NlsyLinks (version 1.003)

ValidatePairLinksAreSymmetric: Verifies that the pair relationships are symmetric.

Description

For certain analyses, the pairs links (which can be considered a type of sparse matrix) need to be symmetric. For instance, if there is a row for Subjects 201 and 202 with R=0.5, there should be a second row for Subjects 202 and 201 with R=0.5. This validation function is useful to some types of DF methods and some spatially-inspired methods.

Usage

ValidatePairLinksAreSymmetric(linksPair)

Arguments

linksPair

The data.frame object that should be symmetric

Value

• Returns TRUE if symmetric. Throw an error with stop if asymmetric.

See Also

CreatePairLinksDoubleEntered

Examples

dsSingleLinks <- data.frame(
  ExtendedID=c(1, 1, 1, 2), 
  Subject1Tag=c(101, 101, 102, 201), 
  Subject2Tag=c(102, 103, 103, 202), 
  R=c(.5, .25, .25, .5), 
  RelationshipPath=rep("Gen2Siblings", 4)
)
dsSingleOutcomes <- data.frame(
  SubjectTag=c(101, 102, 103, 201, 202), 
  DV1=c(11, 12, 13, 41, 42), 
  DV2=c(21, 22, 23, 51, 52))
dsDouble <- CreatePairLinksDoubleEntered(
  outcomeDataset=dsSingleOutcomes, 
  linksPairDataset=dsSingleLinks, 
  outcomeNames=c("DV1", "DV2"), 
  validateOutcomeDataset=TRUE)
dsDouble #Show the 8 rows in the double-entered pair links
summary(dsDouble) #Summarize the variables

ValidatePairLinksAreSymmetric(dsDouble) #Should return TRUE.