# Extract class of variable
.mapVarClass <- function(.cl){
if( "integer" %in% .cl ){ return("numeric") }
if( "numeric" %in% .cl ){ return("numeric") }
if( "logical" %in% .cl ){ return("logical") }
if( "factor" %in% .cl || "character" %in% .cl ){ return("factor") }
return(.cl) # Not covered by mgcViz
}
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