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Re: How to Weight Data in R [message #771 is a reply to message #706]

Sat, 14 September 2013 11:44

Trevor-DHS
Messages: 808
Registered: January 2013

Senior Member

Hi Onetwo,

The warnings you are getting are because R converts categorical variables with labels into factors, but some variables have the same label for more than one category. R appears to convert these into a single level in the factor it creates. Some of these cases are because there are blank labels defined, and so all categories get converted into a single level in the factor.

You can avoid this by not converting categorical variables into factors. You can do this by using:

mydata <- read.dta("c:/Births/CDBR50DT/CDBR50FL.dta", convert.factors=FALSE)

and then convert any variables that you want to use into factors when you need them. This will avoid the warning messages that are produced in the conversion process.

Cheers. Trevor

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[Message index]

		How to Weight Data in R By: Jewel on Thu, 21 March 2013 16:17
		Re: How to Weight Data in R By: Bridgette-DHS on Mon, 25 March 2013 10:52
		Re: How to Weight Data in R By: onetwo on Thu, 22 August 2013 16:13
		Re: How to Weight Data in R By: Trevor-DHS on Sat, 14 September 2013 11:44
		Re: How to Weight Data in R By: Trevor-DHS on Sat, 14 September 2013 11:02
		Re: How to Weight Data in R By: dhswes on Wed, 28 June 2017 17:54
		Re: How to Weight Data in R By: Trevor-DHS on Tue, 11 July 2017 18:52
		Re: How to Weight Data in R By: dhswes on Wed, 20 September 2017 18:51
		Re: How to Weight Data in R By: correaem on Sat, 15 December 2018 18:29
		Re: How to Weight Data in R By: Trevor-DHS on Sun, 16 December 2018 13:43
		Re: How to Weight Data in R By: correaem on Sun, 16 December 2018 15:18
		Re: How to Weight Data in R By: Trevor-DHS on Sun, 16 December 2018 23:34
		Re: How to Weight Data in R By: correaem on Fri, 28 December 2018 14:10
		Re: How to Weight Data in R By: Sajhama on Sat, 01 August 2020 06:39
		Re: How to Weight Data in R By: Bridgette-DHS on Tue, 04 August 2020 15:39
		Re: How to Weight Data in R By: jordan on Tue, 19 March 2019 10:20
		Re: How to Weight Data in R By: Trevor-DHS on Tue, 19 March 2019 10:52
		Re: How to Weight Data in R By: Wahyu dh on Sun, 17 May 2020 01:06
		Re: How to Weight Data in R By: Trevor-DHS on Sun, 17 May 2020 12:38
		Re: How to Weight Data in R By: Wahyu dh on Mon, 18 May 2020 02:06

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