Lihtsaim viis selleks on kasutada "rowSelection" argument. Siin on lühike näide, mis kasutab seda RevoScaleR proovi andmekomplekti 'CensusWorkers.xdf':
inFile <- file.path(rxGetOption("sampleDataDir"), "CensusWorkers") rxCube(incwage ~ sex : state, data = inFile, rowSelection = age >=30 & age <=50 & wkswork1 > 40, means=TRUE)