[R] attributes in dplyr and haven

[Conklin, Mike (GfK)]

I read in spss files using haven's read_spss. Each column then gets attributes assigned named
label - a long description of the variable
class -" labelled"
labels --- answer labels i.e. 1=Male, 2=Female
 example -
> attributes(KPTV[[3]])
$label
[1] "DERIVED: Survey language"

$class
[1] "labelled"

$labels
English Spanish 
      1       2 

However, if I subset the data.frame  e.g. MassTV<-KPTV[row selection logic,] the label attribute disappears

attributes(MassTV[[3]])
$labels
English Spanish 
      1       2 

$class
[1] "labelled"

If I use dplyr to filter the data I simply get an ERROR that the label attribute is not supported.

> MassTV<-filter(KPTV,KPTV$MNO %in% KPMass$`KPMain$mno`)
Error: column 'MNO' of type numeric has unsupported attributes: label

Any ideas on how I can preserve the label attribute (i.e. the long description of the variable name?)

Thanks for any help,

Mike

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W. Michael Conklin
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