text_combined: chuck cleland cclelandoptonlinenet 872008 701 glaporta wrote hi folk tried works perfectly tapplyiris1iris5mean obtain single table multiple variables tapply x atomic object code doesnt work tapplyiris14iris5mean thanx great summer holidays gianandrea one way applyiris14 2 functionxtapplyx listiris5 mean sepallength sepalwidth petallength petalwidth setosa 5006 3428 1462 0246 versicolor 5936 2770 4260 1326 virginica 6588 2974 5552 2026 another libraryreshape irismelt meltiris measurevarnamesiris14 castirismelt variable species mean variable species 1 sepallength setosa 5006 2 sepallength versicolor 5936 3 sepallength virginica 6588 4 sepalwidth setosa 3428 5 sepalwidth versicolor 2770 6 sepalwidth virginica 2974 7 petallength setosa 1462 8 petallength versicolor 4260 9 petallength virginica 5552 10 petalwidth setosa 0246 11 petalwidth versicolor 1326 12 petalwidth virginica 2026 chuck cleland phd ndri inc wwwndriorg 71 west 23rd street 8th floor new york ny 10010 tel 212 8454495 tu th tel 732 5120171 w f fax 917 4380894 ______________________________________________ rhelprprojectorg mailing list httpsstatethzchmailmanlistinforhelp please read posting guide httpwwwrprojectorgpostingguidehtml provide commented minimal selfcontained reproducible code thu 07 aug 2008 080154 0400 r multiple tapply