conduct on a number 
of family smaller than the national one, I should use survey weights to make 
the survey's data more representative (the survey data could be influenced by 
the family choosen, using the survey weights the data should be adjusted).

Now I am trying  to get a weighted data frame using the survey package (to 
replicate weights) ; in this way I hope I will be able to use the plm package 
without problems.

Do you think it could be right?

2016-09-16 9:21 GMT+02:00 PIKAL Petr 

I do not know much about plm but your request seems to me pretty cryptic, 
probably even for knowledgeable person.

There is no weight argument in plm call so I wonder how do you want to "weight 
data frame".

The only weighting scheme for data frame I can imagine is to repeat rows 
somehow according to weight value, but I do not consider it proper way.

You should probably explain what do you mean by data frame weighing to get 
relevant answer.
But I may be completely out of understanding your problem.


> -----Original Message-----
> From: R-help 
> [mailto:r-help-boun...@r-project.org<mailto:r-help-boun...@r-project.org>] On 
> Behalf Of laura
> roncaglia
> Sent: Thursday, September 15, 2016 6:40 PM
> To: r-help@r-project.org<mailto:r-help@r-project.org>
> Subject: [R] apply weight to a data frame
> I am a beginner user of R.
> I am writing the master thesis using a data frame from a national survey.
> The data frame contains several variables, one of which contains the survey
> weights.
> I need to apply the survey weights to the data frame, in order to use the data
> frame with the plm package (I need to run a fixed effect analysis).
> I know that I could use packages different from plm, but I am more
> interested in weighting the data frame.
> Thank you in advance.
>       [[alternative HTML version deleted]]
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